chemistry

3. the smallest particle of a chemical element that can exist.
4. a material typically hard and shiny
6. a positively charged ion
9. they go in the shells
10. a subatomic particle about the same weight as a proton but without electrical charge
11. a element or substance that is not metal
13. is a molecule, particle or atom with a net electrical charge

1. a repeated three-dimensional arrangement of atoms, ions, or molecules in a metal or other crystalline solid.
2. outer most electron shell
5. a positively electrical charge stable subatomic particle
7. symbol is Na
8. is also called electrovalent bond
12. a negatively charged ion