Which metal is less reactive than copper? [mr-1]

Which metal is more reactive than magnesium? [mr-2]

Which metal is more reactive than hydrogen but less reactive than carbon? [mr-3]

Which metal is less reactive than sodium but cannot be extracted using carbon? [mr-4]

Which is formed when a metal reacts with cold water? [mr-5]

Which is a compound formed when a metal reacts with an acid? [mr-6]

Which is formed when a metal reacts with either water or an acid? [mr-7]

Which is formed when a heated metal reacts with steam? [mr-8]

Information is given below on the reactivity of four metals Wa, Xb, Yc and Zd (NOT their real chemical symbols) ...
Metal Wa does not readily react with dilute acid
Metals Xb and Yc react slowly with acid
Metal Zd will displace Yc from the sulfate salt solution of Yc, YcSO_4(aq).
Metal Zd will NOT displace Xb from the chloride salt solution of Xb, XbCl_2(aq).
If their reactivity order is from the most reactive (1) (2) (3) (4) to the least reactive ...
which metal corresponds to (1), the most reactive of the four metals? [mr-9]

Information is given below on the reactivity of four metals Wa, Xb, Yc and Zd (NOT their real chemical symbols) ...
Metal Wa does not readily react with dilute acid
Metals Xb and Yc react slowly with acid
Metal Zd will displace Yc from the sulfate salt solution of Yc, YcSO_4(aq).
Metal Zd will NOT displace Xb from the chloride salt solution of Xb, XbCl_2(aq).
If their reactivity order is from the most reactive (1) (2) (3) (4) to the least reactive ...
which metal corresponds to (2), the 2nd most reactive of the four metals? [mr-10]

Information is given below on the reactivity of four metals Wa, Xb, Yc and Zd (NOT their real chemical symbols) ...
Metal Wa does not readily react with dilute acid
Metals Xb and Yc react slowly with acid
Metal Zd will displace Yc from the sulfate salt solution of Yc, YcSO_4(aq).
Metal Zd will NOT displace Xb from the chloride salt solution of Xb, XbCl_2(aq).
If their reactivity order is from the most reactive (1) (2) (3) (4) to the least reactive ...
which metal corresponds to (3), the 3rd most reactive of the four metals? [mr-11]

Information is given below on the reactivity of four metals Wa, Xb, Yc and Zd (NOT their real chemical symbols) ...
Metal Wa does not readily react with dilute acid
Metals Xb and Yc react slowly with acid
Metal Zd will displace Yc from the sulfate salt solution of Yc, YcSO_4(aq).
Metal Zd will NOT displace Xb from the chloride salt solution of Xb, XbCl_2(aq).
If their reactivity order is from the most reactive (1) (2) (3) (4) to the least reactive ...
which metal corresponds to (4), the least reactive of the four metals? [mr-12]

From the four elements listed, which is a metal which is most likely to be found in the ground as the metal itself? [mr-13]

From the four elements listed, which is a non-metal with no metallic character at all? [mr-14]

From the four elements listed, which is a metal that displaces hydrogen from acids but not from cold water? [mr-15]

From the four elements listed, which is a metal that cannot be extracted by displacement with carbon? [mr-16]

Which is formed by the reaction of heated magnesium with steam? [mr-17]

Which is formed by the reaction of magnesium with cold water? [mr-18]

Which is formed by the reaction of magnesium with hydrochloric acid? [mr-19]

Which is formed by the reaction of magnesium with sulfuric acid? [mr-20]

Which of A to D is less reactive than copper? [mr-21]

Which is more reactive than magnesium? [mr-22]

Which is more reactive than hydrogen but less reactive than carbon? [mr-23]

Which is less reactive than sodium but cannot be extracted from its ore using carbon? [mr-24]

Which is found in rocks as the metal itself? [mr-25]

Which is a non-metal with a little metallic character? [mr-26]

Which is a metal that displaces hydrogen from dilute acids but not from cold water? [mr-27]

Which cannot be extracted from its ore with carbon? [mr-28]

Which of these in contact with iron will cause rusting? [mr-29]

A steel pier in the sea rusts. The rust consists of? [mr-30]

Which of these metals can be used in the 'sacrificial corrosion' method for protecting steel structures from rusting? [mr-31]

Which of these metals can be used in the 'sacrificial corrosion' method for protecting steel structures from rusting? [mr-32]

Which of these reactions is possible? [mr-33]

Which of these reactions is possible? [mr-34]

Which of these reactions is possible? [mr-35]

Which of these reactions is possible? [mr-36]

Which of these reactions is possible? [mr-37]

Which of these reactions is possible? [mr-38]

Which of these reactions is possible? [mr-39]

Which of these reactions is possible? [mr-40]

Rust readily forms if an iron object is surrounded by? [mr-45]

Which of the following cannot be predicted about metal X, given its position in the reactivity series of metals? [mr-46]

Which will displace iron from iron oxide? [mr-47]

Road tankers carrying acid use steel tanks lined with glass. The glass is used because? [mr-48]

Corrosion occurs when a metal is attacked by? [mr-49]

When scrap iron is added to blue copper sulfate solution, a pinky-brown deposit is formed and a pale green solution is left above it. The pinky-brown deposit is? [mr-50]

When scrap iron is added to blue copper sulfate solution, a pinky-brown deposit is formed and a pale green solution is left above it. The pale green solution is of? [mr-51]

When iron becomes coated in rust, the chemical process is an example of? [mr-52]

The effect of connecting other metals to an iron nail was investigated. From the observations you can deduce? [mr-57]

The effect of connecting other metals to an iron nail was investigated. From the observations you can deduce? [mr-58]

The effect of connecting other metals to an iron nail was investigated. From the observations you can deduce? [mr-59]

The effect of connecting other metals to an iron nail was investigated. From the observations you can deduce? [mr-60]

The steel hulls of ships can be protected from rusting by bolting on blocks of? [mr-61]

Steel pipes underground can be protected from rusting by attaching blocks of? [mr-62]

Aluminium window frames do not corrode away because the aluminium is? [mr-63]

