Across
- 4. A decrease in size
- 6. Substances made up of only one type of atom
- 7. A liquid turns into a solid
- 9. An increase in size
- 10. A property of metals meaning "shiny"
- 11. A form of sugar
- 15. A substance that dissolves another substance
- 16. A substance being dissolved
- 17. Substances made out of identical molecules
- 20. A heated liquid turns into gas
- 21. Substances formed in chemical reactions
Down
- 1. Clusters of two or more atoms
- 2. A model representation of solids, liquids and gases
- 3. When a metal reacts with its environment
- 5. Minerals rich in metals
- 8. A combination of two or more elements and compounds
- 12. A substance in plants which makes them green
- 13. An alloy of iron and carbon
- 14. The smallest building blocks of matter
- 18. Two liquids / gases mix
- 19. The first chemical explosive
- 20. An alloy of copper and tin