Across
- 3. Two or more of the same element combined
- 5. The periodic table is made up of metals and
- 9. When two or more different elements are combined
Down
- 1. Made up of a nucleus and outer shells
- 2. Is part of an atom, but is not found in the nucleus
- 4. The study of elements
- 6. Is found in a nucleus and doesn't have a charge
- 7. Water is made up of two of an element
- 8. An original substance