Across
- 3. metals element group that has 1 valence electron and is very reactive
- 5. Chemical compound of salt
- 8. atom with a charge
- 11. negatively charged ion
- 12. Rule that states atoms want to have 8 electrons in their outer shell
- 13. elements that are not metals but not non-metals
- 15. atoms that have the same number of protons but different masses
- 17. element with 1 proton
- 18. What are the outer most electrons
- 19. A neutrally charged subatomic particle
Down
- 1. positively charged ion
- 2. A negatively charges subatomic particle
- 4. subatomic particle defines the element
- 6. Type of atom with a full outer shell
- 7. Elements that bond with themselves of they are alone
- 9. elements in “Group B”
- 10. smallest measure able particle
- 14. element with 2 protons
- 16. element with eight protons