Edexcel GCSE 9-1 CHEMISTRY/Combined Science QUIZ TOPIC 3 "CHEMICAL CHANGES" (Foundation Tier)

In the electrolysis of moderately concentrated sodium chloride solution (brine) using carbon/platinum electrodes, the principal product formed at the positive anode is? [ef1]
1. chlorine
2. hydrogen
3. oxygen
4. sodium
In the electrolysis of moderately concentrated sodium chloride solution (brine) using carbon/platinum electrodes, the principal product formed at the negative cathode is? [ef2]
1. chlorine
2. hydrogen
3. oxygen
4. sodium
When copper(II) sulfate solution undergoes electrolysis using carbon/platinum electrodes the product at the positive anode is? [ef3]
1. sulfur
2. hydrogen
3. oxygen
4. copper
When copper(II) sulfate solution undergoes electrolysis using carbon/platinum electrodes the product at the negative cathode is? [ef4]
1. sulfur
2. hydrogen
3. oxygen
4. copper
In the electrolysis of sodium sulfate solution with carbon/platinum electrodes, what product is formed on the surface of the negative cathode? [ef5]
1. hydrogen
2. oxygen
3. sodium
4. sulfur dioxide
In the electrolysis of sodium sulfate solution with carbon/platinum electrodes, what product is formed on the surface of the positive anode? [ef6]
1. hydrogen
2. oxygen
3. sodium
4. sulfur dioxide
In the electrolysis of water acidified with sulfuric acid, using carbon/platinum electrodes, what product is formed on the surface of the negative cathode? [ef7]
1. sulfur
2. sulfur dioxide
3. hydrogen
4. oxygen
In the electrolysis of water acidified with sulfuric acid, using carbon/platinum electrodes, what product is formed on the surface of the positive anode? [ef8]
1. copper ions
2. sulfur dioxide
3. hydrogen
4. oxygen
When copper(II) sulfate solution undergoes electrolysis using a carbon cathode and copper anode electrodes the product at the negative cathode is? [ef9]
1. copper
2. blue copper(II) ions
3. oxygen
4. hydrogen
When copper(II) sulfate solution undergoes electrolysis using a carbon cathode and copper anode electrodes the product at the positive anode is? [ef10]
1. copper
2. blue copper(II) ions
3. oxygen
4. hydrogen
When copper(II) chloride solution undergoes electrolysis using a carbon/platinum electrodes the product at the negative cathode is? [ef11]
1. hydrogen
2. blue copper(II) ions
3. copper
4. chlorine
When copper(II) chloride solution undergoes electrolysis using a carbon/platinum electrodes the product at the positive anode is? [ef12]
1. hydrogen
2. blue copper(II) ions
3. copper
4. chlorine
Which of the following statements is FALSE concerning the electrolysis of molten lead bromide, PbBr₂ ? [ef13]
1. solid lead bromide can also undergo electrolysis
2. lead is formed at the cathode
3. bromine is formed at the anode
4. chlorine
Which of the following statements is FALSE concerning the electrolysis of molten lead bromide, PbBr₂ ? [ef14]
1. solid lead bromide cannot undergo electrolysis
2. lead oxide is formed at the cathode
3. bromine is formed at the anode
4. molten lead bromide can be decomposed by the passage of a d.c. electric current
Which of the following statements is FALSE concerning the electrolysis of molten lead bromide, PbBr₂ ? [ef15]
1. solid lead bromide cannot undergo electrolysis
2. lead is formed at the cathode
3. oxygen is formed at the anode
4. molten lead bromide can be decomposed by the passage of a d.c. electric current
Which of the following statements is FALSE concerning the electrolysis of molten lead bromide, PbBr₂ ? [ef16]
1. solid lead bromide cannot undergo electrolysis
2. lead is formed at the cathode
3. bromine is formed at the anode
4. molten lead bromide can be decomposed by the passage of an a.c. electric current
Which of the following statements is FALSE concerning the electrolysis of molten sodium chloride, NaCl ? [ef17]
1. solid sodium chloride can also undergo electrolysis
2. sodium is formed at the cathode
3. chlorine is formed at the anode
4. molten sodium chloride can be decomposed by the passage of an d.c. electric current
Which of the following statements is FALSE concerning the electrolysis of molten sodium chloride, NaCl ? [ef18]
1. solid sodium chloride cannot undergo electrolysis
2. sodium is oxidised at the cathode
3. chlorine is formed at the anode
