Quiz
AQA GCSE Chemistry Unit 2.5
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Perguntas do quiz (20)
1Which ion do all acids release in solution?
- AH+
- BOH-
2Which ion do all alkalis release in solution?
- AH+
- BOH-
3What does the state symbol (aq) mean?
- AChemical is only found in aquaria
- BFound in aqueous solution
- CChemical is water
4True or false? Reacting a metal in acid produces hydrogen gas.
- AVerdadeiro
- BFalso
5Which salt would be produced with reacting cadmium hydroxide and nitric acid?
- ACadmium chloride
- BCadmium sulphate
- CCadmium nitrate
6Which of these are neutralisation reactions?
- AH2SO4 + 2NaOH --> Na2SO4 + 2H2O
- BH2SO4 + 2Na --> Na2SO4 + H2
- CH2SO4 + 2KOH --> K2SO4 + 2H2O
- DH2SO4 + 2K --> K2SO4 + H2
7Which of these is a non-metallic cation?
- AFe3+
- BNH4+
- CMg2+
8True or false? Lead iodide is soluble so it forms a precipitate.
- AVerdadeiro
- BFalso
9True or false? The substance that is broken down by electrolysis is the electrolyte.
- AVerdadeiro
- BFalso
10True or false? Anions are attracted to the negatively charged electrode.
- AVerdadeiro
- BFalso
11Which of these ions is reduced and at which electrode?
- APb2+ at the anode
- BPb2+ at the cathode
- CBr- at the anode
- DBr- at the cathode
12Which of these ions is oxidised and at which electrode?
- APb2+ at the anode
- BPb2+ at the cathode
- CBr- at the anode
- DBr- at the cathode
13Which of these is a correct, balanced, set of half-equations?
- APb2+ + 2e- --> Pb, Br- --> Br + e-
- BPb2+ + e- --> Pb+, Br- --> Br+ + 2e-
- CPb2+ + 2e- --> Pb, 2Br- --> Br2 + 2e-
14What is the name of the ore of aluminium?
- ABauxite
- BHaematite
- CCryolite
- DMalachite
15What is the name of the chemical that reduces the operating temperature of an aluminium electrolysis cell?
- ABauxite
- BHaematite
- CCryolite
- DMalachite
16Which of these are uses of chlorine from the electrolysis of brine?
- AMaking margarine
- BMaking bleach
- CMaking paper
- DDisinfecting swimming pools
- EMaking soap
- FMaking polyvinylchloride
17Which of these are uses of hydrogen from the electrolysis of brine?
- AMaking margarine
- BMaking bleach
- CMaking paper
- DDisinfecting swimming pools
- EMaking soap
- FMaking polyvinylchloride
18Which of these are uses of sodium hydroxide from the electrolysis of brine?
- AMaking margarine
- BMaking bleach
- CMaking paper
- DDisinfecting swimming pools
- EMaking soap
- FMaking polyvinylchloride
19True or false? Electroplating is often done to make production of goods cheaper.
- AVerdadeiro
- BFalso
20True or false? As the anode is made of the plating metal, the electrolyte is not required to contain ions of that metal.
- AVerdadeiro
- BFalso
Informações
- Descrição
- Twenty questions on the fifth section of Unit 2 in AQA GCSE Chemistry: Salts and electrolysis.
- Autor
- Matthew T
- Idioma
- English
- Visualizações
- 1.397
- Etiquetas
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