TheLearnDenYear 7 · Science
Changes Of State: Particle Model
Year 7 learners practise melting freezing boiling and condensing explained.
The activities include Compare Chemical and Physical Changes, Recognise Changes of State: Freezing and Condensing, Recognise Changes of State: Melting and Boiling, 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.
Understand the key idea
Melting, freezing, boiling and condensing are physical changes. The substance keeps the same particles, but energy transfer changes how quickly those particles move and how strongly they are held together.
Common mix-up
Particles do not disappear or become a new substance during a change of state.
Try this first
- Name the starting and finishing states.
- Decide whether energy is transferred into or out of the substance.
- Describe how particle movement, spacing and attraction change.
Ask: What stays the same when ice melts, and what changes?
Activities covered
- Compare Chemical and Physical Changes
- Recognise Changes of State: Freezing and Condensing
- Recognise Changes of State: Melting and Boiling
- Understand Changes of State and Forces of Attraction
- Understand The Movement of Particles in Changes of State
Checked learning resources
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What is a chemical reaction?
BBC Bitesize · Video · Opens on the provider website
KS3 video compares physical changes with chemical reactions: physical changes such as melting retain the same substance and are reversible, while chemical reactions rearrange atoms into new substances and are generally i
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Solid, liquid, gas states and changes of state
Oak National Academy · Teaching · Opens on the provider website
Current Oak teacher unit support for Changes Of State: Particle Model; selected after reading the full activity context: In this worksheet, students will learn to recognise the changes involved in freezing and condensing
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Solids, liquids and gases - KS3 Physics
BBC Bitesize · Teaching · Opens on the provider website
BBC Bitesize corpus page for Changes Of State: Particle Model; supports the full activity context: In this worksheet, students will learn to recognise the changes involved in freezing and condensing.
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Melting Particle Model worksheet and quiz downloads
Oak National Academy · Interactive · Opens on the provider website
Free worksheet, starter quiz and exit quiz downloads for the Oak lesson Melting Particle Model.
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Solid, liquid, gas states and changes of state
Oak National Academy · Lesson · Opens on the provider website
Year 7 Science resource matched to melting freezing boiling and condensing explained.
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Melting Particle Model
Oak National Academy · Video · Opens on the provider website
Oak lesson video titled Melting Particle Model.
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Oak worksheet: Characteristics Of Chemical Reactions
Oak National Academy · Worksheet · Opens on the provider website
KS3 science lesson. I can describe some of the changes that indicate a chemical reaction is taking place. Characteristics of chemical reactions include changes in colour, bubbling, or a change of temperature. Bubbles app
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Physical or Chemical Change Match and Draw
Twinkl · Worksheet · Account may be required
KS3 practice asks learners to classify and match examples of physical changes, including changes of state, and chemical changes, including reactions that form new substances.