English National Curriculum Science

1. Describe the states of matter using a particle model

Mission Objectives

Describe the particle model

Use models to explain how the particles are arranged in solids, liquids and gases

Explain the properties of the different states of matter (solid, liquid, and gas) in terms of the particle model

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KS3-02-01 Handout KS3-02-01 Handout PDF

Keywords

Words and meanings to learn

states of matter

the three forms in which a substance can exist, i.e. solid, liquid and gas

solid

a state of matter in which all particles are closely packed together in a regular structure

liquid

the phase of matter between solid and gas, in which there is some free movement of particles

gas

a state of matter in which the particles have no ordered structure and occupy the entire container

property

the quality of a substance or material that describes its appearance or how it behaves

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This lesson has been written by

Alison Green

Alison is a qualified secondary chemistry teacher and former scientist, seamlessly blending her background in scientific development with a passion for education. With over 15 years of teaching experience across state and independent schools, including most recently at Stafford Grammar School, Alison specialises in equipping students with the tools to excel in Chemistry at KS3, GCSE and A-levels. Her transition to online education, backed by a Master’s degree, has spurred her transition to freelance content creation and chemistry tutoring, tapping into a wealth of examining experience spanning over ten years to steer students towards their desired academic and professional paths.

When she's not shaping young minds, Alison unwinds by exploring the natural beauty of the Shropshire hills and embracing the tranquillity of Tai Chi, mirroring the balance she instils in her educational endeavours.

Required Resources

Resources: Sticky notes and mini whiteboards. Materials for the Mission Assignment, such as modelling clay, cocktail sticks, polystyrene balls, beads.

Support Handout: Page 1 of the handout; a sheet to recap particle model in solids, liquids and gases.

Core Handout: Pages 2 and 3 of the handout; space for the students to draw their models and answer the questions. 

Challenge Handout: A challenge question is included on page 3. 

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