Q&A Hero

Q: According to the IUPAC convention for chemical naming, which part of a hydrocarbon is selected as the main chain for a hydrocarbon chain? A) the most highly branched chain B) the shortest chain C) the longest chain drawn in a straight line D) the longest continuous chain, regardless of bends E) the chain with the most substituted carbons in it

Q: What is the name for this three-carbon alkyl group?A) n-propylB) iso-propylC) butylD) iso-butylE) ethyl

Q: What is the name for a three-carbon alkyl group? A) methyl B) ethyl C) propyl D) butyl E) pentyl

Q: What is the name for a two-carbon alkyl group? A) methyl B) ethyl C) propyl D) butyl E) pentyl

Q: What is the name for a one-carbon alkyl substituent? A) methyl B) ethyl C) propyl D) butyl E) pentyl

Q: What is the IUPAC name for this alkane? A) 2-ethyl-3-methylpentane B) 4-ethyl-3-methylpentane C) 3, 4-dimethylhexane D) 2, 3-diethylbutane E) octane

Q: What is the name of the alkyl group CH3-CH2-CH2-? A) propane B) methyl C) ethane D) ethyl E) propyl

Q: What is the name of this compound? A) 1,1-dichlorobutane B) 1,2,-dichlorobutane C) 1,3-dichlorobutane D) 1,4-dichlorobutane E) dichlorobutane

Q: Which of the following compounds could have the molecular formula C7H16? A) hexane B) pentane C) 2-methylheptane D) 2,3-dimethylpentane E) 3-ethylhexane

Q: What is the IUPAC name of this alkane? A) 4-ethyl-2,2-dimethylpentane B) 2-ethyl-4,4-dimethylpentane C) 2,2,4-trimethylhexane D) 2-ethyl-2,2-dimethylpentane E) 3,5,5-trimethylhexane

Q: What is the IUPAC name for the following? A) 1,2-dichloro-3-methylpentane B) 1,2-dichloro-3-methylcyclopentane C) 1-methyl-2,3-dichlorocyclopentane D) 3-methyl-1,2-dichlorocyclopentane E) 1,2-dichloro-3-methylcyclobutane

Q: What is the name for the following? A) hexane B) dimethylbutane C) 3,3-dimethylbutane D) 2,2-dimethylbutane E) 2-dimethylbutane

Q: What is the name of ? A) pentane B) methylpentane C) 2-methylpentane D) 4-methylpentane E) hexane

Q: What is the IUPAC name for Cl-CH2 -CH2 - CH2-Cl? A) 1,3-dichloropropane B) 1,1-dichloropropane C) dichloropropane D) 1,3-dichlorobutane E) propane dichloride

Q: What is the IUPAC name for the following? A) 1-chlorobutane B) 2-chlorobutane C) 3-chlorobutane D) 2-chloropropane E) chlorobutane

Q: What is the IUPAC name for the following?A) 1-methylbutaneB) 4-methylbutaneC) pentaneD) butaneE) hexane

Q: What is the IUPAC name for the following?A) 4-methylhexaneB) 3-methylhexaneC) heptaneD) methylhexaneE) 2-methylhexane

Q: Which of the following pairs of compounds are structural isomers?A) B) ClCH2CH2CH2CH3 and CH3CH2CH2CH2ClC) D) E)

Q: The IUPAC name for CH3 -Cl is A) methyl chloride. B) chloromethane. C) methanechlorine. D) chloroethane. E) methane chloride.

Q: What is the name of this compound? A) cyclopentane B) cyclohexane C) cycloheptane D) cyclooctane E) pentane

Q: What is the name of this compound? A) cyclopentane B) cyclohexane C) cycloheptane D) cyclooctane E) hexane

Q: What is the name for a ten-carbon continuous-chain alkane? A) hexane B) heptane C) octane D) nonane E) decane

Q: What is the name for a nine-carbon continuous-chain alkane? A) hexane B) heptane C) octane D) nonane E) decane

Q: What is the name for an eight-carbon continuous-chain alkane? A) hexane B) heptane C) octane D) nonane E) decane

Q: What is the name for a seven-carbon continuous-chain alkane? A) hexane B) heptane C) octane D) nonane E) decane

Q: What is the mame for a six-carbon continuous-chain alkane? A) hexane B) heptane C) octane D) nonane E) decane

Q: What is the name for a five-carbon continuous-chain alkane? A) methane B) ethane C) propane D) butane E) pentane

Q: What is the name for a four-carbon continuous-chain alkane? A) methane B) ethane C) propane D) butane E) pentane

Q: What is the name of this compound? A) ethane B) propane C) butane D) pentane E) hexane

Q: What is the name of CH3- CH2- CH2- CH3? A) ethane B) propane C) butane D) pentane E) hexane

Q: What is the name of this compound? CH3- CH2- CH2- CH2- CH3 A) pentane B) hexane C) heptane D) octane E) methylbutane

Q: What is the name of this compound? CH3- CH2- CH2- CH2- CH2- CH2- CH3 A) hexane B) heptane C) octane D) butane E) pentane

Q: What is the name of the continuous chain alkane with six carbon atoms? A) butane B) pentane C) hexane D) heptane E) octane

Q: What is the condensed structural formula for an alkane with four carbon atoms?A) CH3-CH=CH-CH3B) CH3-CH2-CH2-CH3C) C4H10D) C - C - C - CE)

Q: Which of these formulas is the expanded structural formula for an alkane with three carbon atoms?A) C3H6B) C3H8C) CH3-CH2-CH3D) C - C - CE)

Q: A formula that shows the arrangement of all bonds in a molecule is called a(n) A) molecular formula. B) complete structural formula. C) condensed structural formula. D) condensed molecular formula. E) isomeric formula.

