Across
- 3. The number in a chemical equation that says how many atoms of an element there is
- 5. Is equal to the atomic number
- 8. A pure substance that cannot be broken down
- 9. mass Is the sum of protons and neutrons
Down
- 1. The rows on a periodic table
- 2. The columns on a periodic table
- 3. Represents an element
- 4. The result of a chemical reaction
- 6. table Organized chart of elements
- 7. reaction A complete new substance