Chapter 9.2

Question 1

What does the salt bridge do?

Answer 1

Provides an electrical connection between the two half-cells in a voltaic cell to complete the circuit, allowing ions to flow into our out of the half-cells to balance out the charges in the half-cells

Question 2

What does a salt bridge usually contain?

Answer 2

A concentrated solution of an ionic salt such as KCl

Question 3

Anode

Answer 3

The electrode at which oxidation occurs

Question 4

What is the negative electrode in a voltaic cell?

Answer 4

Anode

Question 5

Cathode

Answer 5

The electrode at which reduction occurs

Question 6

What is the positive electrode in a voltaic cell?

Answer 6

Cathode

Question 7

Electrolysis

Answer 7

The breaking down of a substance by the passage of electricity through it

Question 8

Electrolyte

Answer 8

A solution or molten compound that will conduct electricity, with decomposition at the electrodes as it does so

Question 9

What do electrolytes contain?

Answer 9

Ions that are free to move towards the electrodes in electrolysis

Question 10

Why don’t ionic solids conduct electricity when solid?

Answer 10

The ions are held tightly in the lattice structure and are therefore not free to move