Across
- 2. basic building block of matter
- 4. a measure of the amount of space that matter occupies
- 7. measurement of how tightly material is packed together
- 8. compounds composed of only carbon and hydrogen
- 11. a combination of 2 or more atoms
- 13. material that releases energy when burned
- 14. enters chemical reaction
- 15. matter made up of only 1 single type particle
- 16. the amount of matter in an object
- 18. uniform throughout
Down
- 1. not uniform throughout
- 3. conversion of light energy into chemical change
- 5. appaerance changed but not substance
- 6. solid particles that become airborne
- 9. conclusion reached on evidence or reasoning
- 10. formed by a chemical reaction
- 11. combination of different substances or molecules
- 12. the process of burning a fuel
- 17. particulate matter that is a product of combustion
- 19. information obtained through the senses