4. molten sodium chloride can be decomposed by the passage of an d.c. electric current
Which of the following statements is FALSE concerning the electrolysis of molten sodium chloride, NaCl ? [ef19]
1. solid sodium chloride cannot undergo electrolysis
2. sodium is formed at the cathode
3. chlorine is oxidised at the anode
4. molten sodium chloride can be decomposed by the passage of an d.c. electric current
Which of the following statements is FALSE concerning the electrolysis of molten sodium chloride, NaCl ? [ef20]
1. solid sodium chloride cannot undergo electrolysis
2. sodium is formed at the cathode
3. chlorine is formed at the anode
4. molten sodium chloride can be decomposed by the passage of an a.c. electric current
Which of the following statements is FALSE concerning the electrolysis of molten aluminium oxide, Al₂O₃ ? [ef21]
1. solid aluminium oxide can also undergo electrolysis
2. aluminium is formed at the cathode
3. oxygen is formed at the anode
4. molten aluminium oxide can be decomposed by the passage of an d.c. electric current
Which of the following statements is FALSE concerning the electrolysis of molten aluminium oxide, Al₂O₃ ? [ef22]
1. solid aluminium oxide cannot undergo electrolysis
2. aluminium is oxidised at the cathode
3. oxygen is formed at the anode
4. molten aluminium oxide can be decomposed by the passage of an d.c. electric current
Which of the following statements is FALSE concerning the electrolysis of molten aluminium oxide, Al₂O₃ ? [ef23]
1. solid aluminium oxide cannot undergo electrolysis
2. aluminium is formed at the cathode
3. oxygen cannot form at the anode
4. molten aluminium oxide can be decomposed by the passage of an d.c. electric current
Which of the following statements is FALSE concerning the electrolysis of molten aluminium oxide, Al₂O₃ ? [ef24]
1. solid aluminium oxide cannot undergo electrolysis
2. aluminium is formed at the cathode
3. oxygen is formed at the anode
4. molten aluminium oxide can be decomposed by the passage of an a.c. electric current
When copper(II) sulfate solution undergoes electrolysis using copper electrodes the product at the positive anode is? [ef25]
1. blue copper(II) ions
2. copper
3. hydrogen
4. oxygen
When copper(II) sulfate solution undergoes electrolysis using copper electrodes the product at the negative cathode is? [ef26]
1. blue copper(II) ions
2. copper
3. hydrogen
4. oxygen
Which of the following statements about electrolysis is FALSE? [ef27]
1. metals or hydrogen are formed at the cathode
2. any ionic compound dissolved in water can undergo electrolysis
3. an electrolyte is a solution or melt that cannot conduct a d.c. electrical current
4. positively charged ions migrate to the negatively charged cathode
Which of the following statements about electrolysis is FALSE? [ef28]
1. metals or hydrogen are formed at the cathode
2. any ionic compound dissolved in water can undergo electrolysis
3. an electrolyte is a solution or melt that contains ions and so conducts electricity
4. positively charged ions migrate to the anode
Which of the following statements about electrolysis is FALSE? [ef29]
1. metals or hydrogen are formed at the anode
2. any ionic compound dissolved in water can undergo electrolysis
3. an electrolyte is a solution or melt that contains ions and so conducts electricity
4. negatively charged ions migrate to the anode
Which of the following statements about electrolysis is FALSE? [ef30]
1. any ionic compound dissolved in water can undergo electrolysis
2. non-metals like oxygen and chlorine are formed at the cathode
3. an electrolyte is a solution or melt that contains ions and so conducts electricity
4. negatively charged ions migrate to the anode
Which of the following statements about electrolysis is FALSE? [ef31]
1. any ionic compound dissolved in water can undergo electrolysis
2. non-metals like oxygen and chlorine are formed at the anode
3. any compound dissolved in water can readily conduct electricity and undergo electrolysis.
4. positively charged ions migrate to the cathode
Which of the following statements about electrolysis is FALSE? [ef32]
1. any ionic compound dissolved in water can undergo electrolysis
2. non-metals like oxygen and chlorine are formed at the anode
3. solid ionic compounds cannot undergo electrolysis.