Q: In a condensed structural formula, each carbon atom is A) shown with all individual atoms and bonds drawn. B) shown with only the other carbon atoms. C) grouped with its bonded hydrogen atoms. D) not explicitly shown. E) written in lowercase letters.

Q: An organic compound composed of carbon and hydrogen connected only by single bonds is an A) alkane. B) alkene. C) alkyne. D) aromatic compound. E) alcohol.

Q: Carbon atoms always have how many covalent bonds? A) one B) two C) three D) four E) five

Q: How does a molecule of a vitamin synthesized in the laboratory behave when compared to the behavior of the same vitamin isolated from a natural source (e.g., vitamin C synthesized, compared to vitamin C from rose hips)? A) identical in every way B) usually identical C) Some effects are the same. D) Few effects are the same. E) The natural vitamin is better.

Q: Organic chemistry is the study of the chemistry of compounds of A) oxygen. B) hydrogen. C) living things. D) polymers. E) carbon.

Q: A hydrocarbon contains only the elements A) hydrogen and oxygen. B) carbon and oxygen. C) carbon and hydrogen. D) carbon, hydrogen, and oxygen. E) carbon, hydrogen, and nitrogen.

Q: Which one of the following is NOT an organic substance? A) an antibiotic B) nylon C) coal D) silk E) salt, sodium chloride

Q: Which of the following is NOT typical of most organic compounds? A) high melting point B) poor solubility in water C) low boiling point D) covalent bonding E) high flammability

Q: Carbon tetrachloride has a polar C-Cl bond. What is the overall polarity of the carbon tetrachloride molecule? A) weakly polar B) strongly polar C) reversed polarity D) nonpolar E) inverse polarity

Q: As carbon bonds with atoms of increasingly higher electronegativities, the polarity of the bond A) decreases. B) increases. C) stays the same. D) reverses. E) becomes inverted.

Q: The bond angles of tetravalent carbon are all approximately A) 90. B) 109. C) 60. D) 100. E) 45.

Q: A molecule containing a carbon atom bonded to four chlorine atoms has the shape of a A) triangle. B) rhombus. C) square. D) cube. E) tetrahedron.

Q: VSEPR theory predicts that simple carbon compounds will form bonds that are A) as far apart as possible. B) as close together as possible. C) arranged in a straight line. D) pointed to the corners of a cube. E) pointed to the corners of a triangle.

Q: Generally, a solution of an organic compound in water will be electrically A) highly conductive. B) highly ionized. C) nonconductive. D) insulated. E) charged.

Q: In a molecule with a symmetrical arrangement of polar bonds, the overall molecule is A) highly polar. B) somewhat polar. C) nonpolar. D) reverse polar. E) strongly reverse polar.

Q: In the three-dimensional structure of methane, CH4, the hydrogen atoms attached to a carbon atom are aligned A) in a straight line. B) at the corners of a square. C) at the corners of a tetrahedron. D) at the corners of a rectangle. E) at the corners of a cube.

Q: Choose the type of compound from Column 2 that best matches each item in Column 1. A) cycloalkene B) cycloalkane C) alkane D) haloalkane E) alkene 1> CH3- CH = CH - CH3 2> CH4 3> 4> CH3-CH2-Cl 5> 6> CH3 | CH2 | CH3

Q: Match the following organic structures with the appropriate classification. A) aromatic compound B) alkene aromatic C) alkane D) cycloalkane E) cycloalkene 1> 2> CH3-CH2-CH2-CH3 3> 4>

Q: Identify the following as more characteristic of an organic compound or an inorganic compound. A) organic B) inorganic 1> high melting point 2> flammable 3> covalent bonds 4> insoluble in water 5> ionic bonds

Q: The chemical formula for benzene is C6H12.

Q: All polycyclic aromatic compounds cause cancer.

Q: One essential building block of aspirin, ibuprofen, and acetaminophen is the benzene ring.

Q: Nylon, polyester, and most other plastics are carbon compounds.

Q: Polymers are large molecules consisting of repeating units.

Q: Water can be added to alkenes to produce acids.

Q: Hydrogenation of unsaturated vegetable oils raises the melting point and makes them more solid.

Q: Hydration is used to convert alkenes to alkanes.

Q: Hydrogenation is used to convert alkenes to alkanes.

Q: Alkynes can show cis-trans isomerism.

Q: All alkenes show cis-trans isomerism.

Q: In a trans alkene, the groups are on the same side of the double bond.

Q: In a cis alkene, the groups are on the same side of the double bond.

Q: Light-induced cis-trans isomerization is an important step in vision.

Q: An alkyne containing three carbons is named propyne.

Q: Alkynes contain double bonds.

Q: Propylene is used to induce ripening in fruits.

Q: Solid alkanes are found on the surface of many fruits and vegetables.

Q: Mineral oil is a liquid hydrocarbon used as a laxative and lubricant in medical practice.

Q: Organic liquids are often less dense than water.

Q: The products of complete combustion are carbon dioxide and water.

Q: The name of this alkane is 3,4-dimethylhexane.

Q: When naming an alkane, the main chain is the longest continuous carbon chain regardless of bends.

Q: The first four linear alkyl substituent groups are named methyl, ethyl, propyl, and butyl.

Q: In a condensed structural formula, the carbon and attached hydrogens are written as a group.