Across
- 2. give off, send forth, or discharge
- 5. atom with same atomic number, different number of neutrons
- 8. the amount per unit size
- 10. the positively charged dense center of an atom
- 12. relating to the smallest component of an element
- 15. an elementary particle with a negative charge
- 16. a subatomic particle with zero charge
- 17. a radioactive isotope of an element
Down
- 1. arrangement of chemical elements according to atomic number
- 3. a substance that cannot be separated into simpler substances
- 4. is the discharge of particles or rays in nuclear decay
- 6. the quantity of unbalanced electricity in a body
- 7. a stable particle with a positive charge
- 8. the spontaneous disintegration of a radioactive substance
- 9. having no net electric charge
- 11. in a spontaneous manner
- 13. apparatus to maintain and control a nuclear reaction
- 14. maintaining equilibrium
- 18. exhibiting or caused by emissions in nuclear decay