States Of Matter/ Electrolysis

Question 1

Chemical changes

Answer 1

Not easily reversed
New substances made

Question 2

Physical changes

Answer 2

Easily reversible
No new substances made

Question 3

The freezing point of water is 0°C.
Describe how the movement and arrangement of water particles changes when water is cooled from 10°C to –10°C.

Answer 3

-get closer together
-they slow down
-lose energy

Question 4

Equipment used to convert solid wax into liquid

Answer 4

-Bunsen burner
-test tube

Question 5

Some liquid is left in a warm room.
After a few days no liquid can be seen.
Give the name of the process that has occurred.

Answer 5

Evaporation

Question 6

What is the name of the change of state when a liquid changes into a solid?

Answer 6

Freezing

Question 7

Electrolysis

Answer 7

The splitting of a substance with electricity

Question 8

Electrolyte

Answer 8

Solution containing ions

Question 9

Electrodes

Answer 9

Rods which conduct electricity

Question 10

Cation

Answer 10

Positive ion

Question 11

Anion

Answer 11

Negative ion

Question 12

Cathode

Answer 12

Negative electrode

Question 13

Anode

Answer 13

Positive electrode