Across
- 2. distance between corresponding points
- 3. a unit of energy
- 6. the rate of increase speed
- 9. a subatomic particle with a negative electric charge
- 11. converting an atom or molecule into an ion
- 14. device used to measure temperature
- 15. a very small particle
Down
- 1. the rate of something in a given direction
- 4. a substance that has mass and volume
- 5. the flow of charge
- 7. physical bodies attracting each other with force
- 8. a nuclear reaction
- 10. a form of electromagnetic radiation
- 12. subatomic particle with no charge
- 13. a basic unit of matter