SAMPLE FINAL 3150:110

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Leo Clarence Tyler
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1 SAMPLE FINAL 3150:110 Print out a copy. Answer the questions on your own. Check the answers in GOBC Ans.pdf. Good luck! 1. Given the following: Element Electronegativity 2.1 Li 1.0 C 2.5 F 4.0 Al Fe 1.6 Predict which of these are non-polar covalent compounds: a) All are b) CF 4 only c) AlF 3 only d) None is Li, Fe 3, AlF 3, CF 4 2. Which of the following is an example of a mole? a) 6.00 g of carbon b) 12.0 g of carbon c) 16.0 g of O 2 d) g of O 2 3. Consider the following chemical and physical phenomena: A. Food is digested B. A deck of cards is shuffled C. Droplets of water form on a cold glass D. ell freezes over Which represent(s) an increase in entropy? a) A and B only b) B and D only c) A, B, and D only d) C only

2 2 4. ow much carbon monoxide do you need to produce 1.00 mol of carbon dioxide by the reaction 2CO + O 2 2CO 2 a) 14.0 g b) 28.0 g c) 44.0 g d) 56.0 g 5. Which of the following are endothermic? a) A and D only b) B and C only c) B and D only A. Fusion B. Sublimation C. Evaporation D. Condensation 6. A 50.0-mL portion of an aqueous solution of glucose is diluted to 200 ml. If the resulting [glucose] is M, the original solution was a) 1.00 M b) M c) M d) M 7. A sealed container at 25 C is pressurized with CO 2 to 2.5 atm. If the container is then heated to 250 C. how high is the final pressure? a) 250 atm b) 4.4 atm c) 32 atm d) 25 atm 8. ow many neutrons are in the following atom? a) 50 b) 65 c) 115 d) X 50

3 3 9. Which of the following represent isotopes? a) There are no isotopes. b) A and D only c) B and C only d) A and C only 70 X X X X 33 A B C D 10. ow much ethyl ether (C 4 10 O) is 0.20 mol? a) 0.8 g b) 9.6 g c) 14.8 g d) 29.6 g 11. Consider the reaction: 2Li + I 2 2LiI If you have a mol sample of lithium, how much iodine do you need to react completely with the lithium? a) 3.46 g b) 6.93 g c) 7.20 g d) g 12. What volume of M KO will react with exactly 24.0 ml of M according to the reaction: a) 20.0 ml b) 24.0 ml c) 25.0 ml d) 28.8 ml 13. Catalysts work by KO + K + 2 O a) Using reactants more efficiently b) Requiring no activation energy for the reaction to proceed b) Providing reaction pathways with lower activation energies c) Releasing more energy

4 4 14. What would happen to the equilibrium 2A + B D if some B were added? a) D decomposes to make more A and B b) K eq changes c) A and B combine to make more D 15. According to ønsted theory, a base is a) Lower than a baritone b) A proton acceptor c) A proton donor 16. The p of a water solution with [O ] = is a) 1.50 b) 3.42 c) 5.19 d) A solution that contains less than the maximum amount of solute that can be dissolved is said to be a) Unsaturated b) Satiated c) Supersaturated d) Saturated 18. Which of the following characteristics should an isotope have if it is to be used for internal radiation therapy? a) A and C b) A and D c) B and C d) B and D A. Short t ½ B. Long t ½ C. Rapidly decaying daughter nuclei D. Stable daughter nuclei 19. What change takes place when nitrogen attains a noble gas configuration? a) It gains 3 electrons b) It loses 3 electrons c) It loses 5 electrons d) It gains 8 electrons

5 5 20. The radiation unit that is useful in describing biological damage is the a) Curad b) Rem c) Rad d) Roentgen 21. Which of the following can have a geometric (cis or trans) isomer? A. C 3 C C B. C. C 3 C C D. C C 3 C a) A and B only b) C and D only c) A, B, and C only d) All can 22. In what way(s) do the physical properties of alkenes and aromatic hydrocarbons differ from those of alkanes? a) Actually, they don t differ very much b) They are more chemically reactive c) Alkenes and aromatic hydrocarbons are not hydrophobic, alkanes are d) Alkanes are less dense than water 23. Fill in the blank: is a major reaction of aromatic hydrocarbons. a) Addition b) Substitution c) Sublimation d) Volatility 24. You are given a vial containing a liquid hydrocarbon. You add several drops of bromine. The color of the bromine disappears as you add it. What is a possible explanation for this observation? a) The vial probably contains an alkane b) The vial probably contains an alkene c) The vial probably contains benzene

6 6 25. Give the correct IUPAC name for C 2 C C C 2 a) 3,4-Dimethylhexane b) Troy Mcure c) 3-Ethyl-4-methylpentane d) 2-Ethyl-3-methylpentane 26. Alkanes and cycloalkanes are a) Polar b) Denser than water c) Soluble in non-polar solvents d) Soluble in polar solvents 27. Compared to other classes of organic molecules, alkanes and cycloalkanes are a) About as chemically reactive as alkenes b) Chemically unreactive in biological systems c) More chemically reactive in biological systems d) More polar, but less chemically reactive 28. Consider the following: O O O A B C Which is a possible product of the reaction of cyclohexene and water in the presence of an acid catalyst? a) A b) B c) C d) None of these 29. Geometric isomers are compounds that a) ave different structural formulas and different spatial arrangements of atoms b) Can be interconverted by rotation around single carbon-carbon bonds c) ave the same structural formula, but different placement of atoms or groups of atoms on a double bond or ring d) ave the same structural formula, but different sizes of rings

7 7 COMPLETE QUESTIONS BY SUPPLYING TE MISSING REACTANT OR PRODUCT INDICATED BY TE QUESTION MARK: 30.? C 2 C CC 2 C 2 C 2 C 2 C 2 a) 2 b) 2 O c) d) Fe 3? a) b) c) No reaction 32. 2? a) b) c) d) 33. The reaction in Question 32 is an example of a) ydration b) ydrogenation c) alogenation d) Substitution

8 8 34. The property that gives benzene and related compounds extra chemical stability is a) Polarity b) Resonance c) A well-balanced diet d) Isomerism 35. Name the following: a) m-dichlorobenzene b) cis-dichlorobenzene c) Timmy d) 1,5-Dichlorobenzene 36. Which of the following is a reason why there are so many organic compounds? a) Carbon gains or loses 4 valence electrons to form ions b) Carbon atoms can form chains and networks c) Carbon atoms can t easily bond with each other d) Carbon forms only single bonds with other atoms 37. Structural isomers are compounds that a) Interchange by rotation around single bonds b) ave the same chemical formula, but different structures c) ave different structural formulas d) ave different chemical formulas, but the same structure 38. Based on structure alone, which of the following would you predict has the highest boiling point? a) C 2 C 2 b) C 2 C=C 2 c) C 2 C 2 O d) C 2 C 2 S 39. Alkanes are a) ydrocarbons with single bonds only b) ydrocarbons with at least one C=C bond c) ydrocarbons with carbon-carbon triple bonds d) Unsaturated hydrocarbons

9 9 40. Are the following compounds isomers? C 2 C C( ) a) Yes b) No c) Maybe

1. Atomic Concepts. The student should be able to: relate experimental evidence to models of the atom

1. Atomic Concepts. The student should be able to: relate experimental evidence to models of the atom 1. Atomic Concepts The modern model of the atom has evolved over a long period of time through the work of many scientists. Each atom has a nucleus, with an overall positive charge, surrounded by negatively