Across
- 2. The particles move around really fast.
- 4. Little bits of matter.
- 5. Solids, liquids and gases are all states of...
- 7. The atoms are all the same in this.
- 8. An idea that scientists come up with to explain something.
- 9. When 2 or more particles are stuck together.
- 13. Things do this when they are heated.
- 14. The particles are in a fixed pattern.
- 15. Idea about how something works, made by scientists.
Down
- 1. Anything made of matter.
- 3. When gas or liquid particles spread out.
- 4. This builds up when particles hit the sides of something.
- 6. The smallest particle of matter.
- 10. Things to this when they cool down.
- 11. These flow and have no fixed shape but a fixed volume.
- 12. When particles are packed very close together.