1. Review Game 2.3 Polarity & Smell

2. rocket : space :: submarine : 1.sea 2.land 3.air 4.cave Countdown 10 Response Grid

3. Why do molecules of certain substances attract to each other and to a balloon? Countdown 20 Response Grid 1.They are positively charged 2.They are negatively charged 3.They have protons and electrons 4.They have partial charges

4. What does it mean to be polar? Countdown 20 Response Grid 1.To be positively charged 2.To be negatively charged 3.To have a positively charged end and a negatively charged end 4.Polar is the new “cool”

5. Polar molecules will… Countdown 20 Response Grid 1.Not smell 2.Spread out on wax paper 3.Repel from a charged balloon 4.Be symmetrical 5.All of the above 6.None of the above

6. What type of molecule will always be nonpolar? Countdown 20 Response Grid 1.Asymmetrical 2.Diatomic 3.Linear 4.Tetrahedral 5.Pyramidal 6.Trigonal planar 7.Bent

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8. What percentage of your current points would you like to wager on the next question? 1.0% 2.25% 3.50% 4.75% 5.100% Countdown 10 Response Grid

9. Which is not one of the 7 diatomic molecules? Countdown 20 Response Grid 1.H 2 2.I 2 3.O 2 4.N 2 5.C 2 6.Br 2 7.F 2 8.Cl 2

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11. A carbon-sulfur bond would be classified as… Countdown 20 Response Grid 1.Nonpolar 2.Somewhat polar 3.Very polar 4.Ionic

12. The bond in CaCl 2 would be classified as… Countdown 20 Response Grid 1.Nonpolar 2.Somewhat polar 3.Very polar 4.Ionic

13. A carbon-oxygen bond would be classified as… Countdown 20 Response Grid 1.Nonpolar 2.Somewhat polar 3.Very polar 4.Ionic

14. A phosphorus-fluorine bond would be classified as… Countdown 20 Response Grid 1.Nonpolar 2.Somewhat polar 3.Very polar 4.Ionic

15. Which element has the lowest electronegativity? (Elements are arranged in the order they appear on the periodic table.) Countdown 20 Response Grid 1.Be 2.Sr 3.B 4.I

16. Which element has the greatest electronegativity? (Elements are arranged in the order they appear on the periodic table.) Countdown 20 Response Grid 1.N 2.P 3.As 4.Sb

17. Which molecule is nonpolar? Countdown 20 Response Grid 1.PH 3 2.CHBr 3 3.C 2 H 6 4.OF 2

18. Which molecule is polar? Countdown 20 Response Grid 1.C 2 HF 2.CO 2 3.CH 4 4.O 2

19. Which molecule will not have a smell? Countdown 20 Response Grid 1.Small nonpolar 2.Small polar 3.Medium nonpolar 4.Medium polar 5.All of the above 6.None of the above

20. Which molecule will have a smell? Countdown 20 Response Grid 1.SiF 4 2.CO 2 3.C 8 H 16 O 2 4.C 21 H 38 O 5 5.C 46 H 92 O 2

21. Why is CF 4 nonpolar considering the bonds are highly polar? Countdown 20 Response Grid 1.The electrons are not shifted to just one side 2.The bond dipoles cancel out 3.The partial positive is in the center not the outside 4.The molecule is symmetrical 5.All of the above 6.None of the above

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23. What percentage of your current points would you like to wager on the next question? 1.0% 2.25% 3.50% 4.75% 5.100% Countdown 10 Response Grid

24. Which would you predict to have a smell? Countdown 20 Response Grid 1.Paper clip 2.Styrofoam 3.Propane 4.Water 5.Rust 6.Kerosene

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26. Electrons are shared unequally in a(n)… Countdown 20 Response Grid 1.Polar covalent bond 2.Nonpolar covalent bond 3.Ionic bond 4.Metallic bond 5.All of the above 6.None of the above

27. How can you smell a solid bar of chocolate? Countdown 20 Response Grid 1.The molecules melt 2.Chocolate boils at room temperature 3.The molecules are polar and dock with receptor sites 4.All of the above 5.None of the above

28. Methanol is attracted to a charged balloon and beads up on wax paper. Methanol must… Countdown 20 Response Grid 1.Have a smell 2.Be polar 3.Be nonpolar 4.Be ionic 5.Have a bipolar disorder

29. Where is the partial positive in this molecule? Countdown 20 Response Grid 1.C 2.Cl 3.Both C and Cl 4.Nowhere; it’s nonpolar.

30. Why do polar molecules have a smell? Countdown 20 Response Grid 1.They have the right shape to dock with receptor sites 2.They have a partial charge to dock with receptor sites 3.They vaporize easier than nonpolar 4.All of the above 5.None of the above

31. Where is the partial negative in this molecule? Countdown 20 Response Grid 1.H 2.C 3.O 4.All of the above 5.None of the above

32. Is this molecule polar or nonpolar? Countdown 20 Response Grid 1.Polar 2.Nonpolar 3.Need more info

33. Why do large molecules usually not have a smell? Countdown 20 Response Grid 1.They are nonpolar. 2.They are usually symmetrical. 3.They cannot fit into receptor sites. 4.They don’t vaporize easily. 5.All the good scents were taken by Calvin Klein.

34. Is HCN polar or nonpolar? Countdown 20 Response Grid 1.Polar 2.Nonpolar

35. Is CF 2 Cl 2 polar or nonpolar? Countdown 20 Response Grid 1.Polar 2.Nonpolar

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37. What percentage of your current points would you like to wager on the next question? 1.0% 2.25% 3.50% 4.75% 5.100% Countdown 10 Response Grid

38. Is this molecule polar or nonpolar? Countdown 20 Response Grid 1.Polar 2.Nonpolar

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