Learning objectives
Knowledge
- To demonstrate reversible changes.
Working scientifically
- To write a prediction using prior knowledge of the states of matter.
Success criteria
Knowledge
- I can define the term reversible change.
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National curriculum
Science
Properties and changes
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Cross-curricular links
British values
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Before the lesson
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Lesson plan
Recap and recall
Arrange the class into groups of three and hand out three sticky notes to each group. Challenge the children to write the names of the three states of matter (solid, liquid and gas) with one name on each sticky note. Hand out the Knowledge organiser to pupils requiring support (see Adaptive teaching). Ask each group…
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Adaptive teaching
Pupils needing extra support
Could use the Activity: Predicting reversible changes: support version to write their predictions; could use the Knowledge organiser to help them with the Recap and recall activity and with writing their predictions.
Pupils working at greater depth
Should heat more than three materials (including at least one solid and one liquid) and compare and describe the differences between each of their materials; should answer the open-ended question of what would happen if changes of state were not reversible (answers may include reference to the water cycle); could choose an extension activity relating to properties or reversible changes from the Resource: Stretch and challenge: Properties and changes.
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Assessing progress and understanding
Pupils with secure understanding indicated by: defining the term
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Knowledge outcomes
- I can define the term reversible change as when a material undergoes a change that can be easily undone to return the material to its original form.
- I can identify that sieving can be used to reverse the formation of a mixture of different-sized solids.
- I can identify that filtering can reverse the formation of a mixture of a liquid and a solid by separation.
- I can identify that evaporating can be used to reverse the formation of a solution.
- I can describe how heating can be used to reverse the processes of freezing and condensing.
- I can describe how cooling can be used to reverse the processes of melting and evaporating.
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Vocabulary definitions
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change of state
When a materials changes from one state of matter (solid, liquid and gas) to another, often due to a change in temperature.
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condensing
The process of a gas changing into a liquid.
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Maintained by: Kapow Primary team
Last update: 21st October, 2024
