Across
- 3. The smallest particle of an element that makes up all matter
- 5. The amount of space an object takes up
- 7. The amount of matter in an object (weight)
- 11. the mass (weight) of an atom
Down
- 1. Anything that has mass and volume
- 2. state of matter where atoms are tightly packed and vibrate in place
- 4. The center of an atom where protons and neutrons live
- 6. A pure substance made of only one kind of atom
- 8. represents the number of protons in the nucleus of an atom
- 9. state of matter where atoms move very fast and are spread far apart
- 10. state of matter where atoms are close together but can slide past each other