Across
- 1. SI unit of energy
- 5. motion Random movement of tiny particles caused by collisions with molecules
- 6. When particles bump into each other or container walls
- 9. Measure of the average kinetic energy of particles
- 11. of matter The physical forms in which substances exist
- 13. change The process of changing between solid, liquid, and gas
- 14. Amount of space occupied by a substance
- 16. Rapid vaporisation throughout a liquid
- 17. Change of state from liquid to solid
Down
- 2. Slow vaporisation from the surface of a liquid
- 3. zero Lowest possible temperature where particle motion stops
- 4. law Gas law stating pressure is inversely proportional to volume
- 7. Common temperature scale used in daily life
- 8. Force acting per unit area
- 10. Change of state from solid to liquid
- 12. SI unit of temperature
- 15. model Explains matter as particles in constant motion