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GCSE > 5.5 ELECTROLYSIS > Flashcards

5.5 ELECTROLYSIS Flashcards

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1
Q

Define electrolysis

A

The breaking down of a compound using electricity

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2
Q

What properties must electrodes have

A

Inert and a soild that conducts electricity

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3
Q

What properties must electrodes have

A

Inert and a soild that conducts electricity

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4
Q

What are common electrodes

A

Graphite (cheap) or platinum (expensive)

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5
Q

What is the positive electrode

A

Anode

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6
Q

What is the negative electrode

A

Cathode

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7
Q

What is an electrolyte

A

The substance that is being broken down

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8
Q

What is attracted to the cathode

A

Cations

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9
Q

What is attracted to the anode

A

Anions

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10
Q

How does electrolysis happen in molten solutions

A

The anions move to the anode, and cations to the cathode

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11
Q

What elements is made at the anode of aqueous electrolysis

A
  • The halide ion
  • Oxygen + 2Water +4e- (from 4OH-)
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12
Q

What elements are made at the cathode of aqueous electrolysis

A
  • Metal that is less reactive than hydrogen
  • Hydrogen gas
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13
Q
A
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14
Q

Define electrolysis

A

The breaking down of a compound using electricity

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GCSE (71 decks)

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