This document contains a chemistry jeopardy game covering topics from 5 units: 1. Measurements and calculations 2. States of matter and properties 3. Atomic structure 4. Radioactivity 5. Periodic trends The questions test knowledge of concepts like significant figures, conversions, physical and chemical properties, atomic structure, radioactive decay, electron configurations, and trends in atomic radius and ionization energy across the periodic table.

1. Chemistry Semester 1 Jeopardy

2. Unit 1 100 Unit 5 Unit 4 Unit 3 Unit 2 200 300 400 500 100 100 100 100 200 300 400 500 200 300 400 500 200 200 300 300 400 400 500 500

3. Identify this piece of equipment A Unit 1 for 100

4. Graduated cylinder

5. How many significant figures are in 0.0024030? A Unit 1 for 200

6. How many significant figures are in 0.00 24030 ? Five significant figures

7. Convert 150 mm into km A Unit 1 for 300

8. Convert 150 mm into km 0.000150 km

9. What is the sum of 0.04 + 1.5 + 137 to the correct number of significant figures? A Unit 1 for 400

10. What is the sum of 0.04 + 1.5 + 137 to the correct number of significant figures? 0.04 + 1.5 + 137 = 138.54  139

11. Convert 12 cm into inches using the conversion 1 in = 2.54 cm A Unit 1 for 500

12. Convert 12 cm into inches using the conversion 1 in = 2.54 cm 12 cm * = 4.7 in

13. Color is what type of property? A Unit 2 for 100

14. Color is what type of property? Physical Property

15. Freezing of water is what kind of change? A Unit 2 for 200

16. Freezing of water is what kind of change? Physical change

17. Define heterogeneous A Unit 2 for 300

18. Define heterogeneous A mixture with two or more distinctive parts (salad, pepperoni pizza)

19. What are the five ways to verify a chemical reaction? A Category 2 for 400

20. What are the five ways to verify a chemical reaction? Light emitted Heat emitted/absorbed Precipitate formed Bubbles produced Color Change

21. A Unit 2 for 500 Identify the areas of the graph Boiling Melting Freezing Contensing Solid Liquid Gas

22. Solid Gas Liquid Boiling / Condensing Melting / Freezing

23. What is a positive ion called? A Unit 3 for 100

24. What is a positive ion called? A cation

25. Which particles are responsible for the mass of an atom? A Unit 3 for 200

26. Which particles are responsible for the mass of an atom? Protons & neutrons

27. How many neutrons are present in an atom of carbon with a mass of 14? A Unit 3 for 300

28. How many neutrons are present in an atom of carbon with a mass of 14? # neutrons = mass – atomic # 8 = 14 - 6

29. What is the correct symbol for an element with 11 protons, 10 electrons and 9 neutrons? A Unit 3 for 400

30. What is the correct symbol for an element with 11 protons, 10 electrons and 9 neutrons?

31. Explain Rutherford’s Gold Foil experiment and what he discovered about the atom A Unit 3 for 500

32. Explain Rutherford’s Gold Foil experiment and what he discovered about the atom Since most of the alpha particles passed through the foil, atoms must be mostly empty space. Some of the positively charged particles bounced back showing that there was a small dense area of positive charge with mass in the center of the atom (the nucleus)

33. What part of a radioactive atom is unstable? A Unit 4 for 100

34. What part of a radioactive atom is unstable? The nucleus

35. The half life of radon-222 is 20 minutes. After how many minutes is there only 12.5% of the parent isotope left? A Unit 4 for 200

36. The half life of radon-222 is 20 minutes. After how many minutes is there only 12.5% of the parent isotope left? Amount Half life Time 100% 0 0 50% 1 20 min 25% 2 40 min 12.5% 3 60 min

37. What particle is emitted when cabon-14 decays into nitrogen-14? A Unit 4 for 300

38. What particle is emitted when cabon-14 decays into nitrogen-14? A beta particle C  N + e

39. Which two types of decay produce the same product? A Unit 4 for 400

40. Which two types of decay produce the same product? Electron capture and positron emission C + e  B C  B + e

41. Describe the mass and atomic number of an alpha particle AND its penetrating power A Unit 4 for 500

42. Describe the mass and atomic number of an alpha particle AND its penetrating power Mass (protons + neutrons) = 4 Atomic Number (protons) = 2 Penetrating Power = low (too massive)

43. What is the charge on an atom in group 5? A Unit 5 for 100

44. What is the charge on an atom in group 5? An atom in group 5 has 5 valence electrons, it wants to gain 3 more. The charge will be -3

45. Give the electron configuration for Bromine A Unit 5 for 200

46. Give the electron configuration for Bromine Full: 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 5 Noble Gas Shorthand: [Ar] 4s 2 3d 10 4p 5

47. What happens to atomic radius (size) moving down a group? WHY? A Unit 5 for 300

48. What happens to atomic radius (size) moving down a group? Down a group the radius increases because each new period requires the use of new orbitals (1s to 2s to 3s…etc)

49. What happens to the atomic radius (size) moving across a period to the right? WHY? A Unit 5 for 400

50. What happens to the atomic radius (size) moving across a period to the right? The size of an atoms gets smaller moving across a period because the number of protons increase, pulling the electrons in the orbital in tighter

51. Is the trend for ionization energy the same or the opposite of the trend for atomic radius? WHY? A Unit 5 for 500

52. Is the trend for ionization energy the same or the opposite of the trend for atomic radius? WHY? The trend for ionization energy is OPPOSITE ; as the size (radius) of the atom increases it is easier to remove an electron- therefore the energy required to form an ion is lower