Year 7 / Grade 7 • Daily Science Drill
Particles and Matter
Use particle models to explain states and changes.
8 questions • 200-question rotating bank • 25 different sets before a full cycle repeats
8Questions
200Question bank
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📖 60-second Quick Read
Particles and Matter
Particle spacing and movement differ among solids, liquids and gases. Heating generally increases particle motion.
What to remember
- Solid particles remain in fixed relative positions but vibrate.
- Liquid particles can move past one another.
- Gas particles are widely spaced and move freely.
- Heating increases average particle kinetic energy.
- State changes are physical changes.
Key words
particle model — model of matter as particles
solid — closely packed particles with fixed arrangement
liquid — particles close but able to flow
gas — widely spaced moving particles
state change — change between solid/liquid/gas
How to use this drill: review the short notes when learning, then close them on later attempts and practise from memory. The rotating bank delays a full set repeat for 25 attempts on the same browser.