Across
- 2. "Mass per unit volume of a substance."
- 6. "State of matter that expands to fill any container."
- 7. "State of matter found in stars and lightning, consisting of ionized gases."
- 9. "Groups of atoms bonded together."
- 10. "State of matter with a definite shape and volume."
Down
- 1. "Amount of space an object occupies."
- 3. "Different forms in which matter can exist."
- 4. "Measure of the amount of matter in an object."
- 5. "State of matter with a definite volume but no definite shape."
- 8. "Basic building blocks of matter."