Changing state: gas to liquid
I can observe water change from gas state to liquid state when it is cooled.
Changing state: gas to liquid
I can observe water change from gas state to liquid state when it is cooled.
Lesson details
Key learning points
- 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.
Common misconception
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.
Keywords
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.
Equipment
cold glasses containing cold water and ice, mirrors
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
6 Questions
takes the shape of the whole of a container
takes the shape of the bottom of a container
Exit quiz
6 Questions
can flow and is visible
can flow and is invisible
