Electrolysis

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What do we call the charged particles in an electrolysis solution?
Ions
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What happens to the ions in an ionic compound when it melts or dissolves in water?
They become free to move
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Are metal ions positively charged or negatively charged?
Positively charged
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Which electrode are metal ions attracted to?
The cathode (negative)
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Which charged particles move in the electrolyte?
Ions move through the electrolyte
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What is formed when we electrolyse a solution of copper chloride?
Copper and chlorine
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Write the half equation that describes what happens to Cu2+ ions at the cathode
Cu2+ 2e- = Cu
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When purifying copper by electrolysis, which electrode is made of impure copper?
The anode (positive)
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What is given off at the cathode when we electrolyse potassium chloride solution?
Hydrogen gas
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What is the chemical name for common salt?
Sodium Chloride
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When we electrolyse brine, what forms at the anode?
Chlorine gas
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When we electrolyse brine, what forms at the cathode?
Hydrogen gas
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Which important alkali do we get from the electrolysis of brine?
Sodium hydroxide solution
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Give 2 uses of sodium hydroxide
Detergents and ceramincs
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Card 2

Front

What happens to the ions in an ionic compound when it melts or dissolves in water?

Back

They become free to move

Card 3

Front

Are metal ions positively charged or negatively charged?

Back

Preview of the front of card 3

Card 4

Front

Which electrode are metal ions attracted to?

Back

Preview of the front of card 4

Card 5

Front

Which charged particles move in the electrolyte?

Back

Preview of the front of card 5
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