Across
- 2. protons+neutrons
- 4. energy traveled through light
- 9. splitting or joining of a nucleus
- 10. emitted in a vacume tube
- 11. the shortest wavelength and highest energy
- 13. 1.66 x 10^27 kg
- 16. has a positive charge of 1+
- 18. A negatively charged particle found in all types of matter
- 19. the number of protons in an element
- 20. high speed electrons
Down
- 1. change of atoms once it becomes unstable
- 3. two protons an two neutrons bonded together
- 5. the smallest particle of an element
- 6. has a mass nearly equal to that of a proton
- 7. the transmutation of a neutron into a proton and an electron
- 8. desribes a nuclear reaction
- 12. when the nucleus of an atom becomes unstable
- 14. same atomic number but different mass number
- 15. number of protons and neutrons in a nucleus
- 17. products that are part of radioactive decay