Across
- 1. the power in a certain thing
- 4. the number of the elements in a periodic table
- 6. substace that flows freely
- 7. 2+ forms of the same element
Down
- 1. made from protons nuetrons and electrons
- 2. the thing in charge of an object
- 3. something you can touch
- 4. unit in a chemical element
- 5. the amount of matter in something