2. Valence electrons Energy levels Metal, nonmetal, and metalloids Phases of matter Review 10 20 30 40 50

3. Question 1 - 10 How many valence electrons does Barium (Ba) have?

4. Answer 1 – 10 2

5. Question 1 - 20 How many valence electrons does Antimony (Sb) have?

6. Answer 1 – 20 5

7. Question 1 - 30 How many valence electrons does iron (Fe) have?

8. Answer 1 – 30 variable

9. Question 1 - 40 Which one of the following elements have the most valence electrons: Fr Ni Bi I

10. Answer 1 – 40 I

11. Question 1 - 50 What are the groups on the periodic table and how do they organize the elements?

12. Answer 1 – 50 The groups are the vertical rows and organize the elements by valence electrons.

13. Question 2 - 10 How many electron energy levels does sodium (Na) have?

14. Answer 2 – 10 3

15. Question 2 - 20 How many electron energy levels does germanium (Ge) have?

16. Answer 2 – 20 4

17. Question 2 - 30 How many electron energy levels does radon (Rn) have?

18. Answer 2 – 30 6

19. Question 2 - 40 How many electron energy levels does helium (He) have ?

20. Answer 2 – 40 1

21. Question 2 - 50 What are the periods on the periodic table and how do they organize the elements?

22. Answer 2 – 50 Periods are the horizontal rows and organize the periods by electron energy levels?

23. Question 3 - 10 Is tin (Sn) a metal, nonmetal, or metalloid?

24. Answer 3 – 10 metals

25. Question 3 - 20 Is selenium (Se) a metal, nonmetal, or metalloid?

26. Answer 3 – 20 nonmetal

27. Question 3 - 30 Contrast two physical properties of metals and nonmetals

28. Answer 3 – 30 Metals Nonmetals Positive ions Negative ions Shiny Dull Malleable Brittle Good conductor Poor conductor

29. Question 3 - 40 Which metalloid is essential for making computer chips?

30. Answer 3 – 40 Silicon (Si)

31. Question 3 - 50 How do we use the periodic table to determine the phase of matter for the elements?

32. Answer 3 – 50 Gases are in the gun. Group 18 is the barrel. N, O, and F are the handle. Chlorine is the trigger. H is the ejected casing. Liquids are Br and Hg. Everything else is a solid

33. Question 4 - 10 What phase of matter is nitrogen (N)?

34. Answer 4 – 10 Gas

35. Question 4 - 20 What phase of matter in lithium (Li)?

36. Answer 4 – 20 Solid

37. Question 4 - 30 Where are the gases located on the periodic table? Describe the parts?

38. Answer 4 – 30 Group 18 is the barrel. The handle is N, O, & F The trigger is Cl. H is the ejected casing.

39. Question 4 – 40 What are the liquids on the periodic table and what memory tricks do we use to remember them?

40. Answer 4 - 40 The liquids are bromine and mercury. Bromine is in front of the trigger and mercury is the only liquid metal.

41. Question 4 - 50 How do we identify the solids on the periodic table?

42. Answer 4 – 50 Everything that is not a gas or a liquid.

43. Question 5 - 10 An irregular object with a mass of 105 g is placed in a graduated cylinder with a volume of 50 mL. The volume in the cylinder rises to 75 mL. What is the density of the object?

44. Answer 5 – 10 D = m/V m = 105 g V = 75 mL – 50 mL = 25 mL D =m / V – 105 g / 25 mL = 4.2 g/mL

45. Question 5 - 20 What is the density of a cube with 5 cm sides? The mass of the cube is 750 g.

46. Answer 5 – 20 D = m / V m = 750 g V = 5 cm x 5 cm x 5 cm = 125 cm 3 D = m / V = 750 g / 125 cm 3 = 6 g/ cm 3

47. Question 5 - 30 The molecules in a sample of matter are separated and moving around independently. What phase of matter is represented?

48. Answer 5 – 30 Gas

49. Question 5 - 40 What is the boiling / condensation point of the substance represented in the below heating curve?

50. Answer 5 – 40 95 °C

51. Question 5 - 50 What is the name and atomic mass of the following atom? Neutrons 8 Protons 6 Electrons 6

52. Answer 5 – 50 Carbon - 14