Across
- 2. a reaction accompanied by or requiring absorption of heat
- 4. substance with no fixed shape or volume, particles are far apart
- 5. an object made from something that cannot be broken apart
- 9. two or more substances together
- 11. a substance made of one type of atom
- 12. anything that has mass and occupies space
- 13. a substance that has no shape or volume,particles are moving away
Down
- 1. apart
- 3. cannot dissolve in another substance
- 6. it dissolves in another substance
- 7. smallest unit of matter
- 8. a reaction that releases energy usually heat
- 10. stable shapes with particles that are close together