Across
- 1. a single type of atom
- 3. this process breaks bonds in compounds
- 4. we can use a .... in a reaction
- 6. if a substance is .......... it emits radiation
- 7. make up everything
- 9. an invisible force in magnets
- 11. we breathe this
- 12. this makes up over 70% of air
- 14. gives out heat
- 16. two elements mixed
- 17. this attracts some metals
- 18. if water cools down it becomes a....
Down
- 1. takes in heat
- 2. chemical reactions are what we did in....
- 3. a magnet that can be turned on and off
- 5. two elements chemically bonded
- 8. we burn this to get a white powder
- 10. we can write chemical reactions in a ......
- 13. if water is at room temp it is a .....
- 15. something that reacts with other things