Last Updated Sep 26, 2025

Changes of State Simplified Revision Notes for GCSE AQA Physics Combined Science

Revision notes with simplified explanations to understand Changes of State quickly and effectively.

Learn about Changes of State & the Particle Model for your GCSE Physics Combined Science Exam. This Revision Note includes a summary of Changes of State & the Particle Model for easy recall in your Physics Combined Science exam

215+ students studying

Changes of State & the Particle Model Quizzes

Test your knowledge with quizzes.

Changes of State & the Particle Model Flashcards

Practice with bite-sized questions.

Changes of State & the Particle Model Questions by Topic

Prepare with real exam question.

Print Free PDF

3.1.4 Changes of State

infoNote

Mass is conserved during a change of state. If 20g of liquid evaporates, the gas produced will also weigh 20g

infoNote

These physical changes are reversible, and not chemical changes They are not chemical because the material retains its original properties when reversed

Graph of Changes of State

• Temperature vs. Time:
• Solid: Heating up to the melting point
• Melting: Transition from solid to liquid
• Liquid: Heating up to boiling point
• Boiling: Transition from liquid to gas
• Gas: Heating up further

Evaporation

infoNote

The liquid turns into a gas, but only on the surface of the liquid. Only the particles on the surface have enough energy to turn into a gas.

Table of Changes of State Processes

Process	From State	To State	Description
Melting	Solid	Liquid	Solid to Liquid
Freezing	Liquid	Solid	Liquid to Solid
Boiling	Liquid	Gas	Liquid to Gas
Condensation	Gas	Liquid	Gas to Liquid
Sublimation	Solid	Gas	Solid to Gas
Deposition	Gas	Solid	Gas to Solid

Only available for registered users.

Sign up now to view the full note, or log in if you already have an account!

Sign up with GoogleSign up with Apple

500K+ Students Use These Powerful Tools to Master Changes of State For their GCSE Exams.

Enhance your understanding with flashcards, quizzes, and exams—designed to help you grasp key concepts, reinforce learning, and master any topic with confidence!

Other Revision Notes related to Changes of State you should explore

Discover More Revision Notes Related to Changes of State to Deepen Your Understanding and Improve Your Mastery

96%

114 rated

Changes of State & the Particle Model

Density

388+ studying

189KViews

View Note

96%

114 rated

Changes of State & the Particle Model

Solids, Liquids & Gases

392+ studying

198KViews

View Note

96%

114 rated

Changes of State & the Particle Model

Required Practical: Determining Density

289+ studying

183KViews

View Note