Chemistry Review

5. Divide, Multiple, and Add include a unit.
9. Two or more atoms cavalently bound together.
10. J.J Thomson discovered the
12. Electrons fill the lowest energy orbitals first.
16. An atom or group of atoms that has a charge.
18. Formed when atom loses electrons.
19. Atoms that have the same number of protons but different numbers of neutrons.

1. Some compounds trap water crystals when they form.
2. Early Greek Scholar-was the first to suggest the existence of atoms.
3. Atoms of different elements can mix together to form
4. Two of the same atom bound together.
6. Opposite charges
7. Formed when atom gains electron.
8. Elements are represented by
11. blocks Matter that makes up everyday objects.
12. All matter is composed of tiny indivisible particles.
13. Compounds are represented by
14. Indicates the highest energy level.
15. Covalent Compounds are between 2
17. In Rutherford's atomic model the protons and neutrons are located in the