Across
- 3. protons + neutrons
- 5. the # of protons in the nucleus
- 6. smallest possible unit into which matter can be divided while still maintaining properties
- 7. stored in the chemical bonds of a substance
- 10. can be shaped
- 11. atoms have same number of protons, but have different # of neutrons
- 12. Sn
Down
- 1. negatively charged particles
- 2. energy (heat) is released
- 4. energy (heat) is absorbed
- 5. Gold
- 8. K
- 9. any substance that cannot be decomposed into simpler substances by ordinary chemical processes.