Digital file: Notes Year 7 & 8: Changes of State

This booklet is based on the Science Programmes of Study: Key Stage 3, National Curriculum in England. It focuses on changes of state and how they can be explained using the particle model.

Inside, you’ll learn how to:

• Understand how particles behave during melting, freezing, evaporation, condensation, and sublimation

• Describe how particle arrangement and movement change during each change of state

• Explain how these changes account for the properties of solids, liquids, and gases

This booklet will help you build a clear understanding of how and why matter changes state, and how the particle model can be used to explain these processes in everyday situations.