Free interactive practice
Play State Change Lab
Name melting, freezing, evaporation and condensation; compare heating/cooling evidence and distinguish reversible state changes. Saving is off unless you choose it.
Choose examples of reversible state changes and distinguish melting from dissolving. The salt example can also be reversed; burning and baking provide contrasting examples. Practical testing is not assessed.
Year 4 · Science
Reversible changes in Year 4 Science
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Focus on explaining melting and freezing as reversible changes of state. Open support for “Know How Some Materials Change State”, then explain the idea in your own words.
Year 4 learners practise explaining melting and freezing as reversible changes of state.
The activities include Know How Some Materials Change State, Learn About Materials Changing State, Study Physical Changes of State, and related practice. The checked support below includes video, teaching, interactive, lesson. Open a resource in its provider's website and choose the format that best helps the learner explain the idea independently.
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Watch it explained
watch a video explanation
Changing state: solid to liquid
Best for: a clear explanation before you practise
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Learn it properly
lessons and teaching pages
Science: States of Matter Year 4 Knowledge Organiser
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Practise it
questions and activities to try
Changing state: solid to liquid worksheet and quiz downloads
Best for: active questions with immediate feedback
Year 4 Changing States of Matter Interactive Escape the Room Game
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