1. What are the types of radioactive decay? And what is emitted in each type? (2 points)
2. What is the kind of force holding protons and neutrons together in a nucleus? (1 point)
3. Why are protons not able to push one another away in a nucleus? (1 point)
4. What will happen if an isotope emits gamma ray? (1 point)
5. If an isotope has a half-life of 10 days, how many grams of this isotope will remain after
20 days, given the starting mass is 12 grams? (2 points)
6. What is mass defect? What does the mass transform into? (1 point)
7. What is nuclear fission and what is nuclear fusion? (2 points)