Across
- 5. A negatively charged subatomic particle
- 6. It maintains its shape and volume
- 8. Uses boiling points to seperate componets
- 10. A group of atoms with a fixed composition
- 12. The sum of the number of neutrons and protons in an isotope
- 15. An electron in an atoms highest energy level
- 16. An atom change due to different amounts of protons and electrons
- 17. A reaction that makes a substance change properties
- 18. Doesn't have uniform compositions
Down
- 1. The distance between the same points on two waves
- 2. formed by two or more different atoms
- 3. A change you can see
- 4. The percentages that describe isotopic compositions
- 7. Formed from two or more pure substances
- 9. A property of matter that is quanity dependent
- 11. Uses particle size to seperate componets
- 13. The amount of protons in a atom
- 14. A type of pure substance that only has one atom