Across
- 2. Atomic particles with no electrical charge.
- 3. Force that pulls objects toward each other.
- 6. A disturbance that transfers energy through matter.
- 12. Negatively charged particles orbiting the nucleus.
- 13. Stored energy based on position.
- 15. The amount of matter in an object.
- 16. The smallest unit of an element.
- 17. Resistance of an object to change its motion.
- 18. Two or more atoms bonded together.
- 19. Mass per unit volume of a substance.
- 20. Vibrations that travel through air or water.
Down
- 1. A push or a pull on an object.
- 4. Speed of an object in a specific direction.
- 5. Energy of an object in motion.
- 7. The amount of space an object occupies.
- 8. Force that opposes motion between two surfaces.
- 9. Positively charged particle in an atom's nucleus.
- 10. Distance traveled divided by time.
- 11. A pure substance made of only one kind of atom.
- 14. The ability to do work.