Revision matter & measurements

The amount of mass in a specific volume

• density
• weight
• matter
• state

What happens to molecules when the temperature drops or lowers?

• The molecules get closer together

• The molecules start moving faster.

• The molecules stop moving.

• The molecules become smaller.

What takes place when a solid changes to a liquid?

• condensation
• freezing
• melting
• evaporation

Which state of matter has particles that are tightly packed?

• liquid
• gas
• solid

In which state of matter are molecules moving the fastest?

• solid 
• liquid
• gas
• the molecules move equally fast in all states of matter

What state of matter has particles free to move past other particles but still have attraction?

• solid
• plasma
• liquid
• gas

What state of matter has particles that vibrate in place?

• solid
• liquid
• gas
• plasma

Change of state of matter happens only when

• heat is absorbed

• heat is rejected

• heat is absorbed or rejected

• temperature is constant

The reverse process of fusion

• melting

• fission

• freezing

• condensation

vaporisation is the process of

• heating liquid at a fixed temperature

• change of liquid to gas when heated

• boiling point

• evaporation