Rust protection from galvanising steel car bodies is done by coating the metal in? [mr-64]

The rusting of iron is described as an oxidation because the iron atoms? [mr-65]

Which reacts with water to form hydrogen? [mr-66]

Copper can be used for roofing domes on buildings because it? [mr-67]

Salt water speeds up the corrosion of metals because it contains ions from salts like sodium chloride. Aluminium can be used for the upper structures of ships because the aluminium? [mr-68]

In which reaction is a metal oxidised? [mr-69]

In which reaction is a solid non-metal oxidised? [mr-70]

In which reaction is a gaseous non-metal oxidised? [mr-71]

In which reaction is a metal oxide reduced? [mr-72]

Four chemical changes are shown below as part, or full, word equations. Which can be described as an oxidation only? [mr-73]

Four chemical changes are shown below as part, or full, word equations. Which can be described as a reduction only? [mr-74]

Four chemical changes are shown below as part, or full, word equations. Which can be described as an oxidation and reduction (redox)? [mr-75]

Four chemical changes are shown below as part, or full, word equations. Which can be described as an oxidation and reduction (redox)? [mr-76]

Given the following four observations of the reactions of four metals ...
(1) Metals F and G slowly react with water
(2) Metal H will displace metal G form its chloride salt solution
(3) Metal E will not react with dilute acids
(4) Metal H will NOT displace metal F from its sulfate salt solution
What is their reactivity order, from the most to the least reactive? [mr-86]

Given the following five observations of the reactions of four metals with hydrogen (H), carbon (C) and other metal oxides ...
(1) Metal Y can displace metal Z from its oxide
(2) Carbon can displace metal W and metal X from their oxides
(3) Hydrogen will displace metal W from its oxide
(4) Hydrogen will NOT displace metal X from its oxide
(5) Carbon will NOT displace metals Y and Z from their oxides
What is their reactivity order, from the most to the least reactive? [mr-87]

Underground pipes made of steel (alloy of iron) can be protected from rusting if you attach metal blocks made of a? [mr-88]

Stainless steel is made by alloying iron, nickel and ? [mr-89]

Roofs of buildings made of copper weather to give a compound ? in colour. [mr-90]

Roofs of buildings made of iron weather to give a compound ? in colour. [mr-91]

When copper is heated in air, the oxide compound formed is ? in colour. [mr-92]

When magnesium burns in air, the oxide compound formed is ? in colour. [mr-93]

Given the following three observations of the reactions of four metals ...
(1) Metal O will displace metal N from its chloride
(2) Only metal L reacts with cold water
(3) Metal N reacts faster with acid than metal M
What is their reactivity order, from the most to the least reactive? [mr-94]

Given the following ionic redox equation for the displacement of copper from copper(II) sulfate using zinc metal ...
Zn_(s) + Cu²⁺_(aq) ==> Zn²⁺_(aq) + Cu_(s)
In the reaction which is oxidised? [mr-41]

Given the following ionic redox equation for the displacement of copper from copper(II) sulfate using zinc metal ...
Zn_(s) + Cu²⁺_(aq) ==> Zn²⁺_(aq) + Cu_(s)
In the reaction which is reduced? [mr-42]

Given the following ionic redox equation for the displacement of copper from copper(II) sulfate using zinc metal ...
Zn_(s) + Cu²⁺_(aq) ==> Zn²⁺_(aq) + Cu_(s)
In the reaction which is formed by an electron loss or oxidation process? [mr-43]

Given the following ionic redox equation for the displacement of copper from copper(II) sulfate using zinc metal ...
Zn_(s) + Cu²⁺_(aq) ==> Zn²⁺_(aq) + Cu_(s)
In the reaction which is formed by an electron gain or reduction process? [mr-44]

A simple battery cell can be made by connecting two metal strips dipped into a conducting solution of ions to form a complete circuit. The copper-zinc cell gives a voltage of 1.10 V. What voltage would be produced by a magnesium-iron cell? [mr-53]

A simple battery cell can be made by connecting two metal strips dipped into a conducting solution of ions to form a complete circuit. The copper-zinc cell gives a voltage of 1.10 V. What voltage would be produced by a zinc-silver cell? [mr-54]

A simple battery cell can be made by connecting two metal strips dipped into a conducting solution of ions to form a complete circuit. The copper-zinc cell gives a voltage of 1.10 V. Which combination of metals will give a voltage of 0.79 V? [mr-55]

A simple battery cell can be made by connecting two metal strips dipped into a conducting solution of ions to form a complete circuit. The copper-zinc cell gives a voltage of 1.10 V. Which combination of metals will give a voltage of 0.95 V? [mr-56]

Given the following equation: Mg_(s) + ? ==> MgCl_2(aq) + H_2(g)
Which of A-D is missing ? [mr-77]

Given the following equation: Ca_(s) + 2H₂O_(l) ==> ? + H_2(g)
Which of A-D missing ? [mr-78]

Given the following equation: Zn_(s) + H₂SO_4(aq) ==> ? + H_2(g)
Which of A-D is missing ? [mr-79]

Given the following equation: Mg_(s) + ? ==> MgO_(s) H_2(g)
Which of A-D is missing ? [mr-80]

Given the following equation: Zn_(s) + ? ==> ZnSO_4(aq) + Fe_(s)
Which of A-D is missing ? [mr-81]

Given the following equation: ? + 3Zn_(s) ==> 2Fe_(s) + 3ZnSO_4(aq)
Which of A-D is missing ? [mr-82]

Given the following equation: 2Al_(s) + 3CuO_(s) ==> ? + 3Cu_(s)
Which of A-D is missing ? [mr-83]

Given the following equation: 2K_(s) + 2H₂O_(l) ==> ? + H_2(g)
Which of A-D is missing ? [mr-84]

The rusting of iron is described as an oxidation because the iron atoms? [mr-85]

Which of the following is a definition of oxidation? [mr-95]

Which of the following is a definition of reduction? [mr-96]

Which of the following is a definition of reduction? [mr-97]

