Across
- 1. A substance that expands freely
- 4. The quantity of matter
- 6. The study of matter and substances
- 7. A particular type of matter
- 8. Two or more atoms bonded together
- 9. Something that flows freely
Down
- 2. The basic building block for all matter
- 3. A pure substance consisting of only atoms
- 4. Anything that has mass and takes up space
- 5. The amount of space a substance occupies
- 7. Something that's firm and not a liquid