electrolysis - SC10

Question 1

what is electrolysis?

Answer 1

The breaking down of compounds/substances using a direct electrical current

Question 2

in what states can electrolysis occur to ionic compounds

Answer 2

molten or dissolved in water

Question 3

what is the positive electrode called?

Answer 3

anode

Question 4

what is the negative electrode called

Answer 4

cathode

Question 5

what are electrodes in electrolysis usually made out of

Answer 5

graphite

Question 6

What does CCR mean?

Answer 6

Cations go to the Cathode to be Reduced

Question 7

what does AAO mean?

Answer 7

Anions go to the Anode to be Oxidised

Question 8

What does RIG mean?

Answer 8

Reduction = electrons gained on the left side

Question 9

what does OIL mean?

Answer 9

Oxidisation = electrons lost on the right side

Question 10

what is electrolyte?

Answer 10

ionic substance with free moving ions to conduct electricity

Question 11

how is reduction shown in a half equation?

Answer 11

ion + electrons (left) –> element (right)

Question 12

how is oxidation shown in a half equation?

Answer 12

ion (left) —> element + electrons (right)

Question 13

are positive or negative ions attracted to the cathode?

Answer 13

positive ions

Question 14

are positive or negative ions attracted to the anode?

Answer 14

negative ions

Question 15

How is electrolysis set up?

Answer 15

2 electrodes in a solution of electrolyte with electric current running between the 2, connected to a power pack

Question 16

explain why ions do not conduct electricity as a solid

Answer 16

because the electrons cannot flow through the solid