Galvanising, means 'coating with zinc', and is used to protect iron and steel objects from corrosion. The object can be dipped in a bath of molten zinc! but it is now mainly done by electrolysis. At the positive electrode? [mr-98]

Galvanising, means 'coating with zinc', and is used to protect iron and steel objects from corrosion. The object can be dipped in a bath of molten zinc! but it is now mainly done by electrolysis. At the negative electrode? [mr-99]

Galvanising, means 'coating with zinc', and is used to protect iron and steel objects from corrosion. The object can be dipped in a bath of molten zinc! but it is now mainly done by electrolysis. The process at the positive electrode is described as a ...?... reaction. [mr-100]

Galvanising, means 'coating with zinc', and is used to protect iron and steel objects from corrosion. The object can be dipped in a bath of molten zinc! but it is now mainly done by electrolysis. The process at the negative electrode is described as ...?... reaction. [mr-101]

Galvanising, means 'coating with zinc', and is used to protect iron and steel objects from corrosion. The object can be dipped in a bath of molten zinc! but it is now mainly done by electrolysis. The overall process is described as ...?... reaction. [mr-102]

Galvanising means coating an iron (Fe) or steel object with a layer of zinc (Zn) to protect it from corrosion. Steel cans can also be coated with tin (Sn), also to protect it from corrosion, including fruit juices in 'tin' cans. When the zinc coating is scratched through to the iron underneath, the iron still does not corrode initially. However, if the tin surface is scratched through to the iron, the iron corrodes even faster compared to when there was no coating at. This means? [mr-103]

Galvanising means coating an iron (Fe) or steel object with a layer of zinc (Zn) to protect it from corrosion. Steel cans can also be coated with tin (Sn), also to protect it from corrosion, including fruit juices in 'tin' cans. When the zinc coating is scratched through to the iron underneath, the iron still does not corrode initially. However, if the tin surface is scratched through to the iron, the iron corrodes even faster compared to when there was no coating at. This means? [mr-104]

Galvanising means coating an iron (Fe) or steel object with a layer of zinc (Zn) to protect it from corrosion. Steel cans can also be coated with tin (Sn), also to protect it from corrosion, including fruit juices in 'tin' cans. When the zinc coating is scratched through to the iron underneath, the iron still does not corrode initially. However, if the tin surface is scratched through to the iron, the iron corrodes even faster compared to when there was no coating at. This means? [mr-105]

Galvanising means coating an iron (Fe) or steel object with a layer of zinc (Zn) to protect it from corrosion. Steel cans can also be coated with tin (Sn), also to protect it from corrosion, including fruit juices in 'tin' cans. When the zinc coating is scratched through to the iron underneath, the iron still does not corrode initially. However, if the tin surface is scratched through to the iron, the iron corrodes even faster compared to when there was no coating at. This means? [mr-106]

Galvanising means coating an iron (Fe) or steel object with a layer of zinc (Zn) to protect it from corrosion. Steel cans can also be coated with tin (Sn), also to protect it from corrosion, including fruit juices in 'tin' cans. When the zinc coating is scratched through to the iron underneath, the iron still does not corrode initially. However, if the tin surface is scratched through to the iron, the iron corrodes even faster compared to when there was no coating at. This means? [mr-107]

A simple battery cell can be made by connecting two metal strips dipped into a conducting solution of ions to form a complete circuit. Some of the first 'batteries' were made from dipping strips of zinc and copper into their salt solutions, but even a solution of acid works too. The electrode potential (V) is a measure of how easily a metal loses electrons. The more negative the potential the more easily the metal atoms lose electrons. The potential difference of the cell (p.d. in Volts) is the difference between the two electrode potentials of the two metals (shown in the table compared to hydrogen). What voltage does this cell produce if copper and zinc electrodes are used? [mr-108]

A simple battery cell can be made by connecting two metal strips dipped into a conducting solution of ions to form a complete circuit. Some of the first 'batteries' were made from dipping strips of zinc and copper into their salt solutions, but even a solution of acid works too. The electrode potential (V) is a measure of how easily a metal loses electrons. The more negative the potential the more easily the metal atoms lose electrons. The potential difference of the cell (p.d. in Volts) is the difference between the two electrode potentials of the two metals (shown in the table compared to hydrogen). Which two metals will give a cell voltage of 1.25V? [mr-109]

A simple battery cell can be made by connecting two metal strips dipped into a conducting solution of ions to form a complete circuit. Some of the first 'batteries' were made from dipping strips of zinc and copper into their salt solutions, but even a solution of acid works too. The electrode potential (V) is a measure of how easily a metal loses electrons. The more negative the potential the more easily the metal atoms lose electrons. The potential difference of the cell (p.d. in Volts) is the difference between the two electrode potentials of the two metals (shown in the table compared to hydrogen). Which two metals will give a cell voltage of 0.65V? [mr-110]

A simple battery cell can be made by connecting two metal strips dipped into a conducting solution of ions to form a complete circuit. Some of the first 'batteries' were made from dipping strips of zinc and copper into their salt solutions, but even a solution of acid works too. The electrode potential (V) is a measure of how easily a metal loses electrons. The more negative the potential the more easily the metal atoms lose electrons. The potential difference of the cell (p.d. in Volts) is the difference between the two electrode potentials of the two metals (shown in the table compared to hydrogen). Which statement is TRUE if copper and zinc metal electrodes are used? [mr-111]

A simple battery cell can be made by connecting two metal strips dipped into a conducting solution of ions to form a complete circuit. Some of the first 'batteries' were made from dipping strips of zinc and copper into their salt solutions, but even a solution of acid works too. The electrode potential (V) is a measure of how easily a metal loses electrons. The more negative the potential the more easily the metal atoms lose electrons. The potential difference of the cell (p.d. in Volts) is the difference between the two electrode potentials of the two metals (shown in the table compared to hydrogen). Which statement is TRUE if copper and zinc metal electrodes are used? [mr-112]

The diagram shows the results of some sacrificial rust protection experiments. When silver is connected to iron, electrons transfer from iron to silver. This causes? [mr-113]

The diagram shows the results of some sacrificial rust protection experiments. When zinc is connected to iron, electrons transfer from zinc to iron. This causes? [mr-114]

