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