Changes of state

Question 1

What is the change in state from a solid to a liquid called?

Answer 1

Melting

Question 2

What is the change in state from a liquid to a solid called?

Answer 2

Freezing

Question 3

What is the change in state from a liquid to a gas called?

Answer 3

Evaporation

Question 4

What is the change in state from a gas to a liquid called?

Answer 4

Condensation

Question 5

What is the change in state from a gas to a solid called?

Answer 5

Deposition

Question 6

What is the change in state from a solid to a gas called?

Answer 6

Sublimation

Question 7

What is latent heat?

Answer 7

The energy transferred to a substance when it changes state.

Question 8

What is conservation of mass?

Answer 8

When a substance changes state, the number of particles stays the same- so the mass is unchanged.

Question 9

What is a melting point?

Answer 9

The temperature that a pure substance melts (the same temperature that it solidifies).

Question 10

What is a boiling point?

Answer 10

The temperature at which a substance boils (the same temperature that it condenses).

Question 11

Which section of a graph shows the melting/boiling point of a substance?

Answer 11

The flat section.