If an iron sheet is dipped into a silver nitrate solution it becomes coated in grey layer of silver. The overall reaction is an example of? [mr-115]

If an iron sheet is dipped into a copper sulfate solution it becomes coated in pink-brown deposit of copper. This formation of the copper is an example of? [mr-116]

The reaction illustrated produces ...? [ab-1]

The type of reaction illustrated is called ...? [ab-2]

To produce sodium sulfate by the reaction illustrated you need ...? [ab-3]

In the reaction illustrated, in order to add the correct amount of acid you would add a few drops of Universal Indicator and add acid until the indicator in the conical flask was ...? [ab-4]

In the reaction illustrated, in order to add the correct amount of acid you would add a few drops of Universal Indicator to the conical flask. If too little acid was added the indicator colour could be? [ab-5]

In the reaction illustrated, in order to add the correct amount of acid you would add a few drops of Universal Indicator to the conical flask. If too much acid was added the indicator colour could be? [ab-6]

To produce potassium chloride by the reaction illustrated you need ...? [ab-7]

To produce lithium nitrate by the reaction illustrated you need ...? [ab-8]

The diagram shows a method of preparing salts.
Which of the following will forms when a transition metal oxide reacts with hydrochloric acid? [ab-9]

The diagram shows a method of preparing salts from reacting an insoluble metal oxide and an acid.
This type of reaction is called? [ab-10]

The diagram shows a method of preparing salts by reacting an insoluble metal oxide with an acid.
How can you tell when all the acid has been used up before filtering the mixture? [ab-11]

The diagram shows a method of preparing salts.
Which of the following will form a transition metal sulfate and hydrogen? [ab-12]

Which is the strongest base or alkali? [ab-13]

Which is the weakest base or alkali? [ab-14]

Which is the strongest acid? [ab-15]

Which is the weakest acid? [ab-16]

Which of the following can be mixed to form a neutral solution? [ab-17]

Which of the following can be mixed to form a neutral solution? [ab-18]

Which of the following can be safely used to treat an acid bee sting? [ab-19]

Which of the following can be safely used to treat an alkaline wasp sting? [ab-20]

Which of the following is most likely to be part of an ant-acid indigestion medicine? [ab-21]

Which of the following is the safest to use to treat an acid nettle sting? [ab-22]

A small amount of a dense white powder was mixed with water in a test tube. Non of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned blue. This meant the white powder was ...? [ab-23]

A small amount of a dense white powder was mixed with water in a test tube. Some of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned blue. This meant the white powder was ...? [ab-24]

A small amount of a dense white powder was mixed with water in a test tube. Non of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned green. This meant the white powder was ...? [ab-25]

A small amount of a dense white powder was mixed with water in a test tube. Some of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned green. This meant the white powder was ...? [ab-26]

A small amount of a dense white powder was mixed with water in a test tube. Non of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned orange. This meant the white powder was ...? [ab-26]

A small amount of a dense white powder was mixed with water in a test tube. Some of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned red. This meant the white powder was ...? [ab-26]

Which of the following is the pH of a strong acid? [ab-49]

Which of the following is the pH of a strong alkali? [ab-50]

Which of the following is the pH of a weak acid? [ab-51]

Which of the following is the pH of a weak alkali? [ab-52]

When dilute nitric acid reacts with sodium hydroxide the products are? [ab-53]

dilute acid X + copper(II) carbonate ==> copper(II) sulfate + water + carbon dioxide. Acid X is? [ab-54]

dilute acid X + magnesium hydroxide ==> magnesium chloride + water. Acid X is? [ab-55]

magnesium + dilute acid X ==> magnesium nitrate + hydrogen. Acid X is? [ab-56]

When hydrochloric acid is added to copper carbonate, the gas bubbles formed can be identified by? [ab-57]

When sulfuric acid is added to zinc, the gas bubbles formed can be identified by? [ab-58]

An iron tray was cleaned with dilute hydrochloric acid and bubbles formed. The gas formed was? [ab-59]

A carbonate mineral rock was tested with dilute sulfuric acid and bubbles formed. The gas formed was? [ab-60]

Dilute sulfuric acid will only form one product when reacted with? [ab-61]

Dilute sulfuric acid will not readily react with? [ab-62]

Which will form a salt and water when reacted with dilute hydrochloric acid? [ab-63]

Which will form a salt, water and carbon dioxide when reacted with dilute hydrochloric acid? [ab-64]

Which of these reactants is the best combination to use to make magnesium sulfate? [ab-65]

Which of these reactants is the best combination to use to make zinc nitrate? [ab-66]

Which of these reactants is the best combination to use to make copper(II) sulfate? [ab-67]

Which of these reactants is the best combination to use to make zinc chloride? [ab-68]

The diagram shows the preparation of a salt. Which word applies to stages 1-2? [ab-69]

The diagram shows the preparation of a salt. Which word applies to stage 3? [ab-70]

The diagram shows the preparation of a salt. Which word describes the change from 3 to 4? [ab-71]

The diagram shows the preparation of a salt. Which word describes stage 4? [ab-72]

The diagram shows the preparation of a salt using a solid and an acid. Which is true concerning this method? [ab-73]

The diagram shows the preparation of a salt. Which word means a 'soluble base'? [ab-74]

The diagram shows a method of salt preparation. Which statement is true about the method? [ab-75]

The diagram shows one method of salt preparation. Which statement is true about the method illustrated? [ab-76]

Complete the word equation:
zinc oxide + hydrochloric acid ==> ..???.. [ab-77]

Complete the word equation:
zinc hydroxide + hydrochloric acid ==> ..???.. [ab-78]

Complete the word equation:
zinc + hydrochloric acid ==> ..???.. [ab-79]

Complete the word equation:
zinc carbonate + hydrochloric acid ==> ..???.. [ab-80]

Complete the word equation:
nickel + sulfuric acid ==> ..???.. [ab-81]

Complete the word equation:
nickel oxide + sulfuric acid ==> ..???.. [ab-82]

