Do Now

1. Do Now

2. Radioactive Waste: the unstable atoms left over from nuclear reactions in power plants.

3. Alpha Decay • α-decayis a type of radioactive decay in which an atomic nucleus emits an alpha particle and thereby transforms (or 'decays') into an atom with a mass number 4 less and atomic number 2 less.

4. Alpha Decay

5. Beta Decay • β decay is a type of radioactive decay in which a beta particle (an electron or a positron) is emitted from an atomic nucleus. The β decay process allows the atom to obtain the optimal ratio of protons and neutrons.

6. Beta Decay

7. Gamma Decay • an excited nucleus emits a gamma ray almost immediately upon formation(a nuclear isomeric transition, however, can also produce inhibited gamma decay with a measurable and much longer half-life).

8. Gamma Decay

9. Nuclear Energy

10. Chain Reaction

11. -When the nucleus splits apart into smaller atoms. • Used in nuclear power plants to make electricity. • Releases two new atoms and releases three neutrons (to keep the chain reaction going) • Creates radioactive waste. Nuclear Fission Reaction Reactant (before)  Product (after)

12. + + + 0 0 0 0 0 0 + + + 0 0 + 0 + + + ENERGY 0 0 0 + 0 0 + + + 0 0 + + + + 0 0 0 0 0 + +

13. Fission Reactions Practice + 11 24 0 + 22 48 ENERGY 0 + 11 24 0 Is this an example of nuclear fission of fusion? Write the equation for nuclear reaction above. _________________  __________________ 3) Explain why is the product is radioactive.

14. + 11 24 0 + 22 48 ENERGY 0 + 11 24 0 What element is undergoing fission? 2.)Write the equation for nuclear reaction above. _________________  __________________ 3) Explain why is the product is radioactive.

15. + 46 120 0 + 92 240 ENERGY 0 + 46 120 0 What element is undergoing fission? 2.)Write the equation for nuclear reaction above. _________________  __________________ 3) Explain why is the product is radioactive.

16. + 42 105 0 + 84 210 ENERGY 0 + 42 105 0 What element is undergoing fission? 2.)Write the equation for nuclear reaction above. _________________  __________________ 3) Explain why is the product is radioactive.

17. + 19 44 0 + 38 88 ENERGY 0 + 19 44 0 What element is undergoing fission? 2.)Write the equation for nuclear reaction above. _________________  __________________ 3) Explain why is the product is radioactive.

18. Exit Slip Write the nuclear reaction for a Californium (Cf) atom that splits perfectly in half in a fission reaction. ________________ Why is this product radioactive?