Across
- 1. two substances to make a solid
- 3. when the substance changes
- 5. the way the atoms are moving and the shape of a substance
- 9. substances mix and no energy is released
- 11. stays the same during a reaction
- 12. the weight of the substance stays constant
- 14. can't be converted
- 15. absorb heat
- 16. a first model of something
- 17. what a chemical reaction makes
- 18. a limitation of the weight of a substance
Down
- 2. it has to be met
- 4. where nothing can affect the reaction
- 6. it takes it back
- 7. mixes into a substance and disappears
- 8. the elements can affect the reaction
- 10. absorbs and releases heat
- 13. what is used to make a chemical reaction