Complete the word equation:
nickel hydroxide + sulfuric acid ==> ..???.. [ab-83]

Complete the word equation:
nickel carbonate + sulfuric acid ==> ..???.. [ab-84]

Complete the word equation:
ammonia + sulfuric acid ==> ..???.. [ab-85]

Complete the word equation:
ammonia + hydrochloric acid ==> ..???.. [ab-86]

Complete the word equation:
ammonia + nitric acid ==> ..???.. [ab-87]

Complete the word equation:
sodium hydroxide + sulfuric acid ===> ..???.. [ab-88]

Given the following neutralisation equation:
NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
Which is the alkali? [ab-89]

Given the following neutralisation equation:
NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
Which is the acid? [ab-90]

Given the following neutralisation equation:
NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
Which is the salt? [ab-91]

Given the following neutralisation equation:
NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
Which is the base? [ab-92]

Which two reactants would you use to make potassium nitrate? [ab-101]

Insoluble metal oxides and metal hydroxides (bases) will not dissolve to form an alkaline solution. But they will dissolve in acids to give the same reaction as with alkalis. This method is particularly handy for making transition metal salts. Which reaction will produce a transition metal chloride and hydrogen? [ab-102]

Insoluble metal oxides and metal hydroxides (bases) will not dissolve to form an alkaline solution. But they will dissolve in acids to give the same reaction as with alkalis. This method is particularly handy for making transition metal salts. When sufficient base has been added so that no more dissolves, how is the excess base removed? [ab-103]

Insoluble metal oxides and metal hydroxides (bases) will not dissolve to form an alkaline solution. But they will dissolve in acids to give the same reaction as with alkalis. This method is particularly handy for making transition metal salts. When sufficient base has been added so that no more dissolves. How could you test that all the acid was neutralised? [ab-104]

Insoluble bases and metals will not dissolve to form an alkaline solution, but they will dissolve in acids to form salts. This method is particularly handy for making transition metal salts. What pair of chemicals will make cobalt sulfate and water? [ab-105]

Insoluble bases and metals will not dissolve to form an alkaline solution, but they will dissolve in acids to form salts. This method is particularly handy for making transition metal salts. What pair of chemicals will make cobalt chloride and hydrogen? [ab-106]

Which two reactants make ammonium chloride and water? [ab-107]

Which of these gives an alkaline solution when dissolved in water? [ab-108]

Which of these gives an alkaline solution when dissolved in water? [ab-109]

Which of these gives an alkaline solution when dissolved in water? [ab-109]

Which of A to D completes the equation ..?.. [ab-111]
..?.. + potassium hydroxide ==> potassium sulfate + water

Which of A to D completes the equation ..?.. [ab-112]
hydrochloric acid + sodium hydroxide ==> ..?.. + water

Which of A to D completes the equation ..?.. [ab-113]
..?.. + nitric acid ==> ammonium nitrate

Which of A to D completes the equation ..?.. [ab-114]
sulfuric acid + ..?.. ==> calcium sulfate + water

Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation)
a Zn_(s) + b HCl_(aq) ==> c ZnCl_2(aq) + d H_2(g) ? [ab-29]

Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation)
a Fe_(s) + b H₂SO_4(aq) ==> c FeSO_4(aq) + d H_2(g) ? [ab-30]

Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation)
a Al_(s) + b HCl_(aq) ==> c AlCl_3(aq) + d H_2(g) ? [ab-31]

Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation)
a Al_(s) + b H₂SO_4(aq) ==> c Al₂(SO₄)_3(aq) + d H_2(g) ? [ab-32]

Which quantities a, b, c, d and e are required to balance the equation ... (note that '1's would not be shown in the equation)
a CaCO_3(s) + b HCl_(aq) ==> c CaCl_2(aq) + d H₂O_(l) + e CO_2(g) ? [ab-33]

Which quantities a, b, c, d and e are required to balance the equation ... (note that '1's would not be shown in the equation)
a Na₂CO_3(s) + b HCl_(aq) ==> c NaCl_(aq) + d H₂O_(l) + e CO_2(g) ? [ab-34]

Which quantities a, b, c, d and e are required to balance the equation ... (note that '1's would not be shown in the equation)
a Tl₂(CO₃)_3(s) + b HCl_(aq) ==> c TlCl_3(aq) + d H₂O_(l) + e CO_2(g) ? [ab-35]

Which quantities a, b, c, d and e are required to balance the equation ... (note that '1's would not be shown in the equation)
a Tl₂(CO₃)_3(s) + b H₂SO_4(aq) ==> c Tl₂(SO₄)_3(aq) + d H₂O_(l) + e CO_2(g) ? [ab-36]

Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation)
a NaOH_(aq) + b HCl_(aq) ==> c NaCl_(aq) + d H₂O_(l) ? [ab-37]

Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation)
a Ca(OH)_2(aq) + b HCl_(aq) ==> c CaCl_2(aq) + d H₂O_(l) ? [ab-38]

Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation)
a Al(OH)_3(s) + b HCl_(aq) ==> c AlCl_3(aq) + d H₂O_(l) ? [ab-39]

Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation)
a Fe₂O_3(s) + b HCl_(aq) ==> c FeCl_3(aq) + d H₂O_(l) ? [ab-40]

Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation)
a MgO_(s) + b HCl_(aq) ==> c MgCl_2(aq) + d H₂O_(l) ? [ab-41]

Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation)
a Mg(OH)_2(s) + b H₂SO_4(aq) ==> c MgSO_4(aq) + d H₂O_(l) ? [ab-42]

Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation)
a Li₂O_(s) + b HCl_(aq) ==> c LiCl_(aq) + d H₂O_(l) ? [ab-43]

Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation)
a KOH_(aq) + b H₂SO_4(aq) ==> c K₂SO_4(aq) + d H₂O_(l) ? [ab-44]

Which ions do acids always produce in water? [ab-45]

Which ions do alkalis always produce in water? [ab-46]

Which is the correct ionic equation for the neutralisation of an acid and an alkali? [ab-47]

