2. Jeopardy AtomsNature of Matter Radio- activity Periodic Table Phases of Matter Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400 Q $500 Final Jeopardy

3. $100 Question from Atoms What are the numbers of protons, neutrons, and electrons in an isotope of titanium with a mass number of 50? 22 p, 22 n, 28 e 28 p, 22 n, 22 e 50 p, 22 n, 50 e 22 p, 28 n, 22 e Virginia 07

4. $100 Answer from Atoms 22 p, 28 n, 22 e

5. $200 Question from Atoms A. 88 B. 132 C. 220 D. 308 Virginia 07

6. $200 Answer from Atoms 88

7. $300 Question from Atoms Virginia 07 What are shared in covalent bonds? A. Cations B. Protons C. Electrons D. Anions

8. $300 Answer from Atoms Electrons

9. $400 Question from Atoms When compared to sulfur-32, sulfur-34 has more — Virginia 07

10. $400 Answer from Atoms neutrons

11. $500 Question from Atoms Which compound has a covalent bond? A.CaI 2 B.KBr C.NaCl D.NO Virginia 07

12. $500 Answer from Atoms NO

13. $100 Question from Nature of Matter The picture shows a cube that contains 20 mL of a solution. The solution has a mass of 40 grams. What is the density in g/mL of this solution? Texas 06

14. $100 Answer from Nature of Matter 2g/ml

15. $200 Question from Nature of Matter Which of the following chemical equations is balanced correctly?. Mass 07

16. $200 Answer from Nature of Matter

17. $300 Question from Nature of Matter The figure below represents a reaction. What type of reaction is shown? Mass 07

18. $300 Answer from Nature of Matter synthesis

19. $400 Question from Nature of Matter Under certain conditions, solid magnesium (Mg) and solid sulfur (S) can combine and form magnesium sulfide (MgS). The Equation for thisreaction is shown below. Mg(s) +S(s) → MgS(s) What is the oxidation number for Mg in MgS in this reaction?

20. $400 Answer from Nature of Matter + 2 Mass 07

21. $500 Question from Nature of Matter When the equation is correctly balanced, the coefficient of H 2 SO 4 is — Virginia 07

22. $500 Answer from Nature of Matter 3

23. $100 Question from Radiation The three main types of nuclear radiation are alpha, beta, and gamma. List the three types of radiation from highest penetrating power to lowest penetrating power? Mass 07

24. $100 Answer from Radiation gamma, beta, alpha

25. $200 Question from Radiation New York 08 What is a problem commonly associated with nuclear power facilities? A. A small quantity of energy is produced. B. Reaction products contribute to acid rain. C. It is impossible to control nuclear fission. D. It is difficult to dispose of wastes.

26. $200 Answer from Radiation It is difficult to dispose of wastes.

27. $300 Question from Radiation New York 08 One benefit of nuclear fission reactions is A. nuclear reactor meltdowns B. storage of waste materials C. biological exposure D. production of energy

28. $300 Answer from Radiation production of energy

29. $400 Question from Radiation Mass 06 The final elements produced by radioactive decay differ from the original radioactive elements because the nuclei of the final elements are always A. more stable. B. increased in mass. C. half as radioactive. D. positively charged.

30. $400 Answer from Radiation more stable

31. $500 Question from Radiation New York 09 An original sample of the radioisotope fluorine-21 had a mass of 80.0 milligrams. Only 20.0 milligrams of this original sample remain unchanged after 8.32 seconds. What is the half-life of fluorine-21? A. 1.04 s B.2.08 s C.4.16s D. 8.32 s

32. $500 Answer from Radiation 4.16s

33. $100 Question from Periodic Table New York 09 What can be determined if only the atomic number of an atom is known? A. the total number of neutrons in the atom, only B. the total number of protons in the atom, only C. the total number of protons and the total number of neutrons in the atom D.the total number of protons and the total number of electrons in the atom

34. $100 Answer from Periodic Table The total number of protons and the total number of electrons in the atom

35. $200 Question from Periodic Table How many valence electrons are there in the elements in family 16 of the periodic table? Mass 07

36. $200 Answer from Periodic Table They have six valence electrons

37. $300 Question from Periodic Table New York 07 Which element has both metallic and nonmetallic properties? A.Rb (3) Si B. Rn C.Si D. Sr

38. $300 Answer from Periodic Table Si

39. $400 Question from Periodic Table Mass 06 The label below contains information about an unknown metal. How many valence electrons does the unknown metal have? UNKNOWN METAL M Most common salts MP 3 M 2 O 3 MCl 3

40. $400 Answer from Periodic Table 3

41. $500 Question from Periodic Table A particle has 36 electrons, 49 neutrons, and 38 protons. What type of particle is it and what is its charge? Mass 06

42. $500 Answer from Periodic Table an ion with a charge of + 2 (a cation)

43. $100 Question from Phases of Matter Which of these statements describes what happens to the molecules of a solid as the temperature is lowered to absolute zero? A They begin to take up more space. B They become farther apart. C Their kinetic energy gradually increases to a maximum. D Their motion gradually decreases and eventually stops. Virginia 07

44. $100 Answer from Phases of Matter Their motion gradually decreases and eventually stops.

45. $200 Question from Phases of Matter Which of these best describes sublimation? A. A solid changing to a liquid phase B. A solid changing to a gaseous phase C. A gas filling the space in its container D. A liquid taking the shape of its container Virginia 07

46. $200 Answer from Phases of Matter A solid changing to a gaseous phase

47. $300 Question from Phases of Matter Virginia 07 Which of the following is not true of a sample of gas as it is heated in a rigid, closed container? A. The pressure of the molecules increases. B. The average speed of the molecules increases. C. The average distance between molecules increases. D. The number of collisions between molecules increases.

48. $300 Answer from Phases of Matter The average distance between molecules increases.

49. $400 Question from Phases of Matter The illustration below shows a hot-air balloon. The pilot can change the altitude of the hot-air balloon by changing the temperature of the gas inside the balloon. When the gas is heated, the balloon rises. Which of the following best explains this phenomenon? A. Heating the gas reduces its pressure. B. Heating the gas decreases its density. C. Heating the gas decreases its molecular motion. D. Heating the gas reduces the frequency of the gas molecules’ collisions. Mass 06

50. $400 Answer from Phases of Matter Heating the gas decreases its density.

51. $500 Question from Phases of Matter The relationship between the pressure and volume of a gas at constant temperature is A. numerically equivalent B. inversely proportional C. positively correlated D. totally unrelated Virginia 05

52. $500 Answer from Phases of Matter inversely proportional

53. Final Jeopardy Which two elements have the most similar chemical properties? Justify your answer. A. Be and Mg B.Ca and Br C.Cl and Ar D. Na and P

54. Final Jeopardy Answer Be and Mg have the most similar properties. Each is a member of Group 2 (the Alkaline Earth Metals Group) and has 2 valence electrons. The remaining choices are in different families and have different numbers of valence electrons Ca (2 )and Br (7) valence electrons Cl (7) and Ar (8) valence electrons Na (1) and P (5) valence electrons