Across
- 3. tool chemists use
- 4. two or more elements chemically combined
- 7. center of the atom
- 11. ability to be hammered into sheets
- 13. how harmful a substance is
- 14. how acidic a substance is
- 15. the amount of matter in something
- 16. space something takes up
Down
- 1. ability of a substance to react
- 2. negatively charged subatomic particle
- 3. positively charged subatomic particle
- 5. neutral subatomic particle
- 6. compactness of a substance
- 8. changes the chemical makeup of a substance
- 9. building block of matter
- 10. change that does not change the chemical composition of a substance
- 11. anything that has mass and takes up space
- 12. simplest form of pure matter