Test
AQA GCSE Chemistry Unit 2.5
Este test tiene tiempo límite, así que se abre en el reproductor de siempre.
Preguntas del test (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.
- AVerdadero
- 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.
- AVerdadero
- BFalso
9True or false? The substance that is broken down by electrolysis is the electrolyte.
- AVerdadero
- BFalso
10True or false? Anions are attracted to the negatively charged electrode.
- AVerdadero
- 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.
- AVerdadero
- BFalso
20True or false? As the anode is made of the plating metal, the electrolyte is not required to contain ions of that metal.
- AVerdadero
- BFalso
Información
- Descripción
- Twenty questions on the fifth section of Unit 2 in AQA GCSE Chemistry: Salts and electrolysis.
- Autor
- Matthew T
- Idioma
- English
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- 1.397
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