Across
- 2. physical and chemical properties change
- 3. elements that are in the same column
- 5. particles that are in clouds around the nucleus
- 9. ionic metals and non metals
- 11. gases with full outer energy level of electrons
- 12. smallest unit of life
- 14. protons and neutrons equals mass and number
- 16. metals give their electrons to the non metals
Down
- 1. electrons are shared between the elements
- 4. covalent nonmetals nonmetals
- 6. result of a chemical bond
- 7. all atoms want this to be considered happy
- 8. number of protons equals electrons
- 10. major group of elements will lose electrons
- 13. atoms want a full outer energy level
- 15. atomic number equals protons or electrons