Across
- 2. – Two or more atoms bonded together.
- 4. – The amount of matter in an object.
- 6. – A group of cells working together.
- 8. – A force that resists motion between surfaces.
- 10. – The ability to do work.
- 12. – The force that pulls objects toward Earth.
- 13. – The smallest unit of matter.
Down
- 1. – The basic unit of life.
- 3. – A community of living things and their environment.
- 5. – A state of matter with a fixed shape and volume.
- 7. – The process of liquid changing to gas.
- 9. – A particle in the nucleus with no charge.
- 11. – The path a planet takes around the Sun.