Across
- 1. Reaction- A process where chemicals interact
- 5. the branch of science
- 7. change- changes with new product
- 8. smallest unit of matter
- 10. the measure of matter in an object
- 12. a substance that speeds up chem reactions
- 15. the association of atoms or ions
- 16. what forms during chemical reactions
- 17. combination of two or more substances
- 18. Takes up space
Down
- 2. Stored in chemical bonds
- 3. any substance with identical molecules
- 4. there at the start of an chemical reaction
- 6. energy transfer due to temperature
- 9. Made up of two or more atoms
- 11. a pure substance that can't be broken down
- 13. kinetic energy of all atoms
- 14. the amount of space