When hydrochloric acid is neutralised with sodium hydroxide, which two ions have the highest concentrations in the resulting mixture? [ab-48]

Complete the symbol equation:
NH₃ + HCl ==> ...???... [ab-93]

Complete the symbol equation:
NH₃ + HNO₃ ==> ...???... [ab-94]

Complete the symbol equation:
2NH₃ + H₂SO₄ ==> ...???... [ab-95]

Given the symbol equation:
MgO + 2HCl ==> ???? + H₂O
What is the missing ???? [ab-96]

Given the symbol equation:
Ca(OH)₂ + H₂SO₄ ==> CaSO₄ + ????
What is the missing ???? [ab-97]

Given the symbol equation:
???? + 2HNO₃ ==> Zn(NO₃)₂ + H₂O + CO₂
What is the missing ???? [ab-98]

Given the symbol equation:
Fe + H₂SO₄ ==> FeSO₄ + ????
What is the missing ???? [ab-99]

Given the symbol equation:
Na₂CO₃ + 2HCl ==> ???? + H₂O + CO₂
What is the missing ???? [ab-100]

The equation shows the formation of sodium sulfate when sodium hydroxide neutralises sulfuric acid ....
H2SO4 + 2NaOH ==> Na2SO4 + 2H2O
An acid salt called sodium hydrogensulfate can also be made ...
H2SO4 + NaOH ==> NaHSO4 + H2O
50 cm3 of a sulfuric acid solution was neutralised by 20 cm3 of a sodium hydroxide solution to make sodium sulfate. What volume of sodium hydroxide solution is needed to form sodium hydrogensulfate from the 50cm3 of sulfuric acid? [ab-115]

The equation shows the formation of sodium sulfate when sodium hydroxide neutralises sulfuric acid ....
H2SO4 + 2NaOH ==> Na2SO4 + 2H2O
An acid salt called sodium hydrogensulfate can also be made ...
H2SO4 + NaOH ==> NaHSO4 + H2O
100 cm3 of a sulfuric acid solution was neutralised by 40 cm3 of a sodium hydroxide solution to make sodium sulfate. What volume of sodium hydroxide solution is needed to form sodium hydrogensulfate from the 100cm3 of sulfuric acid? [ab-116]

The equation shows the formation of sodium sulfate when sodium hydroxide neutralises sulfuric acid ....
H2SO4 + 2NaOH ==> Na2SO4 + 2H2O
An acid salt called sodium hydrogensulfate can also be made ...
H2SO4 + NaOH ==> NaHSO4 + H2O
70 cm3 of a sulfuric acid solution was neutralised by 15 cm3 of a sodium hydroxide solution to make sodium hydrogensulfate. What volume of sodium hydroxide solution is needed to form sodium sulfate from the 70cm3 of sulfuric acid? [ab-117]

The equation shows the formation of sodium sulfate when sodium hydroxide neutralises sulfuric acid ....
H2SO4 + 2NaOH ==> Na2SO4 + 2H2O
An acid salt called sodium hydrogensulfate can also be made ...
H2SO4 + NaOH ==> NaHSO4 + H2O
80 cm3 of a sulfuric acid solution was neutralised by 25 cm3 of a sodium hydroxide solution to make sodium hydrogensulfate. What volume of sodium hydroxide solution is needed to form sodium sulfate from the 80cm3 of sulfuric acid? [ab-118]

Method 1 (left)
Method 2 (above)
The diagrams show two ways of making a salt. Method 1 cannot be used for making transition metal salts because transition metal oxides or hydroxides are ..?.. [ab-119]

Which of the following statements about acids and alkalis is TRUE? [ab-120]

Which of the following statements about acids and alkalis is TRUE? [ab-121]

Which of the following statements about acids and alkalis is TRUE? [ab-122]

Which of the following statements about acids and alkalis is TRUE? [ab-123]

What word specifically means 'a soluble base'? [ab-124]

A molecule of hydrobromic acid (HBr) has one hydrogen that can be replaced by a metal to form a salt. Some acids have two hydrogens that can be replaced. If both hydrogens are replaced the 'normal' salt is formed. If one hydrogen only is replaced, an 'acid' salt is formed. Which of the following can form an acid salt? [ab-125]

A molecule of hydrobromic acid (HBr) has one hydrogen that can be replaced by a metal to form a salt. Some acids have two hydrogens that can be replaced. If both hydrogens are replaced the 'normal' salt is formed. If one hydrogen only is replaced, an 'acid' salt is formed. Which of the following can form an acid salt? [ab-126]

When hydrochloric acid is neutralised with sodium hydroxide, which two ions have the lowest concentrations in the resulting mixture? [ab-127]

Which of (1) - (5) represents where a blast of hot air is blown in? [me-1]

Which of (1) - (5) represents where molten iron is tapped off? [me-2]

Which of (1) - (5) represents where slag is removed? [me-3]

Which of (1) - (5) represents where waste gases are removed? [me-4]

Which of (1) - (5) represents where limestone is added? [me-5]

Which of (1) - (5) represents where coke (carbon) is added? [me-6]

Why is limestone added to the blast furnace? [me-7]

Iron is reduced in a blast furnace. This means? [me-8]

Which reaction is causes the high temperature in a blast furnace? [me-9]

In which reaction does an oxidation and a reduction produce the same product? [me-10]

Which reaction represents the iron ore reduction in a blast furnace? [me-11]

Which reaction removes solid acidic impurities from the iron produced in a blast furnace? [me-12]

Which of these blast furnace reactions is the most exothermic? [me-13]

Which reaction produces the molecule that reduces the iron ore to iron? [me-14]

In which of these blast furnace reactions does one gas molecule get oxidised to another gas molecule? [me-15]

Which of these blast furnace reactions forms the 'slag'? [me-16]

In the reactions in a blast furnace what happens to most of the carbon monoxide? [me-22]

Oxidation of a substance can be defined as? [me-23]

Reduction of a substance can be defined as? [me-24]

To produce aluminium, electricity is passed through? [me-31]

To produce aluminium by electrolysis the ore must be molten so that? [me-32]

During the electrolysis of molten aluminium oxide ore, the aluminium ions move? [me-33]

