1. Name the particles in the atom and give the charges associated with each.

2. Which particles contribute to the mass of the atom?

3. What is the net charge of the nucleus?

4. Explain your answer to question 3.

5. What is the net charge of an atom?

6. Why are electrons described as moving in an Electron Cloud?

7. How can you determine which electrons have more energy than others?

8. How many electrons can each of the first three energy levels hold (max)?

9. How is the identity of an atom determined?

10. What is an isotope?

11. Which subatomic particle can be gained or lost without having a nuclear reaction?

12. Why are electrons NOT included in the mass of the atom?

13. In what general part of the atom do chemical reactions occur?

14. Which electrons in specific will determine the reactivity of an atom or element?

15. Which part of the atom contributes most to its volume?

16. How is the atomic number of an atom determined?

17. What happens if you change the number of protons?

18. Why is the average atomic mass on the periodic table not usually a whole number?

19. What is the difference between carbon 12 and carbon 14?

20. C – 12 is one way to write carbon twelve … demonstrate another method.

21. What makes a nucleus stable?

22. Why might an unstable isotope of an element be dangerous?

23. Name 3 radioactive particles that can be emitted during nuclear decay.

24. Are human beings responsible for all the radiation in the environment?

25. What is a period on the periodic table?

26. What do all elements in the same period have in common?

27. What is a group or family on the periodic table?

28. What do elements in the same group or family have in common?

29. What separates the metals from the nonmetals?

30. How do you determine the number of electrons that a given element has?

31. What does the term valence mean?

32. How many valence electrons do the Noble Gases, Halogens and Alkali Metals have respectively?

33. How many Protons, Neutrons and Electrons are in a typical GOLD atom?

34. What is a proper way to indicate an element that has a mass number of 14 and has 8 neutrons?

35. How many electrons are in the outer energy level of a STABLE atom?

36. How many electrons will group one atoms lose?

37. How many electrons will group 17 elements gain?

38. What is the name for reactions that involve protons and neutrons?

39. What is the BIG output of nuclear reactions?

40. What happens during FISSION?

41. If neutrons ejected during fission can initiate other fission reactions what could you get?

42. What type of nuclear reaction occurs in power plants, nuclear weapons and submarines?

43. Does the law of conservation of mass apply to nuclear reactions and why or why not?

44. What happens during nuclear fusion?

45. Where would you expect fusion to occur?

46. What is needed to start a fusion reaction?

47. What is one drawback of using radiation treatments in medicine?

48. Why is it important to store nuclear waste material in a special way?

49. What equation could be used to calculate the energy released in a nuclear reaction?

50. When are cells most susceptible to damage from radiation?