4. positively charged ions migrate to the anode
What do we call the positive electrode in an electrolysis cell? [ef33]
1. anode
2. cathode
3. electrolyte
4. anion
5. cation
What do we call the negative electrode in an electrolysis cell? [ef34]
1. anode
2. cathode
3. electrolyte
4. anion
5. cation
What do we call a negatively charged ion? [ef35]
1. anode
2. cathode
3. electrolyte
4. anion
5. cation
What do we call a positively charged ion? [ef36]
1. anode
2. cathode
3. electrolyte
4. anion
5. cation
Which of the following is a test for hydrogen gas? [gt1]
1. Gives a squeaky pop with a lit splint.
2. Relights a glowing red splint.
3. Turns blue litmus red then bleaches it white.
4. Turns red litmus paper blue
5. Gives a milky white precipitate with limewater (calcium hydroxide solution).
Which of the following is a test for oxygen gas? [gt2]
1. Gives a squeaky pop with a lit splint.
2. Relights a glowing red splint.
3. Turns blue litmus red then bleaches it white.
4. Turns red litmus paper blue
5. Gives a milky white precipitate with limewater (calcium hydroxide solution).
Which of the following is a test for chlorine gas? [gt3]
1. Gives a squeaky pop with a lit splint.
2. Relights a glowing red splint.
3. Turns blue litmus red then bleaches it white.
4. Turns red litmus paper blue
5. Gives a milky white precipitate with limewater (calcium hydroxide solution).
Which of the following is a test for ammonia gas? [gt4]
1. Gives a squeaky pop with a lit splint.
2. Relights a glowing red splint.
3. Turns blue litmus red then bleaches it white.
4. Turns red litmus paper blue
5. Gives a milky white precipitate with limewater (calcium hydroxide solution).
Which of the following is a test for carbon dioxide gas? [gt5]
1. Gives a squeaky pop with a lit splint.
2. Relights a glowing red splint.
3. Turns blue litmus red then bleaches it white.
4. Turns red litmus paper blue
5. Gives a milky white precipitate with limewater (calcium hydroxide solution).
The reaction illustrated produces ...? [ab-1]
1. a salt + water
2. a salt only
3. a salt and hydrogen
4. water only
The type of reaction illustrated is called ...? [ab-2]
1. decomposition
2. neutralisation
3. displacement
4. oxidation
To produce sodium sulfate by the reaction illustrated you need ...? [ab-3]
1. potassium sulfate + sodium hydroxide
2. sodium chloride + sulfuric acid
3. sodium hydroxide + sulfuric acid
4. sodium hydroxide + hydrochloric acid
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]
1. blue
2. orange
3. yellow
4. green
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]
1. blue
2. orange
3. yellow
4. green
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]
1. blue
2. orange
3. purple
4. green
To produce potassium chloride by the reaction illustrated you need ...? [ab-7]
1. potassium sulfate + hydrochloric acid
2. sodium chloride + potassium hydroxide
3. potassium hydroxide + hydrochloric acid
4. sodium hydroxide + hydrochloric acid
To produce lithium nitrate by the reaction illustrated you need ...? [ab-8]
1. lithium sulfate + nitric acid
2. sodium nitrate + lithium hydroxide
3. potassium nitrate + lithium hydroxide
4. lithium hydroxide + nitric acid
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]
1. transition metal chloride + water
2. transition metal chloride + hydrogen
3. transition metal chloride only
4. water only
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]
1. electrolysis
2. neutralisation
3. reduction
4. displacement
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]
1. universal indicator will give a yellow colour in the acid
2. universal indicator will give a pale blue colour in the acid
3. no more of the metal oxide will dissolve in the acid
4. the solution will go clear
The diagram shows a method of preparing salts.
