Across
- 5. a representation of solid,liquid and gas
- 8. a form of sugar that is produced through photosynthesis
- 9. mixture of metals and non-metals
- 12. a decrease in size
- 15. building blocks of all matter
- 16. substance in plants leaves that makes them green that collects energy from the sun for photosynthesis
- 18. solid to gas
- 19. gas to solid
- 20. shiny
- 21. process in which two gases and two liquids mix due to the motion of their particles
- 22. age 3300BCE - 1200BCE
Down
- 1. liquids that can be mixed
- 2. an alloy harder than pure copper
- 3. starting substances in chemical reactions
- 4. substances that do not conduct heat
- 6. substance that dissolves other substances
- 7. the process of liquid becoming gas
- 10. minerals rich in metal
- 11. substance that can chemically dissolve other substance
- 13. substance formed by chemical reaction
- 14. describes elements that consist of single at
- 17. age 1200BCE - 500CE
- 18. substance being dissolved