Electrochemistry

Question 1

Galvanic cell

Answer 1

A cell in which chemical energy is converted into electrical energy

Question 2

Electrolytic cell

Answer 2

A cell in which electrical energy is converted into chemical energy

Question 3

Define oxidation and reduction in terms of electron (e-) transfer

Answer 3

Oxidation is a loss of electrons. Reduction is a gain of electrons

Question 4

Define oxidation and reduction in terms of oxidation numbers

Answer 4

Oxidation: An increase in oxidation number
Reduction: A decrease in oxidation number

Question 5

Define an anode and a cathode in terms of oxidation and reduction

Answer 5

Anode:The electrode where oxidation takes place
Cathode: The electrode where reduction takes place.

Question 6

Define an oxidising agent and a reducing agent in terms of oxidation and reduction

Answer 6

Oxidising agent: A substance that is reduced/gains electrons
Reducing agent: A substance that is oxidised/loses electrons

Question 7

Electrolyte

Answer 7

As a substance of which the aqueous solution contains ions OR a substance that dissolves in water to give a solution that conducts electricity

Question 8

Electrolysis

Answer 8

The chemical process in which electrical energy is converted to chemical energy OR the use of electrical energy to produce a chemical change