BIG IDEA: The number of protons compared to neutrons determines an isotope’s stability. Unstable isotopes emit dangerous radiation as they decay!
1. Warm-up: Figure out the number of protons and neutrons in Gold-202. Explain how you figured this out.
2. Review for the quiz; collect homework.
3. Complete activity, “Island of Stability,” pg. 74-75. Debrief activity.
4. Review Big Idea and assign the homework.
Homework: 1) text, pg. 76. 2) Do the 2nd run of your Quarter Project based on your revised procedure. Due Monday. 3) Study for quiz for 30 min. Bring verification.
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