How Materials Change State
Explain melting, freezing, boiling, condensing, and sublimation using the particle model, interpreting heating and cooling curves to identify melting and boiling points
Teaching approaches
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1 approach
If your child was heating a block of ice in a pan and drew a graph of temperature over time, could they explain why the line goes flat at certain points — and what's happening to the particles when it does?
Explain melting, freezing, boiling, condensing, and sublimation using the particle model, interpreting heating and cooling curves to identify melting and boiling points
Learning resources
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3 before · 1 after
Before
This concept
Check understanding
- Describes what happens to particles during each change of state
- Reads a heating/cooling curve and identifies the melting point and boiling point from the flat regions
- Explains why temperature stays constant during a change of state
- Distinguishes between evaporation (from surface, any temperature) and boiling (throughout liquid, at boiling point)
“If your child was heating a block of ice in a pan and drew a graph of temperature over time, could they explain why the line goes flat at certain points — and what's happening to the particles when it does?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- Matter & Materials
- Age range
- Ages 11–12
Standards