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3. Atoms
Isotopes &
Ions
Old Guys
Periodic
Table
Mystery?
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4. What has to be true for a atom to be neutral?

5. Is must have the same number of protons (+) and electrons (-)
In other words it can not be a ion

6. What determines the identity of a element?

7. The atomic number

8. An atom of Ag with 47 p+ 47 e- and 61 n0 would have a mass number of what?

9. 108

10. How are ions formed?

11. Ions are formed with an atom gains or looses electrons

12. Why are all atoms of an element the same?

13. The number of protons in each atom are the same

14. What type of force holds the nucleus together?

15. A STRONG Nuclear Force

16. What does the current model of a atom suggest?

17. An electron cloud surrounds the nucleus

18. A atom of Plutonium with 94 protons 94 electrons and 145 neutrons would have a mass number of what?

19. Plutonium-239

20. How do Isotopes exist for the same elements? What is different?

21. Isotopes have a different number of neutrons from the original atom

22. How many Neutrons are in a atom of C-14?

23. 8

24. Who preformed the Gold Foil Experiment?

25. Rutherford

26. What does the term “atomos” mean and who first coined it?

27. Can’t be divided, Democritus

28. Which delightful man discovered the electron?

29. Thomson

30. What were peoples reactions when Democritus proposed the idea of an uncuttable particle?

31. Poor Democritus no one believed him because of that mean ol’e Aristotle

32. Who believed that an atoms positive charge was located in the nucleus?

33. Rutherford

34. Elements that do not ordinarily form compounds are called what?

35. Noble Gases

36. How did Mendeleev first organize the periodic table?

37. Increasing atomic mass

38. What are the two most common Alkaline Earth Metals?

39. Calcium and Magnesium

40. Elements that are poor conductors at room temperature are classified as what?

41. Nonmetals

42. What do elements in the same column of the periodic table have in common?

43. Their properties

44. What are atoms composed of?

45. Protons, Neutrons and Electrons

46. What does the number of protons in a atom represent?

47. The atomic number

48. According to the Periodic Table what determines the identity of an element?

49. Atomic Number

50. How many Neutrons are in a atom of Calclum?

51. 20

52. What are the horizontal rows of the period table called?

53. Periods

54. Final Jeopardy
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55. Final Answer

56. Final Question