Across
- 2. particle that moves with the speed of light
- 3. is considered a negative ion
- 7. made up of two neutrons and two protons
- 9. The shell that electrons can be found located
- 11. Can be considered a single packet of energy or even matter
- 17. Arrangement of electrons that are around an atomic nucleus
- 20. form of energy that is both electrical and magnetic waves
- 21. distance of any point
- 22. An atom located in an outermost shell
Down
- 1. Has a high-energy
- 4. Number of waves that can be passed in a given amount of time
- 5. physical and chemical properties of elements
- 6. consider an ion with a positive charge
- 8. Type of diagram that can represent the valence electrons
- 10. can be a range around an atom that is excited by radiation or heat
- 12. An energy that gives off energy by matter
- 13. are types of energy that are associated with electrons
- 14. Has the lowest energy of state
- 15. A release of energy that decays
- 16. Has the shortest wavelength but highest energy
- 18. atoms that have eight electrons in the shell
- 19. Group of atoms that is impossible to remove