3. 1 - $100 What is a theory What is a theory A well-tested set of observations, but can still be revised A well-tested set of observations, but can still be revised

4. 1 - $400 What is the difference between quantitative and qualitative data? What is the difference between quantitative and qualitative data? Quantitative- numeric data (temperature, mass, etc) Quantitative- numeric data (temperature, mass, etc) Qualitative- observations made with the five senses Qualitative- observations made with the five senses

5. 1 - $500 What is the difference between accuracy and precision What is the difference between accuracy and precision Accuracy- how close the measured value is to the true or real value Accuracy- how close the measured value is to the true or real value Precision- how close measured values are to each other (reproducibility) Precision- how close measured values are to each other (reproducibility)

6. 2 - $200 Solve, round to the correct number of significant figures: Solve, round to the correct number of significant figures: 453.5 + 79.778 453.5 + 79.778 45.21 - 15 45.21 - 15 533.278 = 533.3 533.278 = 533.3 30.21 = 30. 30.21 = 30.

7. 2 - $300 Solve, round to the correct number of significant figures: Solve, round to the correct number of significant figures: 77.32 x 20 77.32 x 20 2.45 x 14 2.45 x 14 1546.4 = 2000 1546.4 = 2000 34.3 = 34 34.3 = 34

8. 3 - $200 Which step of the scientific method is the following scenario: Which step of the scientific method is the following scenario: You conduct a series of tests to determine if raising the temperature of water increases the solubility of salt. You conduct a series of tests to determine if raising the temperature of water increases the solubility of salt. Experiment Experiment

9. 3 - $300 Which step of the scientific method is the following scenario: Which step of the scientific method is the following scenario: After analyzing data, you determine that increasing temperature increases the solubility of salt in water After analyzing data, you determine that increasing temperature increases the solubility of salt in water Drawing a conclusion Drawing a conclusion

10. 3 - $400 Which step of the scientific method involves creating tables and charts? Collecting and analyzing data Collecting and analyzing data

11. 4 - $100 If an object has a mass of 23.5 g and a volume of 12.2 mL, what is its density? If an object has a mass of 23.5 g and a volume of 12.2 mL, what is its density? 1.93 g/mL 1.93 g/mL

12. 4 - $200 If an object has a density of 1.2 g/mL and a volume of 22 mL, what is its mass? If an object has a density of 1.2 g/mL and a volume of 22 mL, what is its mass? 26 g 26 g

13. 5 - $100 1.26 km =_____________cm 1.26 km =_____________cm 126000 cm 126000 cm

14. 5 - $200 785 mm=______________ dam 785 mm=______________ dam 0.0785 dam 0.0785 dam

15. 5 - $300.000000006 Ms= _____________ μs.000000006 Ms= _____________ μs 6000 μs 6000 μs

16. Chapter 3 grab bag $300 Is chicken noodle soup a HOMOGENEOUS or HETEROGENEOUS mixture? BACK Heterogeneous mixture

17. ELEMENT, COMPOUND OR MIXTURE? $100 Oxygen BACK Element

18. Law of Conservation of Mass $300 BACK 10 g hydrogen and 5 g oxygen form water. How much water is formed? 10 g + 5 g = 15 g Mass Reactants = Mass Products

19. Law of Conservation of Mass $500 BACK 2g A + ? g B = 5g AB 5g-2g = 3g B If you have 2 g A and want 5 g AB, how much B must you start with? A + B  AB

20. What particle? Mass = ~0 amuCharge = -1 Location = Orbits the Nucleus ELECTRON

21. What particle? Mass = 1 amuCharge = +1 Location = Nucleus PROTON

22. What particle? Mass = 1 amuCharge = 0 Location = Nucleus NEUTRON

23. What part of the atom? This part of the atom contains most of the mass and has a positive charge NUCLEUS

24. This radioactive particle can penetrate the first few millimeters of skin but it stopped by wood. It can cause burns, tissue damage and radiation sickness. Beta Particle

25. This is the weighted average mass of all isotopes of an element. Atomic Mass Atomic mass

26. Atoms of the same element with different numbers of neutrons Isotopes

27. Beta Particle

28. Alpha Particle

29. The mass of a specific isotope Mass Number (# protons + # neutrons)

30. This radioactive particle has the lowest energy; can be stopped by paper or clothing; can cause lung cancer if inhaled. Alpha Particle

31. Gamma Ray

32. This is the number of protons in an atom. Atomic Number Atomic number

33. This radioactive particle can pass through your body and is stopped by lead or several feet of concrete. It causes cancer, radiation sickness, tissue and organ damage. Gamma Ray

34. Isotope Name 2: What is the “3” and the “1”? 3 is the mass number 1 is the atomic number

35. Light/Quantized Energy- $100 When an electron is energized, it jumps up to a higher energy level. When it jumps down, it releases…. BACK a photon

36. ELECTROMAGNETIC sPECTRUM - $300 Which of the following forms of radiation has the greatest amount of energy? a) microwaves b) radio waves c) gamma waves BACK c) Gamma waves

37. Electron configuration - $200 The maximum number of electrons which can occupy an orbital is: BACK 2! 1s2s 2p Each box represents 1 orbital

38. Electron configuration - $300 What element has this electron configuration? 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 4 BACK Cr – Chromium (atomic no. 24)

