Across
- 2. type of element;mixture
- 6. protons plus neutrons
- 8. holds atoms or ions together
- 10. abbreviation of chemical names
- 12. in the nucleus;neutral
- 13. type of element;liquid or gas
- 15. bond of atoms;sharing or gaining
- 17. in the nucleus;positive
- 18. organized chart of elements
Down
- 1. number of protons
- 3. type of element;forms metallic bond
- 4. horizontal row on periodic table
- 5. in the nucleus;negative
- 7. is on the outermost shell
- 9. center of an atom;positive charge
- 11. vertical column on periodic table
- 14. particle;positive or negative charge
- 16. bond between metal atoms