Across
- 4. the solid form of water
- 8. the main part of the air on our planet
- 10. Device for heating chemicals
- 11. Produced when a solvent dissolves a solute
- 13. Gas necessary for life
- 14. Glass container for chemical reactions
- 16. state of matter where particles vibrate about a fixed point
- 18. the main element in coal
- 19. the low density gas in some balloons
- 20. hydrochloric and sulphuric are examples
- 21. Two hydrogens and an oxygen
Down
- 1. The only liquid metal at room temperature
- 2. turns blue with universal indicator
- 3. Gas produce by a burning candle
- 5. highest energy state of matter
- 6. units for temperature
- 7. the colour of the cooler flame on a Bunsen burner
- 9. the colour of the hottest flame on a Bunsen burner
- 12. a gas which pops with a lighted splint
- 15. materials do this when heated
- 17. iron, copper and zinc are all examples of this type of substance