During the electrolysis of molten aluminium oxide ore, the oxide ions move? [me-34]

In the extraction of aluminium by electrolysis of molten aluminium oxide ore, the ore is dissolved in cryolite to? [me-35]

In the extraction of aluminium by electrolysis of its ore, the positive electrodes have to be regularly replaced because? [me-36]

In the extraction of aluminium by the electrolysis of molten aluminium oxide ore, the aluminium forms? [me-37]

In the extraction of aluminium by the electrolysis of molten aluminium oxide ore, oxygen forms? [me-38]

The name of a common ore from which iron can be extracted is called? [me-39]

The name of a common ore from which aluminium can be extracted is called? [me-40]

The name of the substance used to lower the melting point of aluminium oxide ore in the electrolytic extraction of aluminium is called? [me-41]

In the electrolysis of aluminium oxide to extract aluminium, the electrodes are made of? [me-42]

After the initial chemical extraction of copper from a copper ore, the copper is purified by? [me-51]

After the initial chemical extraction of copper from a copper ore, the copper is purified by electrolysis. The negative electrode is made of? [me-52]

After the initial chemical extraction of copper from a copper ore, the copper is purified by electrolysis. The positive electrode is made of? [me-53]

After the initial chemical extraction of copper from a copper ore, the copper is purified by electrolysis. The electrolyte solution contains dissolved? [me-54]

Which element is a metal that is most likely to be found in rocks as the metal itself? [me-55]

Which element is a non-metal with some metallic character? [me-56]

Which element is a metal that displaces hydrogen from dilute acids but not from cold water? [me-57]

Which element is a metal that cannot be extracted using carbon? [me-58]

Which metal is more reactive than hydrogen but less reactive than carbon? [me-59]

Which metal is less reactive than sodium but must be extracted using electrolysis of the molten ore? [me-60]

Which of these metals should react with dilute hydrochloric acid, but very slowly? [me-61]

Which metal is most likely to be found in rocks as the metal itself? [me-62]

Which contains the iron oxide in the blast furnace extraction of iron? [me-63]

Which is oxidised in the blast furnace extraction of iron? [me-64]

Which removes impurities from iron in the blast furnace extraction of iron? [me-65]

Which is NOT a raw material in the blast furnace extraction of iron? [me-66]

Which metals is obtained from bauxite ore? [me-67]

Which metals is obtained from haematite ore? [me-68]

Which metals is purified by electrolysis? [me-69]

Which metals is most likely to be found as the element and not as an oxide or sulfide compound? [me-70]

Which statement is TRUE? [me-71]

Which statement is TRUE? [me-72]

A mineral from which a metal can be extracted, is called? [me-73]

Which is the reason why aluminium was first extracted commercially by electrolysis in the 19th century but metals like iron had been extracted for thousands of years? [me-74]

Which metal is added to aluminium to make a stronger alloy? [me-77]

Which metal is added to steel to give it good anti-corrosion properties? [me-78]

Which metal is found as the free element in the Earth's crust? [me-79]

Which metal is less reactive than calcium, but whose oxide ore cannot be reduced with carbon? [me-80]

Which chemical change corresponds to an electrolysis? [me-81]

Which chemical change corresponds to a thermal decomposition? [me-82]

Which chemical change corresponds to an oxidation? [me-83]

Which chemical change corresponds to a neutralisation? [me-84]

Which chemical change corresponds to a reduction? [me-85]

Why is hot air blown into a blast furnace? [me-87]

Which is formed on burning coke in the blast furnace? [me-88]

Which removes the oxygen from the iron ore in a blast furnace? [me-89]

Which is produced when limestone combines with acidic impurities in the blast furnace extraction of iron? [me-90]

Which is added to a blast furnace to produce carbon monoxide and heat energy? [me-91]

Haematite iron ore contains mainly? [me-92]

Ingots of aluminium from its electrolytic extraction can be stored outside in all weathers. Why do aluminium ingots not corrode away, despite aluminium being quite high in the reactivity series of metals? [me-93]

Which pair of elements are non-metals which will displace less reactive metals from their oxide ores? [me-94]

Given the equation of the reduction of an iron oxide in a blast furnace:
? + 4CO ==> 3Fe + 4CO₂
What must the formula of the original iron oxide ore? [me-25]

It is possible for an iron oxide ore in a blast furnace to be directly reduced by the coke (carbon) to form iron.
a Fe₂O₃ + b C ==> c Fe + d CO₂
Which four quantities a, b, c and d give the ratio to balance the equation? [me-26]

It is possible for an iron oxide ore in a blast furnace to be directly reduced by the coke (carbon) to form iron.
a Fe₃O₄ + b C ==> c Fe + d CO₂
Which four quantities a, b, c and d give the ratio to balance the equation? [me-27]

Iron oxide ore in a blast furnace is mainly reduced by carbon monoxide to form iron.
a Fe₂O₃ + b CO ==> c Fe + d CO₂
Which four quantities a, b, c and d give the ratio to balance the equation? [me-28]

Which is the correct and balanced equation for the formation of carbon monoxide in the blast furnace? [me-29]

Given the equation of the reduction of an iron oxide in a blast furnace ...
a Fe₃O₄ + b CO ==> c Fe + d CO₂
Which four quantities a, b, c and d give the ratio to balance the equation? [me-30]

Which is TRUE about the extraction of aluminium by electrolysis? [me-75]

Which is TRUE about the extraction of aluminium by electrolysis? [me-76]

The diagram shows how copper is purified by electrolysis. What happens at the negative electrode? [me-95]

The diagram shows how copper is purified by electrolysis. What happens at the positive electrode? [me-96]

The diagram shows how copper is purified by electrolysis. Which is a suitable salt to use? [me-97]

Electrolysis processes can only be done on solutions or molten materials because? [me-98]

In an electrolysis process which word describes the overall chemical change? [me-99]

In an electrolysis process which word describes the change at the positive electrode? [me-100]

In an electrolysis process which word describes the change at the negative electrode? [me-101]

