States of Matter
Review the essentials, explore the particle model and check your understanding.
Use these short pages after your teacher’s explanation. Keep your worksheet for guided notes and written practice.
Choose a topic
Review · Practise · ExploreParticles and evidence
Use observations to explain random particle motion and diffusion.
States and changes of state
Describe the three states and use melting and boiling points to predict a state.
Explaining changes with particles
Explain properties and state changes using particles, and interpret a heating curve.
Gas pressure and Brownian motion
Explain gas pressure under controlled conditions and distinguish Brownian motion from molecular motion.
Diffusion and chapter review
Explain diffusion-rate differences and apply the particle model across the chapter.
Your printable worksheet
Guided notes and written activities for all five lessons.
Download worksheet ↓Cambridge IGCSE Chemistry 0620 Extended · 2026–2028
← Course overviewPrintable hint cards
Use a card when you need a starting step, then return to the question. Chapter 1 cards are on pages 2 of the collection. Each printable page contains three cards.
Download hint cards DOCX ↓