Chemistry

4. Outer layer of Atoms
5. 2 or more atoms combined
7. measurement of how much stuff is in something
8. smallest complete unit of matter
12. ability to do something
13. atoms share a pair of electrons
14. No charge buffer between like charges
15. Negative charge orbiting the nucleus is responsible for all atomic bonds

1. Same 2 atoms combined
2. an atom gives an electron and atom takes an electron to complete its valance shell, giver atom becomes positive and the receiver becomes negative and they join together
3. To study the material and reaction that changes and produces matter
6. 2 or more elements
9. amount of space that something occupies
10. anything that has mass and takes up space
11. Positive charge in nucleus ( center ) determine element *