Electrolysis

Question 1

What is electrolysis?

Answer 1

Electrolysis is using an electric current to break down to break down an ionic compound.

Question 2

True or False:

Ionic compounds can conduct electricity when solid because the ions are fixed in lattice and can’t move.

Answer 2

False:

Ionic compounds CAN’T conduct electricity when solid because the ions are fixed in lattice and can’t move.

Question 3

True or False:

Ionic compounds can conduct electricity when molten/aqueous because the ions are free to move and carry charge.

Answer 3

True

Question 4

What is a cathode?

Answer 4

A negatively charged electrode by which electrons enter an electrical device.

Question 5

What is an anode?

Answer 5

The positively charged electrode by which the electrons leave an electrical device.

Question 6

What is the charge for elements in Group 2?

Answer 6

+2

Question 7

What is the charge for elements in Group 7?

Answer 7

-1

Question 8

What is the charge for an element in Group 4?

Answer 8

+4 / -4

Question 9

Fill in the Gap:

The positive ions …. electrons.

Answer 9

Gain

Question 10

Fill in the Gap:

Answer 10

The negative ions …. electrons.

Question 11

What are all ions present in an aqueous sodium chloride?

Answer 11

H+, Cl-, Na+, OH-

Question 12

What are all the ions present in a molten zinc oxide?

Answer 12

Zn2+ 0-2 which makes ZnO

Question 13

Fill in the Gaps:

1. ……… attract
2. Equal’s …..

Answer 13

1. Opposites
2. Repel