Across
- 2. a chemical rule of thumb
- 5. describes how long the wave is
- 8. an atom with a net of electric charge
- 10. a positively charged ion
- 11. a negatively charged ion
- 12. the shell of an atoms nucleus
- 14. a particle that is emitted from the nucleus
- 15. describes where electrons are located
- 17. particle showing quantum light
- 18. penetrating electromagnetic radiation
- 19. the lowest state of energy
- 21. sum of mass and atomic number
- 22. energy level described as quantum theory
Down
- 1. the number of waves that pass time
- 3. a model of how valence shells are shown
- 4. electrons in the outermost shell
- 6. particles that have two protons and neutrons
- 7. compound of spectrum frequencies
- 9. the flow of energy at the speed of light
- 13. energy that travels through the speed of light
- 16. the smallest unit
- 20. ionizing radiation particles