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