Changing state: gas to liquid | Science | Quizalize & Oak National Academy

Starter quiz

Which of these are not states of matter?
- solid
- clay ✓
- oil ✓
- liquid
- gas
Match the state to the characteristics.
- gas
  
  ⇔
  
  takes the shape of the whole of a container ✓
- liquid
  
  ⇔
  
  takes the shape of the bottom of a container ✓
Materials in the gas state are often __________ and have no fixed shape or volume.
- blue
- green
- invisible ✓
- smoky
How could you make a liquid change to a gas more quickly?
- heat it ✓
- cool it
- shake it
- stir it
The process when a liquid changes to a gas is called ...
- 'evaporation' ✓
Materials in which states can flow?
- solid
- liquid ✓
- gas ✓

When water vapour is cooled, what state does it change into?
- liquid state ✓
- solid state
- gas state
What is the name of the process in which water changes from the gas to the liquid state?
- 'condensation' ✓
Match the state of water to the statement.
- liquid water
  
  ⇔
  
  can flow and is visible ✓
- water vapour
  
  ⇔
  
  can flow and is invisible ✓
When condensation occurs, what can you observe?
- You can see the gas disappear.
- You can see the liquid water form. ✓
- You can see the gas disappear and the liquid form.
What should we change in order to change the state of a material?
- container
- what it is made of
- name
- temperature ✓
To make a gas condense, you should ______ it.
- 'cool' ✓

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Water vapour (water in the gas state) turns into a water in the liquid state when it is cooled.
The process in which water changes from the gas to the liquid state is called condensation.
We can change the state of a gas to a liquid by cooling.
Water can be observed changing from gas state to liquid state when cooled.

Water cannot exist in a gas form. Condensation is the same as rain or only occurs during cold weather. Dew is formed by liquid escaping from plants.

Teaching slides explain that water can exist as gaseous water vapour and how condensation forms.

Gas - A gas can flow, has no fixed volume and takes the shape of the whole of its container.
State - Materials can exist in three common states of matter: solid, liquid and gas.
Liquid - A liquid can flow, has a fixed volume and takes the shape of the bottom of its container.
Water vapour - Water is called water vapour when it is in the gas state.
Condensation - Condensation is the change of state where a gas changes into a liquid.