Across
- 2. reactions of the chemicals and elements
- 6. can't be broken down
- 8. smallest part
- 10. a number or multiplication
- 11. two or more substances not combined
- 12. mixing creating something new
- 14. attraction that holds molecules
- 16. force of attraction
- 17. substance starting speeds a chem. reaction
Down
- 1. substance in chem. reactions
- 3. the amount of space occupied in a object
- 4. internal energy that is transferred
- 5. bonding together
- 7. more than a atom
- 9. takes up space
- 11. amount of stuff
- 13. the work
- 15. absorbs heat