AQA GCSE Chemistry Unit 2.5

Matthew T
Quiz by , created over 5 years ago

Twenty questions on the fifth section of Unit 2 in AQA GCSE Chemistry: Salts and electrolysis.

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Matthew T
Created by Matthew T over 5 years ago
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Question 1

Question
Which ion do all acids release in solution?
Answer
  • H+
  • OH-

Question 2

Question
Which ion do all alkalis release in solution?
Answer
  • H+
  • OH-

Question 3

Question
What does the state symbol (aq) mean?
Answer
  • Chemical is only found in aquaria
  • Found in aqueous solution
  • Chemical is water

Question 4

Question
True or false? Reacting a metal in acid produces hydrogen gas.
Answer
  • True
  • False

Question 5

Question
Which salt would be produced with reacting cadmium hydroxide and nitric acid?
Answer
  • Cadmium chloride
  • Cadmium sulphate
  • Cadmium nitrate

Question 6

Question
Which of these are neutralisation reactions?
Answer
  • H2SO4 + 2NaOH --> Na2SO4 + 2H2O
  • H2SO4 + 2Na --> Na2SO4 + H2
  • H2SO4 + 2KOH --> K2SO4 + 2H2O
  • H2SO4 + 2K --> K2SO4 + H2

Question 7

Question
Which of these is a non-metallic cation?
Answer
  • Fe3+
  • NH4+
  • Mg2+

Question 8

Question
True or false? Lead iodide is soluble so it forms a precipitate.
Answer
  • True
  • False

Question 9

Question
True or false? The substance that is broken down by electrolysis is the electrolyte.
Answer
  • True
  • False

Question 10

Question
True or false? Anions are attracted to the negatively charged electrode.
Answer
  • True
  • False

Question 11

Question
Which of these ions is reduced and at which electrode?
Answer
  • Pb2+ at the anode
  • Pb2+ at the cathode
  • Br- at the anode
  • Br- at the cathode

Question 12

Question
Which of these ions is oxidised and at which electrode?
Answer
  • Pb2+ at the anode
  • Pb2+ at the cathode
  • Br- at the anode
  • Br- at the cathode

Question 13

Question
Which of these is a correct, balanced, set of half-equations?
Answer
  • Pb2+ + 2e- --> Pb, Br- --> Br + e-
  • Pb2+ + e- --> Pb+, Br- --> Br+ + 2e-
  • Pb2+ + 2e- --> Pb, 2Br- --> Br2 + 2e-

Question 14

Question
What is the name of the ore of aluminium?
Answer
  • Bauxite
  • Haematite
  • Cryolite
  • Malachite

Question 15

Question
What is the name of the chemical that reduces the operating temperature of an aluminium electrolysis cell?
Answer
  • Bauxite
  • Haematite
  • Cryolite
  • Malachite

Question 16

Question
Which of these are uses of chlorine from the electrolysis of brine?
Answer
  • Making margarine
  • Making bleach
  • Making paper
  • Disinfecting swimming pools
  • Making soap
  • Making polyvinylchloride

Question 17

Question
Which of these are uses of hydrogen from the electrolysis of brine?
Answer
  • Making margarine
  • Making bleach
  • Making paper
  • Disinfecting swimming pools
  • Making soap
  • Making polyvinylchloride

Question 18

Question
Which of these are uses of sodium hydroxide from the electrolysis of brine?
Answer
  • Making margarine
  • Making bleach
  • Making paper
  • Disinfecting swimming pools
  • Making soap
  • Making polyvinylchloride

Question 19

Question
True or false? Electroplating is often done to make production of goods cheaper.
Answer
  • True
  • False

Question 20

Question
True or false? As the anode is made of the plating metal, the electrolyte is not required to contain ions of that metal.
Answer
  • True
  • False