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

Starter quiz

Which of these are states of matter?
- liquid ✓
- air
- water
- solid ✓
- gas ✓
Match the state to the characteristics.
- solid
  
  ⇔
  
  does not take the shape of its container ✓
- liquid
  
  ⇔
  
  takes the shape of the bottom of its container ✓
What name is given to the temperature at which a solid changes to a liquid?
- 'melting temperature' ✓
Different materials have __________ melting points.
- the same
- different ✓
- identical
Materials in the ______ state are often invisible and have no fixed shape or volume.
- 'gas' ✓
Match the process to the action that causes it to happen.
- melting
  
  ⇔
  
  heat ice (solid sate water) ✓
- freezing
  
  ⇔
  
  cool liquid water ✓

Water in the gas state is called water ______.
- 'vapour' ✓
Which scientific skill would you be using if you watched water changing state?
- prediction
- observation ✓
- planning
- evaluating
What would you need to change to cause a liquid to become a gas?
- container
- colour
- temperature ✓
In which state can materials flow?
- solid
- liquid ✓
- gas ✓
Which of these statements are true about water vapour?
- It is a gas. ✓
- It is a liquid.
- It can flow. ✓
What is the name of the process in which a liquid changes to a gas?
- melting
- evaporation ✓
- gassing

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Water in the liquid state can change into water in the gas state (water vapour).
In its gas state, water is invisible, can flow, has no fixed volume and takes the shape of the whole of its container.
The process in which a liquid changes to a gas is called evaporation.
Water can be observed changing from liquid to gas.
We can change the state of a liquid to a gas by heating.

Water cannot exist in a gas form.

Teaching slides explain that water can exist as gaseous water vapour and the process of evaporation.

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