Across
- 3. nuclear force the force that holds particles together
- 10. mass unit to express atomic weights
- 11. elementary particle of matter
- 12. specific # of protons and neutrons
- 13. energy energy the holds nucleus together
- 15. decay when an electron is emitted
- 16. a proton or neutron
- 18. reaction a chemical reaction of products
- 20. number total # of protons and neutrons
- 22. half of the radioactive value
Down
- 1. splitting
- 2. carriers give rise to forces between other particles
- 4. joining two or more things together
- 5. production changing of radiation quantum to electron and positron
- 6. emission of ionizing radiation
- 7. decay atomic nucleus loses energy
- 8. reaction change the identity of the atomic nucleus
- 9. a subatomic particle
- 14. nuclear force responsible for beta and decay of hadrons
- 17. model math model of elementary particles of matter
- 19. decay # of reduced by 4 an atomic number by 2
- 21. when things are being done