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.
Particles explain the states粒子与物质状态
See how the same particles behave in a solid, a liquid and a gas.
Complete this core task when your teacher assigns the topic. Use the short recall cards before class.按老师指定的知识点完成网页预习，周内用提示卡回忆；不是整章预习。
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. Print the relevant pages and cut out the cards you need.
Download hint cards DOCX ↓