Across
- 2. letters and numbers
- 4. an ending substance
- 7. something that can be observed
- 10. a starting substance
- 11. a process in which atoms rearrange to
- 14. a stricter formed by repeating groups
- 15. and object or a diagram
- 16. to change the order of something
Down
- 1. the temperature at which a substance changes to
- 3. the temperature at wich substance changes from the liquid phase to gas phase
- 5. something that is mad of all the sane atoms
- 6. able to cause damage
- 8. relative size of things
- 9. a group of atoms joined together
- 12. a substance that is added to the soil
- 13. the tiny pieces that all matter-all the stuff in the world- is made of