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Chemistry > C6 - Electrolysis > Flashcards

C6 - Electrolysis Flashcards

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1
Q

What does the word Electrolysis actually mean?

A

Breaking down using Electricity.

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2
Q

In Electrolysis, you use an Electric _______ to break down an Ionic ________.

A

Current…Compound…

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3
Q

What is the Compound called that is broken down using Electrolysis?

A

The Electrolyte.

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4
Q

To set up an Electrical Circuit for Electrolysis, you dip two _________ into the __________ with a gap between them.

A

Electrodes…Electrolyte…

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5
Q

What are Electrodes?

A

Conducting Rods.

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6
Q

One of the Electrodes is connected to the Positive Terminal called the _____.

A

Anode.

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7
Q

One of the Electrodes is connected to the Negative Terminal is called the ________.

A

Cathode.

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8
Q

What are Electrodes usually made up of?

A

Graphite.

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9
Q

The Electrodes do not react with the ___________ or any product made in ____________.

A

Electrolyte…Electrolysis…

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10
Q

During Electrolysis, Positively Charged ____ move to the Cathode (Negative _________) and Negatively Charged ____ move to the Anode (________ Electrodes) because opposites attract.

A

Ions…Electrode…Ions…Positive…

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11
Q

When Ions reach the Electrodes, they lose charge and become ________.

A

Elements.

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12
Q

What happens at the Electrode?

A

Gases are given off.

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13
Q

Why do Ionic Compounds not conduct Electricity when they are Solid?

A

Because the Ions are fixed in their position and can’t move.

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14
Q

Ionic Substances have very ____ Melting Points.

A

High.

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15
Q

Some Ionic Substances are able to Dissolve in _____.

A

Water.

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16
Q

Covalent Compounds cannot usually be Electrolysed unless they react in ______ to form ____.

A

Water…Ions…

17
Q

What is another word for Water in Electrolysis?

A

Aqueous Solution (Aq).

18
Q

At the Electrode, Negatively Charged ____ Lose __________ to become Neutral Atoms.

A

Ions…Electrons…

19
Q

At the Electrode, Positively ________ Ions ____ Electrons to become Neutral Atoms.

A

Charged…Gain…

20
Q

Gaining Electrons is called __________.

A

Reduction.

21
Q

Losing Electrons is called __________.

A

Oxidation.

22
Q

What does OILRIG stand for?

A

Oxidation Is Loss, Reduction Is Gain.

23
Q

Electrolysis is more Complex in ________ Solutions (Aq), because Ions form by Water.

A

Aqueous.

24
Q

When Electrolysis happens in an Aqueous Solution (__), either Hydrogen or the Metal is produced at the Cathode, and at the _____ you get either Oxygen or a Halogen.

A

(Aq)…Anode…

25
Q

Three Examples of the uses of Aluminium?

A

Pans, Cooking Foil and Drink Cans.

26
Q

Is Aluminium a Reactive Metal?

A

Yes.

27
Q

You get Aluminium _____ from the Ore called Bauxite.

A

Oxide.

28
Q

The Electrolysis of Aluminium Oxide (_______) requires a lot of _______.

A

Bauxite…Energy…

29
Q

Aluminium Oxide has a ____ Melting Point.

A

High.

30
Q

What do Chemists mix Aluminium Oxide with?

A

Molten Cryolite.

31
Q

During the Electrolysis of Aluminium Oxide, Aluminium forms at the _______, and _______ forms at the Anode.

A

Cathode…Oxygen…

32
Q

What is Brine?

A

A Concentrated Sodium Chloride Solution.

33
Q

The Electrolysis of Brine is a very important _____________ process.

A

Industrial.

34
Q

What are the Three useful products you get when Brine is Electrolysed?

A

Chlorine Gas, Hydrogen Gas and Sodium Hydroxide.

35
Q

What is Sodium Hydroxide, an Acid or Alkali?

A

Alkali.

36
Q

What is produced at the Cathode during the Electrolysis of Aqueous Solution?

A

Hydrogen.

37
Q

What is produced at the Anode during the Electrolysis of Aqueous Solution?

A

Chlorine.

38
Q

How can you test the Solution at the Cathode/Anode?

A

Using an Acid/Base Indicator.

Chemistry (13 decks)

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