Across
- 2. identity change of an atomic nucleus
- 7. electron beam
- 8. atom mass number
- 9. represents the reactants and products
- 13. alpha particles are emitted to restore balance
- 14. emission of ionizing radiation
- 15. different numbers of neutrons in the nuclei
- 17. high energy electrons carrying a negative charge
- 19. particle with no electric charge
- 20. number of protons and nuetrons in a nucleus
Down
- 1. helium nucleus
- 3. particle with negative charge
- 4. penetrating electromagnetic radiation
- 5. high energy, high speed electron or positron
- 6. a unit of mass for atomic and molecular weights
- 10. number of protons in the nucleus of the atom
- 11. emission of energy in the form of waves
- 12. atomic nucleus loses energy by radiation
- 16. particle with negative charge
- 18. smallest unit of matter