Science·Matter & Materials·conceptual
Reversible Changes
Demonstrate that dissolving, mixing, and changes of state are reversible changes where no new materials are formed
Suggested ages 9–10
Learning journey
Your child is exploring how materials behave and change — investigating which substances dissolve in water, learning to separate mixtures, and distinguishing between changes that can be reversed and those that create entirely new materials.
Evidence of understanding
- Define a reversible change as one where the original materials can be recovered
- Give at least three examples of reversible changes: melting, freezing, dissolving, evaporating
- Explain how to reverse each example (e.g. freeze melted chocolate, evaporate a solution)
Assessment prompt
Can Reversible Changes explain that melting chocolate or dissolving sugar can be undone — you can get the original material back — because these are reversible changes?
Standards alignment
Y5.Sci.PCM.5GB · uk-nc-2013
Reversible changes
The national curriculum in England: Key stages 1 and 2 framework document · Key Stage 2