1. Periodic The Table REVIE W

2. Periodic Table Review Write the missing information (?) for each number.

3. NOTE: The symbol means that the element symbol is unexpected.

4. Hydrogen 1 ? 1.008 1.)

5. Helium 2 ? 4.003 2.)

6. Lithium 3 ? 6.941 3.)

7. Beryllium 4 ? 9.012 4.)

8. Boron 5 ? 10.811 5.)

9. ? 6 C 12.011 6.)

10. ? 7 14.007 N 7.)

11. ? 8 15.999 O 8.)

12. Fluorine 9 18.998 ? 9.)

13. Neon 10 20.180 ? 10.)

14. Sodium 11 22.990 ? 11.)

15. Magnesium 12 24.305 ? 12.)

16. Aluminum 13 26.982 ? 13.)

17. Silicon 14 28.086 ? 14.)

18. Phosphorous 15 30.974 ? 15.)

19. ? 16 32.066 S 16.)

20. ? 17 35.453 Cl 17.)

21. Argon 18 39.948 ? 18.)

22. Potassium 19 39.098 ? 19.)

23. ? 20 40.078 Ca 20.)

24. Titanium 22 47.88 ? 21.)

25. Chromium 24 51.996 ? 22.)

26. Manganese 25 54.938 ? 23.)

27. Iron 26 55.847 ? 24.)

28. Cobalt 27 58.933 ? 25.)

29. ? 28 58.69 Ni 26.)

30. Copper 29 63.546 ? 27.)

31. ? 30 65.39 Zn 28.)

32. Silver 47 107.868 ? 29.)

33. Tin 50 118.710 ? 30.)

34. ? 78 195.08 Pt 31.)

35. Gold 79 196.967 ? 32.)

36. Mercury 80 200.59 ? 33.)

37. Lead 82 207.2 ? 34.)

38. Carbon 6 12.011 C 35.) How many protons does an atom of carbon have?

39. Bromine 35 79.904 Br 36.) How many protons does an atom of bromine have?

40. Tungsten 74 183.85 W 37.) How many protons does an atom of tungsten have?

41. Gold 79 196.967 Au 38.) How many electrons does an atom of gold have?

42. Sodium 11 22.990 Na 39.) How many electrons does an atom of sodium have?

43. Chlorine 17 35.453 Cl 40.) How many neutrons does an atom of chlorine have?

44. Copper 29 63.546 Cu 41.) How many neutrons does an atom of copper have?

45. Mercury 80 200.59 Hg 42.) How many neutrons does an atom of mercury have?

46. Hydrogen 1 1.008 H 43.) How many electrons does an atom of hydrogen have?

47. Hydrogen 1 1.008 H 44.) How many neutrons does an atom of hydrogen have?

48. Lithium 3 6.941 Li 45.) Which letter is the atomic number? A B C D

49. Lithium 3 6.941 Li 46.) Which letter is the atomic mass? A B C D

50. Lithium 3 6.941 Li 47.) Which letter is the number of protons in one atom of lithium? A B C D

51. Lithium 3 6.941 Li 48.) Which letter is the number of protons and neutrons in one atom of lithium? A B C D

52. Antimony 51 121.75 ? 49.)

53. ? 92 238.029 U 50.)

54. Created by PJ Creek 8 th Grade Social Studies & Science Teacher Amelia Carriel Junior High School O’Fallon, Illinois 2010