Which of the following will form a transition metal sulfate and hydrogen? [ab-12]
1. transition metal oxide + sulfuric acid
2. transition metal + sodium sulfate
3. transition metal hydroxide + potassium sulfate
4. transition metal + sulfuric acid
Which is the strongest base or alkali? [ab-13]
1. limewater
2. baking soda
3. vinegar
4. wine
Which is the weakest base or alkali? [ab-14]
1. limewater
2. baking soda
3. vinegar
4. wine
Which is the strongest acid? [ab-15]
1. limewater
2. baking soda
3. vinegar
4. wine
Which is the weakest acid? [ab-16]
1. limewater
2. baking soda
3. vinegar
4. wine
Which of the following can be mixed to form a neutral solution? [ab-17]
1. limewater and fizzy drink
2. baking soda and toothpaste
3. vinegar and wine
4. calomine lotion and common salt
Which of the following can be mixed to form a neutral solution? [ab-18]
1. limewater and washing soda
2. baking soda and wine
3. vinegar and common salt
4. ammonia and limewater
Which of the following can be safely used to treat an acid bee sting? [ab-19]
1. limewater
2. wine
3. calomine lotion
4. common salt
Which of the following can be safely used to treat an alkaline wasp sting? [ab-20]
1. calomine lotion
2. vinegar
3. washing soda
4. common salt
Which of the following is most likely to be part of an ant-acid indigestion medicine? [ab-21]
1. sodium hydrogencarbonate
2. ammonia
3. washing soda
4. limewater
Which of the following is the safest to use to treat an acid nettle sting? [ab-22]
1. wine
2. sodium hydrogencarbonate
3. washing soda
4. limewater
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]
1. a soluble neutral substance
2. a slightly soluble acid
3. a very soluble alkali
4. a slightly soluble alkali
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]
1. a soluble neutral substance
2. a slightly soluble acid
3. a very soluble alkali
4. a slightly soluble alkali
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]
1. a soluble neutral substance
2. a slightly soluble acid
3. a slightly soluble neutral substance
4. a slightly soluble alkali
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]
1. a soluble acidic substance
2. a slightly soluble neutral substance
3. a soluble acidic substance
4. a slightly soluble alkali
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]
1. a soluble weak alkali
2. a very soluble neutral substance
3. a soluble weak acid
4. a slightly soluble strong acid
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]
1. a soluble weak alkali
2. a slightly soluble neutral substance
3. a soluble weak acid
4. a slightly soluble strong acid
Which of the following is the pH of a strong acid? [ab-49]
1. pH 1
2. pH 14
3. pH 5
4. pH 9
Which of the following is the pH of a strong alkali? [ab-50]
1. pH 1
2. pH 14
3. pH 5
4. pH 9
Which of the following is the pH of a weak acid? [ab-51]
1. pH 1
2. pH 14
3. pH 5
4. pH 9
Which of the following is the pH of a weak alkali? [ab-52]
1. pH 1
2. pH 14
3. pH 5
4. pH 9
When dilute nitric acid reacts with sodium hydroxide the products are? [ab-53]
1. sodium nitrate + water
2. sodium nitrate + hydrogen
3. sodium hydride + hydrogen nitrate
4. sodium nitrite + oxygen
dilute acid X + copper(II) carbonate ==> copper(II) sulfate + water + carbon dioxide. Acid X is? [ab-54]
1. nitric acid
2. sulfuric acid
3. sulfurous acid
4. hydrochloric acid
dilute acid X + magnesium hydroxide ==> magnesium chloride + water. Acid X is? [ab-55]
1. ammonium chlorate
2. sulfuric acid
3. hydrochloric acid
4. chloric acid
magnesium + dilute acid X ==> magnesium nitrate + hydrogen. Acid X is? [ab-56]
1. ammonium nitrate
2. nitrogen dioxide
3. nitrous acid
4. nitric acid
When hydrochloric acid is added to copper carbonate, the gas bubbles formed can be identified by? [ab-57]
1. burning with a squeaky pop
2. turning limewater cloudy
3. relighting a glowing splint
4. turning blue litmus red and then bleaching it
When sulfuric acid is added to zinc, the gas bubbles formed can be identified by? [ab-58]
1. burning with a squeaky pop
2. turning limewater cloudy
3. relighting a glowing splint
4. turning blue litmus red and then bleaching it
An iron tray was cleaned with dilute hydrochloric acid and bubbles formed. The gas formed was? [ab-59]
1. oxygen
2. chlorine
3. hydrogen
4. carbon dioxide
A carbonate mineral rock was tested with dilute sulfuric acid and bubbles formed. The gas formed was? [ab-60]
1. carbon monoxide
