Across
- 1. a substance that obtain or contains an atom
- 3. A proton is a subatomic particle, that has an electrical charge SS
- 6. negatively charged particles of an atom
- 7. a subatomic particle of about the same mass as a proton but with no electrical charge
Down
- 2. anything that has mass and volume
- 4. a substance or matter in a state in which it will expand to fill the whole of an area
- 5. one of the four fundamental states of matter and are packed together
- 6. a substance of atoms