Across
- 2. either a proton or a neutron
- 5. electromagnetic radiation in particle form
- 6. atom with one proton and neutron
- 8. type of electromagnetic radiation with a wavelength between 0.1 and 10 nm
- 10. produced by radios and astronomical events
- 13. electromagnetic radiation produced by nuclear events
- 14. nuclear glue
- 15. negatively charged subatomic particle
- 16. matter made up of the antiparticles of regular matter
- 17. 1/10 nm
- 20. a combination of two protons and two neutrons, a He4 nucleus
- 21. a subatomic particle with the same mass as an electron but a positive charge
Down
- 1. involves the breaking up of heavy nuclei
- 3. average energy per nucleon
- 4. when the protons or neutrons in an atom transforms into the other
- 7. involves the combining of light nuclei
- 9. about two Angstroms or 0.2 nm
- 11. atoms of the same element with a different number of neutrons
- 12. velocity/frequency
- 18. the center of an atom; made up of protons and neutrons
- 19. positively charges subatomic particles