Sodium and chlorine can be manufactured by passing a direct current through the molten salt sodium chloride. What happens at the negative electrode? [me-102]

Sodium and chlorine can be manufactured by passing a direct current through the molten salt sodium chloride. What happens at the positive electrode? [me-103]

Sodium and chlorine can be manufactured by passing a direct current through the molten salt sodium chloride. What happens to the sodium ions is an example of? [me-104]

Sodium and chlorine can be manufactured by passing a direct current through the molten salt sodium chloride. What happens to the chloride ion is an example of? [me-105]

Given the neutralisation equation:
NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
25 cm³ of hydrochloric acid are neutralised by 20 cm³ of 0.05M sodium hydroxide. What is the molarity of the acid? [vct-1]

Given the neutralisation equation:
NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
15 cm³ of hydrochloric acid are neutralised by 25 cm³ of 0.06M sodium hydroxide. What is the molarity of the acid? [vct-2]

Given the neutralisation equation:
NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
40 cm³ of 0.05M hydrochloric acid are neutralised by 20 cm³ of a sodium hydroxide solution. What is the molarity of the alkali? [vct-3]

Given the neutralisation equation:
NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
25 cm³ of 0.16M hydrochloric acid are neutralised by 10 cm³ of a sodium hydroxide solution. What is the molarity of the alkali? [vct-4]

Given the neutralisation equation:
2KOH_(aq) + H₂SO_4(aq) ==> K₂SO_4(aq) + 2H₂O_(l)
What is the molarity of a sulfuric acid solution, if 15 cm³ of it are neutralised by 20 cm³ of a 0.3 M potassium hydroxide solution? [vct-5]

Given the neutralisation equation:
2KOH_(aq) + H₂SO_4(aq) ==> K₂SO_4(aq) + 2H₂O_(l)
What is the molarity of a sulfuric acid solution, if 30 cm³ of it are neutralised by 10 cm³ of a 0.6 M potassium hydroxide solution? [vct-6]

Given the neutralisation equation:
2KOH_(aq) + H₂SO_4(aq) ==> K₂SO_4(aq) +2H₂O_(l)
What is the molarity of a potassium hydroxide solution, if 10 cm³ of it are neutralised by 12 cm³ of a 0.5 M sulfuric acid solution? [vct-7]

Given the neutralisation equation:
2KOH_(aq) + H₂SO_4(aq) ==> K₂SO_4(aq) + 2H₂O_(l)
What is the molarity of a potassium hydroxide solution, if 5 cm³ of it are neutralised by 20 cm³ of a 1 M sulfuric acid solution? [vct-8]

Given the neutralisation equation:
3NaOH_(aq) + H₃PO_4(aq) ==> Na₃PO_4(aq) + 3H₂O_(l)
What is the molarity of a phosphoric acid solution, if 15 cm³ of it are neutralised by 22.5 cm³ of a 0.2 M sodium hydroxide solution? [vct-9]

Given the neutralisation equation:
3NaOH_(aq) + H₃PO_4(aq) ==> Na₃PO_4(aq) + 3H₂O_(l)
What is the molarity of a phosphoric acid solution, if 40 cm³ of it are neutralised by 15 cm³ of a 0.4 M sodium hydroxide solution? [vct-10]

Given the neutralisation equation:
3NaOH_(aq) + H₃PO_4(aq) ==> Na₃PO_4(aq) + 3H₂O_(l)
What is the molarity of a sodium hydroxide solution, if 21.6 cm³ of it are neutralised by 18 cm³ of a 0.2 M phosphoric acid solution? [vct-11]

Given the neutralisation equation:
3NaOH_(aq) + H₃PO_4(aq) ==> Na₃PO_4(aq) + 3H₂O_(l)
What is the molarity of a sodium hydroxide solution, if 15 cm³ of it are neutralised by 20 cm³ of a 0.6 M phosphoric acid solution? [vct-12]

What is the molarity of the solution formed by dissolving 20 g of sodium hydroxide (NaOH) in 1000 cm³ of water? (A_r's: Na=23, O=16, H=1) [msc-1]

What is the molarity of the solution formed by dissolving 10 g of sodium hydroxide (NaOH) in 500 cm³ of water? (A_r's: Na=23, O=16, H=1) [msc-2]

What is the molarity of the solution formed by dissolving 80 g of sodium hydroxide (NaOH) in 500 cm³ of water? (A_r's: Na=23, O=16, H=1) [msc-3]

What is the molarity of the solution formed by dissolving 9.8 g of sulfuric acid (H₂SO₄) in 1000 cm³ of water? (A_r's: H=1, S=32, O=16) [msc-4]

What is the molarity of the solution formed by dissolving 196 g of sulfuric acid (H₂SO₄) in 1000 cm³ of water? (A_r's: H=1, S=32, O=16) [msc-5]

What is the molarity of the solution formed by dissolving 49 g of sulfuric acid (H₂SO₄) in 250 cm³ of water? (A_r's: H=1, S=32, O=16) [msc-6]

What mass (g) of potassium hydroxide (KOH) is needed to make up 1000cm³ of a solution of concentration 1mol/dm³? (A_r's: K=39, O=16, H=1) [msc-7]

What mass (g) of potassium hydroxide (KOH) is needed to make up 500cm³ of a solution of concentration 0.2mol/dm³? (A_r's: K=39, O=16, H=1) [msc-8]

What mass (g) of potassium hydroxide (KOH) is needed to make up 500cm³ of a solution of concentration 4.0mol/dm³? (A_r's: K=39, O=16, H=1) [msc-9]

What mass (g) of hydrogen chloride (HCl) is needed to make up 1000cm³ of a solution of concentration 1mol/dm³? (A_r's: H=1, Cl=35.5) [msc-10]

What mass (g) of hydrogen chloride (HCl) is needed to make up 500cm³ of a solution of concentration 4mol/dm³? (A_r's: H=1, Cl=35.5) [msc-11]

What mass (g) of hydrogen chloride (HCl) is needed to make up 500cm³ of a solution of concentration 0.2mol/dm³? (A_r's: H=1, Cl=35.5) [msc-12]