39. Electron configuration - $500 Sublevel “d” has ___ orbitals. BACK 5! (10 electrons)

40. Electron configuration - $1000 The most common atom of an element has 2 electrons in the 1 st energy level, 8 electrons in the 2 nd energy level, and 3 electrons in the 3 rd energy level. What is the electron configuration? BACK 1s 2 2s 2 2p 6 3s 2 3p 1 and Bonus question (worth 50 pts): What is the element? Aluminum

41. Valence Electrons - $100 Where are valence electrons located in the atom? BACK In the s and p sublevels in the highest energy level (outermost shell)

42. Valence Electrons - $200 How many valence electrons in magnesium (Mg) BACK 1s 2 2s 2 2p 6 3s 2 2 valence electrons

43. Valence Electrons - $1000 How many valence electrons in bismuth (Bi)? BACK [Xe] 6s 2 4f 14 5d 10 6p 3 5 valence electrons

44. Name That Element- $300 BACK What is the electron configuration for a magnesium (Mg) atom? 1s 2 2s 2 2p 6 3s 2

45. MORE electron configs - $100 What is the correct orbital diagram for oxygen? a) b) c) BACK a) 1s 2s 2p

46. MORE electron configs - $200 BACK [Ne]3s 2 3p 4 What is the noble gas shorthand for sulfur: 1s 2 2s 2 2p 6 3s 2 3p 4

47. 1. Elements in the periodic table are organized by increasing____________. (A) Atomic mass (B) Valence number (C) Atomic number (D) Atomic radius

48. 2. Elements in the same group have the same ______________. (A) atomic radius (B) energy level (C) nuclear charge (D) number of valence electrons

49. An representative element has the noble gas electron configuration [Ne]3s 2 3p 4. 7. Classify the element as (A) metal (B) non-metal (C) metalloid

50. 16. K (Potassium) A. metal B. non-metal C. metalloid

51. 23. All the atoms of an element contain the same number of what particle? (A) Protons (B) Neutrons (C) Electrons (D) Quarks

52. 26. Which atom has the SMALLEST atomic radius? Ni or K

53. 26. Which atom has the SMALLEST atomic radius? Ne or C

54. 27. Which of the following is true of anions (nonmetal ions)? (A) They are larger than their atoms (B) They are smaller than their atoms (C) There is no difference in size between the ions and their atoms (D) The atoms from which they formed may be larger or smaller, no prediction can be made

55. 28. Which of the following is true of cations (metal ions)? (A) They are larger than their atoms (B) They are smaller than their atoms (C) There is no difference in size between the ions and their atoms (D) The atoms from which they formed may be larger or smaller, no prediction can be made

56. 29. As you move across the periodic table from right to left, what is the trend for ionic size? (A) increases (B) decreases (C) remains constant (D) varies at random

57. 29. As you move across the periodic table from TOP TO BOTTOM, what is the trend for ionic size? (A) increases (B) decreases (C) remains constant (D) varies at random

58. 30. High electrical conductivity, shiny, and malleability are characteristics of (A) non-metals (B) noble gases (C) metals (D) metalloids

59. Which of these elements has the highest electronegativity? Br or Cl or I

60. 33. Which element on the periodic table would we predict to have the greatest ionization energy? (A) Fr (B) Rn (C) He (D) H

61. Valence Electrons - $1000 Name that ion: What is the name and symbol of an ion in Period 4 whose atom has 7 valence electrons? BACK Bromide, Br -

62. IONIC COMPOUNDS - $100 When forming ions, metals always ______ electrons and nonmetals always _____electrons. BACK Metals lose => Cations Nonmetals gain => Anions

63. IONIC COMPOUNDS - $200 What is the chemical formula for an ionic compound containing arsenic and aluminum? BACK AsAl

64. IONIC COMPOUNDS - $300 What is the formula for an ionic compound with magnesium and chlorine? BACK Magnesium => MgCl 2

65. I Want to be a Noble Gas - $200 What noble gas configuration does the ion Ca 2+ have? BACK Argon 1s 2 2s 2 2p 6 3s 2 3p 6

66. I Want to be a Noble Gas - $500 Name this Ion: -Resembles krypton’s electron configuration -Is in period 4 -Has a charge of -2 BACK Selenium - Selenide Se 2-

67. Name that ION - $100 LiF BACK Lithium Fluoride

68. Name that ION - $200 BACK Sodium Carbonate Na 2 CO 3

69. Name that ION - $300 KNO 2 BACK Potassium Nitrite

70. Name that ION - $1000 PbCl 2 BACK lead (II) chloride

71. Molecules If atoms share THREE pairs of valence electrons it is a _______________________ bond. TRIPLE COVALENT

72. Which of the following is an ionic compound? a)CO b)H 2 O c)SO 2 d)H 2 S e)LiF e) LiF is ionic

73. A covalent bond between 2 atoms of the same element is a)Very polar b)Moderately polar c)Ionic d)Nonpolar d) nonpolar

74. Diphosphorus pentachloride What is the name of P 2 Cl 5 ?

75. Nitrogen tribromide What is the name of NBr 3 ?

76. Calcium Phosphide What is the name of Ca 3 P 2

77. Calcium Phosphate What is the name of Ca 3 ( PO 4 ) 2

78. Calcium Phosphite What is the name of Ca 3 ( PO 3 ) 2

79. Al(OH) 3 Write the formula for aluminum hydroxide

80. BaCl 2 Write the formula for Barium Chloride

81. Na 2 S Write the formula for Sodium Sulfide

82. SO 3 Write the formula for Sulfur Trioxide

83. N8F5N8F5 Write the formula for Octanitrogen Pentafluoride