Chemistry - Electrolysis

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What is electrolysis?
The process in which ionic substances are decomposed into simpler substances when an electric current is passed through them.
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What must occur for electrolysis to happen?
Ions must be free to move.
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When is possible for the ions to be free to move?
When the ionic substance is dissolved in water or when melted.
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In electrolysis what happens when the positively charged ions move to the negative electrode?
They recieve electrons and are reduced.
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In electrolysis what happens when the negatively charged ions move to the posotive electrode?
They lose electrons and are oxidised.
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What is the electrolyte?
The upstance that is broken down,
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In electroplating what is the negative electrode?
Object that is is electroplated.
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In electroplating what is the posotive electrode?
Metal you want to coat the object with.
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In electroplating what is the electrolyte?
Solution of coating metal.
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When aluminium is purified using electrolysis what does aluminium form?
The negative electrode
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When aluminium is purified usinh electrolyis what does oxygen for?
The posotive electrod.
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Complete the equation. Oxygen + Carbon =
Carbon Dioxide
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Card 2

Front

What must occur for electrolysis to happen?

Back

Ions must be free to move.

Card 3

Front

When is possible for the ions to be free to move?

Back

Preview of the front of card 3

Card 4

Front

In electrolysis what happens when the positively charged ions move to the negative electrode?

Back

Preview of the front of card 4

Card 5

Front

In electrolysis what happens when the negatively charged ions move to the posotive electrode?

Back

Preview of the front of card 5
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