Digital file -Quick Questions + Answers : Year 7 & 8 Changes of state

This quick question page 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 find short, focused questions designed to help you:

• Recall 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 relate to the properties of solids, liquids, and gases

Use this page to test your understanding quickly and effectively. Answers are provided at the back so you can check your progress, correct mistakes, and gain confidence in explaining changes of state using the particle model.