2. sulfur dioxide
3. hydrogen
4. carbon dioxide
Dilute sulfuric acid will only form one product when reacted with? [ab-61]
1. ammonia
2. copper
3. magnesium oxide
4. zinc carbonate
Dilute sulfuric acid will not readily react with? [ab-62]
1. ammonia
2. copper
3. magnesium oxide
4. zinc carbonate
Which will form a salt and water when reacted with dilute hydrochloric acid? [ab-63]
1. ammonia
2. copper
3. magnesium oxide
4. zinc carbonate
Which will form a salt, water and carbon dioxide when reacted with dilute hydrochloric acid? [ab-64]
1. ammonia
2. copper
3. magnesium oxide
4. zinc carbonate
Which of these reactants is the best combination to use to make magnesium sulfate? [ab-65]
1. magnesium oxide + sulfuric acid
2. magnesium chloride + sodium sulfate
3. sulfuric acid + magnesium chloride
4. magnesium nitrate + sulfuric acid
Which of these reactants is the best combination to use to make zinc nitrate? [ab-66]
1. zinc chloride + nitric acid
2. nitric acid + zinc hydroxide
3. nitric acid + zinc sulfate
4. zinc oxide + nitrous acid
Which of these reactants is the best combination to use to make copper(II) sulfate? [ab-67]
1. copper + sulfuric acid
2. copper(II) chloride + sodium sulfate
3. copper(II) oxide + sulfuric acid
4. copper(II) nitrate + sodium chloride
Which of these reactants is the best combination to use to make zinc chloride? [ab-68]
1. calcium chloride + zinc carbonate
2. zinc nitrate + hydrochloric acid
3. sodium chloride + zinc oxide
4. zinc carbonate + hydrochloric acid
The diagram shows the preparation of a salt. Which word applies to stages 1-2? [ab-69]
1. neutralisation
2. filtration
3. evaporation
4. condensation
The diagram shows the preparation of a salt. Which word applies to stage 3? [ab-70]
1. neutralisation
2. filtration
3. evaporation
4. condensation
The diagram shows the preparation of a salt. Which word describes the change from 3 to 4? [ab-71]
1. neutralisation
2. filtration
3. evaporation
4. condensation
The diagram shows the preparation of a salt. Which word describes stage 4? [ab-72]
1. neutralisation
2. filtration
3. evaporation
4. crystallisation
The diagram shows the preparation of a salt using a solid and an acid. Which is true concerning this method? [ab-73]
1. the solid can be an insoluble base
2. it is not a neutralisation reaction
3. you cannot use an insoluble carbonate
4. the solid must be an alkali
The diagram shows the preparation of a salt. Which word means a 'soluble base'? [ab-74]
1. oxide
2. alkali
3. hydroxide
4. indicator
The diagram shows a method of salt preparation. Which statement is true about the method? [ab-75]
1. the method uses an insoluble base
2. the acid must be in the burette and the alkali in the flask
3. the neutralisation point is detected with an indicator
4. the salt will precipitate at the neutralisation point
The diagram shows one method of salt preparation. Which statement is true about the method illustrated? [ab-76]
1. the salt will precipitate at the neutralisation point
2. an alkali is used
3. the neutralisation point is detected with an indicator
4. the method uses an insoluble base
Complete the word equation:
zinc oxide + hydrochloric acid ==> ..???.. [ab-77]
1. zinc chloride + hydrogen
2. zinc hydrochloride + water
3. zinc chloride + water
4. zinc hydrochloride chloride + water + carbon dioxide
Complete the word equation:
zinc hydroxide + hydrochloric acid ==> ..???.. [ab-78]
1. zinc hydrochloride + water
2. zinc chloride + water + carbon dioxide
3. zinc hydrochloride + hydrogen
4. zinc chloride + water
Complete the word equation:
zinc + hydrochloric acid ==> ..???.. [ab-79]
1. zinc chloride + hydrogen
2. zinc chloride + water
3. zinc hydrochloride + hydrogen
4. zinc hydrochloride + water
Complete the word equation:
zinc carbonate + hydrochloric acid ==> ..???.. [ab-80]
1. zinc hydrochloride + water
2. zinc chloride + water + carbon dioxide
3. zinc hydrochloride + hydrogen
4. zinc chloride + carbon dioxide
Complete the word equation:
nickel + sulfuric acid ==> ..???.. [ab-81]
1. nickel sulfate + hydrogen
2. nickel sulfate + water
3. nickel sulfite + water
4. nickel sulfite + hydrogen
Complete the word equation:
nickel oxide + sulfuric acid ==> ..???.. [ab-82]
1. nickel sulfate + hydrogen
2. nickel sulfate + water
3. nickel sulfite + water
4. nickel sulfite + hydrogen
Complete the word equation:
nickel hydroxide + sulfuric acid ==> ..???.. [ab-83]
