Across
- 4. Very reactive metals
- 5. Describes the physical appearance and composition of a substance
- 7. A change in form but not in chemical composition
- 9. Made up of more than one pure substance
- 13. A cluster of atoms joined together
- 14. Positively charged particle
- 15. A mixture in which the particles are not uniformly scattered
- 16. Made up of protons, neutrons, and electrons
- 17. Negatively charged particle
Down
- 1. A change in which one or more new substances are formed
- 2. Very reactive non-metals
- 3. Neutrally charged particle
- 5. A material that contains only one type of particle
- 6. Description of how a substance interacts with another substance
- 8. A mixture in which particles are uniformly scattered
- 10. Columns going up and down on the periodic table
- 11. Stable elements are in this family
- 12. Rows that are across the periodic table