Year 7 · Science

Physical Changes

Year 7 learners practise changes of state and diffusion explained.

The activities include Describe and Explain Diffusion, Describe Changes of State, Explain Brownian Motion, and related practice. The checked support below includes teach, video, teaching, worksheet. Open a resource in its provider's website and choose the format that best helps the learner explain the idea independently.

Activities covered

Describe and Explain Diffusion
Describe Changes of State
Explain Brownian Motion
Explain Changes of State
Explain the Changes of State of Water
Study the Similarities and Differences Between Solids, Liquids, and Gases
Understand Changes of State Between Solids, Liquids and Gases

Checked learning resources

KS3 States of Matter and Separating Mixtures: The Particle Model Lesson Pack

Twinkl · Teach · Account may be required

This KS3 Chemistry lesson pack compares solids, liquids and gases through particle arrangement, spacing, movement, density and compressibility, with teaching materials and independent practice.
Oak lesson video: Changes Of State Energy And Evaporation

Oak National Academy · Video · Opens on the provider website

KS3 science video lesson. I can describe and explain what happens when a substance changes state and how evaporation occurs. States of matter can have differing amounts of energy. Solid states have the least energy, gas
Oak lesson video: Diffusion

Oak National Academy · Video · Opens on the provider website

KS3 science video lesson. I can explain how particles spread through a fluid. Brownian motion is the random motion of particles suspended in a medium. Particles of a substance released into a fluid (a gas or liquid) move
Changes of state

BBC Bitesize · Video · Opens on the provider website

KS3 video explaining particle arrangements and reversible changes of state through melting and freezing, evaporation and condensation.
Oak lesson slides: Diffusion

Oak National Academy · Teaching · Opens on the provider website

KS3 science lesson. I can explain how particles spread through a fluid. Brownian motion is the random motion of particles suspended in a medium. Particles of a substance released into a fluid (a gas or liquid) move aroun
Oak worksheet: Diffusion

Oak National Academy · Worksheet · Opens on the provider website

KS3 science lesson. I can explain how particles spread through a fluid. Brownian motion is the random motion of particles suspended in a medium. Particles of a substance released into a fluid (a gas or liquid) move aroun
KS3 States of Matter and Separating Mixtures: Changing State Lesson Pack

Twinkl · Lesson · Account may be required

KS3 lesson pack explaining reversible changes of state, particle arrangements, heating and cooling, and melting and boiling points.
Brownian Motion: Free Notes and Practice

Seneca Learning · Lesson · Opens on the provider website

KS3 explanation and interactive practice use Robert Brown’s pollen-in-water observation to define random Brownian motion and explain collisions in fluids, smoke particles and temperature effects.