Across
- 3. no charge particle; in nucleus
- 9. sharing electrons
- 10. center of atom
- 11. negatively charged particles;orbits nucleus
- 13. the number of protons in the nucleus
- 14. the ease and speed with which an element combines with other substances
- 15. rows in periodic table
- 17. columns in periodic table
Down
- 1. the sum of protons and neutrons
- 2. what is formed during a chemical change
- 4. substances that undergo chemical changes
- 5. positively charged particle; in nucleus
- 6. Electrons the electrons with the highest energy on the last energy level
- 7. hammered or rolled into flat sheets or other shapes
- 8. shiny and reflective
- 12. donate/transfer valence electrons
- 16. material that can be pulled out or drawn into long wires