Across
- 1. anything that has mass and takes up space
- 4. reaction where heat energy is absorbed
- 5. nothing is made or destroyed
- 7. 2 or more atoms held together by chemical bonds
- 8. the study of how matter changes
- 9. two or more substances sharing the same space
- 10. must change into different substance to be observed
- 12. can be observed with changing the substance
- 14. a single kind of matter that is pure
Down
- 2. cannot be broken down into any other substances
- 3. substance made of 2 or more elements in a set ratio
- 4. reaction where heat energy is given off
- 5. chemical symbols and ratio of a compound
- 6. basic particle from which elements are made
- 8. force of attraction between atoms
- 11. flammability
- 13. mass divided by volume