1. nickel sulfate + hydrogen
2. nickel sulfite + water
3. nickel sulfate + water
4. nickel sulfite + hydrogen
Complete the word equation:
nickel carbonate + sulfuric acid ==> ..???.. [ab-84]
1. nickel sulfate + carbon dioxide
2. nickel sulfite + water
3. nickel sulfate + water
4. nickel sulfate + water + carbon dioxide
Complete the word equation:
ammonia + sulfuric acid ==> ..???.. [ab-85]
1. ammonium sulfate
2. ammonia sulfate
3. ammonium hydrogensulfate
4. ammonia sulfite
Complete the word equation:
ammonia + hydrochloric acid ==> ..???.. [ab-86]
1. ammonia chloride
2. ammonium chloride
3. ammonium hydrochloride
4. ammonia hydrochloride
Complete the word equation:
ammonia + nitric acid ==> ..???.. [ab-87]
1. ammonia nitrite
2. ammonium nitrite
3. ammonium nitrate
4. ammonia hydrogennitrate
Complete the word equation:
sodium hydroxide + sulfuric acid ===> ..???.. [ab-88]
1. sodium sulfate
2. sodium sulfate + hydrogen
3. sodium hydrogensulfite + water
4. sodium sulfate + water
Given the following neutralisation equation:
NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
Which is the alkali? [ab-89]
1. NaOH
2. HCl
3. NaCl
4. H₂O
Given the following neutralisation equation:
NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
Which is the acid? [ab-90]
1. NaOH
2. HCl
3. NaCl
4. H₂O
Given the following neutralisation equation:
NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
Which is the salt? [ab-91]
1. NaOH
2. HCl
3. NaCl
4. H₂O
Given the following neutralisation equation:
NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
Which is the base? [ab-92]
1. H₂O
2. HCl
3. NaCl
4. NaOH
Which two reactants would you use to make potassium nitrate? [ab-101]
1. nitric acid and potassium hydroxide
2. sodium nitrate and potassium chloride
3. sulfuric acid and sodium nitrate
4. nitric acid and sodium hydroxide
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]
1. transition metal oxide + sodium chloride
2. transition metal + hydrochloric acid
3. transition metal hydroxide + hydrochloric acid
4. transition metal + sulfuric acid
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]
1. boiling
2. distillation
3. filtration
4. crystallisation
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]
1. see if crystals form on evaporating the solution
2. see if the solution is clear
3. measure the boiling point of the solution
4. use indicator paper
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]
1. cobalt oxide + sulfuric acid
2. cobalt + hydrochloric acid
3. cobalt + nitric acid
4. cobalt hydroxide + nitric acid
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]
1. cobalt oxide + sulfuric acid
2. cobalt + hydrochloric acid
3. cobalt hydroxide + sodium chloride
4. cobalt hydroxide + nitric acid
Which two reactants make ammonium chloride and water? [ab-107]
1. ammonium sulfate and hydrochloric acid
2. ammonium hydroxide and sodium chloride
3. ammonium hydroxide and hydrochloric acid
4. ammonia and potassium chloride
Which of these gives an alkaline solution when dissolved in water? [ab-108]
1. aluminium hydroxide
2. copper hydroxide
3. iron hydroxide
4. ammonia (ammonium hydroxide)
Which of these gives an alkaline solution when dissolved in water? [ab-109]
1. sodium hydroxide
2. copper hydroxide
3. iron hydroxide
4. aluminium hydroxide
Which of these gives an alkaline solution when dissolved in water? [ab-109]
1. nickel hydroxide
2. potassium hydroxide
3. iron hydroxide
4. magnesium hydroxide
Which of A to D completes the equation ..?.. [ab-111]
..?.. + potassium hydroxide ==> potassium sulfate + water
1. potassium nitrate
2. calcium hydroxide
3. sulfuric acid
4. sodium chloride
Which of A to D completes the equation ..?.. [ab-112]
hydrochloric acid + sodium hydroxide ==> ..?.. + water
1. sodium sulfate
2. potassium chloride
3. calcium chloride
4. sodium chloride
Which of A to D completes the equation ..?.. [ab-113]
..?.. + nitric acid ==> ammonium nitrate
1. ammonia (ammonium hydroxide)
2. calcium hydroxide
3. ammonium sulfate
4. sodium nitrate
Which of A to D completes the equation ..?.. [ab-114]
sulfuric acid + ..?.. ==> calcium sulfate + water
1. ammonia sulfate
2. calcium hydroxide
3. calcium chloride
4. sodium sulfate

Edexcel GCSE 9-1 CHEMISTRY/Combined Science QUIZ TOPIC 3 "CHEMICAL CHANGES" (Foundation Tier)

CLICK [?] read feedback. EMAIL query?comment, BUT quote Q database number [??-xx] © Doc Brown's Chemistry