Across
- 4. A negative charge
- 5. The smallest unit of matter
- 6. the amount of matter that's in an object
- 7. a positive charge
- 8. anything that occupies space and mass
- 9. One of the states of matter where the molecules in a solid are closer together
- 10. a state of matter that has no fixed shape
Down
- 1. the number in the left hand top corner of an element
- 2. a neutral charge
- 3. the number below the symbol of a element