Sem Starter ChEARS 2016 Quiz Bee

Sem Starter ChEARS 2016 Organic Chemistry Quiz Bee Questions 1. He proved that organic compounds can be synthesized in the laboratory by converting ammonium cyanate into urea. a. Lewis

b. Wohler

c. Chevreul

d. Kekule

2. These are compounds that have the same numbers and kinds of atoms but differ in atom arrangements or connections. a. isomers

b. conjugates

c. chains

d. paraffins

3. What is the formal charge of C in CH4 (methane)? 0 4. It is the functional group that carries a sulfur connected to two carbons and an oxygen. a. thiol

b. sulfide

c. disulfide

d. sulfoxide

5. This is the region of zero electron density that separates the lobes of p-orbitals. a. nucleus

b. node

c. center

d. nuclear center

6. According to valence bond theory, only through what type of interference will the electrons be bonded? constructive interference 7. Draw the condensed structure for octane. CH3CH2CH2CH2CH2CH2CH2CH3 8. True or False. When drawing skeletal structures, the atoms other than carbon and hydrogen are not shown. False 9. Given the following compounds and their pKa values, identify the strongest acid. a. H2O (15.74)

b. HCl (-7.0)

c. HNO3 (-1.3)

d. CH3COOH (4.76)

c. Bronsted-Lowry Acid

d. Bronsted-Lowry Base

10. It is the substance that accepts hydrogen ion. a. Lewis Acid

b. Lewis Base

11. True or False. Pi bond is where the atomic orbitals of the electrons perform the side-to-side overlapping. True 12. True or False. The shape of the d orbital is elongated sphere. False 13. Ethanol, a common agent in drinks, carries what type of functional group? Alcohol

14. What is the hybridization of the carbon in methane (CH4)? sp3 15. From where did Chevreul prepared his soap in 1816? a. glycerin

b. fatty acids

c. animal fat

d. sodium hydroxide

16. These are saturated hydrocarbons. a. alkanes

b. alkenes

c. alkynes

d. none of the choices

17. Are 3-methylpentane and 2,3-dimethylbutane isomers? Yes. 18. IUPAC stands for what? a. b. c. d.

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19. It is the functional group that carries an oxygen attached between two carbons (C-O-C). a. ether

b. ester

c. epoxide

d. halide

20. It is the functional group that carries a carbon double-bonded to an oxygen and single-bonded to a hydrogen. a. aldehyde

b. anhydride

c. amide

d. halide

21. It is the functional group that carries a carbon double-bonded to an oxygen and single-bonded to another carbon. a. ether

b. ester

c. thioester

d. ketone

22. What type of carbon is the carbon in methane (CH4)? a. primary

b. secondary

c. tertiary

d. quaternary

23. It is a group of atoms within a molecule that has a characteristic chemical behavior. Functional Group 24. True or false. The resonance hybrid is more stable than any individual resonance form. True 25. Dipole moments are expressed in what unit? Debye