Electrolysis - In Depth

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  • Created by: Harry
  • Created on: 04-05-14 20:35
What do electrolytes all have in common?
They're all ionic compounds (acids/alkalis/metal oxides)
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What are both the electrodes and the electrodes attached to them?
Cathode = NEGATIVE, Anode = POSITIVE
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What are the general facts about electrolysis?
Covalent substances DO NOT conduct, no solid compounds conduct electricity, only ionic substances can conduct once melted/dissolved
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Why do covalent substances not conduct?
No ions, therefore no free electrons
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Why can only ionic compounds conduct electricity once molten?
We need free ions to move the electrons
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Define electrolysis.
The passage of electricity through a substance when molten/aqueous so that the substance splits up into simpler substances
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Give an example of electrolysis?
Lead bromide decomposing into Lead and Bromine
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Why can solid Lead Bromine not conduct electricity?
The ions are tightly held and are not free to move towards the electrodes
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Other cards in this set

Card 2

Front

What are both the electrodes and the electrodes attached to them?

Back

Cathode = NEGATIVE, Anode = POSITIVE

Card 3

Front

What are the general facts about electrolysis?

Back

Preview of the front of card 3

Card 4

Front

Why do covalent substances not conduct?

Back

Preview of the front of card 4

Card 5

Front

Why can only ionic compounds conduct electricity once molten?

Back

Preview of the front of card 5
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