C6 - Electrolysis

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Total cards: 17•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

electrolysis

Back (Answer)

breakdown of a substance by electricity

Front (Question)

electrolyte

Back (Answer)

compound that is broken down -either molten/dissolved

Front (Question)

anode

Back (Answer)

+ electrode

Front (Question)

electrode

Back (Answer)

-rods that conduct electricity

Front (Question)

cathode

Back (Answer)

• electrode

Front (Question)

cation

Back (Answer)

+ve ion

Front (Question)

anion

Back (Answer)

-ve ion

Front (Question)

why are electrodes made from unreactive metals

Back (Answer)

so they do not react with the product made

Front (Question)

during electrolysis, what happens to ions at electrodes

Back (Answer)

-cations move towards the cathode -anions move towards the anode -opposites attract

#10

Front (Question)

when ions reach electrodes

Back (Answer)

they lose charge - become elements

#11

Front (Question)

what happens to metal below hydrogen on the reactivity series

Back (Answer)

they are deposited in the aqueous solution

#12

Front (Question)

what happens if 2 products are made at the electrodes

Back (Answer)

less reactive one is deposited

#13

Front (Question)

if halide ions are present

Back (Answer)

the halogen is always formed

#14

Front (Question)

cryolite

Back (Answer)

reduces melting point of aluminium oxide -less energy is used -melting point become 850.c

#15

Front (Question)

why do carbon anodes need to be replaced regularly

Back (Answer)

as o2 reacts to form co2 -they wear away after awhile

#16

Front (Question)

brine

Back (Answer)

-concentrated sodium chloride solution -dissolved in water = solution

#17

Front (Question)

elecrolysis of brine = products

Back (Answer)

-chlorine gas at anode -H2 at cathode -sodium hydroxide solution