Hydrocarbon Compounds 5/17/11
HYDROCARBON COMPOUNDS 5/17/11
- 1.What is organic chemistry?
- A.
It is the study of the chemistry of oxygen compounds
- B.
It is the study of the chemistry of carbon compounds.
- C.
It is the study of the chemistry of hydrogen compounds.
- 2.Organic compounds that contain only carbon and hydrogen are called
- A.
Hydroxcide
- B.
Carbonoxcide
- C.
Hydrocarbons
- 3.Alkanes contain only _____________ covalent bonds.
- A.
Single
- B.
Two
- C.
Three
- 4.What is the simplest alkane?
- A.
Hydrogen
- B.
Carbon
- C.
Methane
- 5.Which 2 statements are true about carbon’s ability to form bonds.?
- A.
Carbon atoms have four valence electrons. Carbon atoms can form stable bonds with each other.
- B.
Carbon atoms always form three covalent bonds. Carbon atoms can form stable bonds with each other.
- C.
Carbon atoms always form three covalent bonds. Carbon atoms can form stable bonds with each other.
- 6.What are straight-chain alkanes?
- A.
They contain any number of carbon atoms in a chain bonded together by single covalent bonds. The remaining valence electrons are bonded to carbon atoms.
- B.
They contain any number of carbon atoms in a chain bonded together by single covalent bonds. The remaining valence electrons are bonded to oxygen atoms.
- C.
They contain any number of carbon atoms in a chain bonded together by single covalent bonds. The remaining valence electrons are bonded to hydrogen atoms.
- 7.The names of all alkanes end with the suffix ______________________ .
- A.
-kan
- B.
Alk
- C.
-ane
- 8.Nonane has
- A.
Has 9 carbon atoms
- B.
Has 7 carbon atoms
- C.
Has 4 carbon atoms
- 9.propane
- A.
Has 8 carbon atoms
- B.
Has 4 carbon atoms
- C.
Has 3 carbon atoms
- 10.heptane
- A.
Has10 carbon atoms
- B.
Has 5 carbon atoms
- C.
Has 7 carbon atoms
- 11.butane
- A.
Has 1 carbon atoms
- B.
Has 4 carbon atoms
- C.
Has 2 carbon atoms
- 12.The straight-chain alkanes are a(n) ______________________________ because there is an incremental change of —CH2— from one compound in the series to the next.
- A.
Homologous series
- B.
Heterogous series
- C.
Mologous series
- 13.CH3CH2CH2CH2CH3 CH3(CH2)3CH3 C — C — C — C — C
- A.
Formula for carbon
- B.
Formula for methane
- C.
Formula for pentane
- 14.The ______________________ system names organic compounds according to their structure.
- A.
UPIAC
- B.
PACIU
- C.
IUPAC
- 15.A(n) ______________________ is an atom or group of atoms that replaces hydrogen in a hydrocarbon.
- A.
Substituent
- B.
Emerged
- C.
Not substituent
- 16.Alkyl groups are named by removing the-ane ending of the parent hydrocarbon and adding ______________________ to indicate that one ______________________ has been removed.
- A.
Ly, radon
- B.
Ing, oxygen
- C.
-yl ,hydrogen
- 17.What is a branched-chain alkane?
- A.
It is an alkane with one or more alkyl groups.
- B.
It is an alkane with two or more alkyl groups
- C.
It is an alkane with three or more alkyl groups
- 18.Why are hydrocarbon molecules such as alkanes nonpolar?
- A.
Hydrocarbon molecules such as alkanes are nonpolar because the electron pair in a carbon–hydrogen or a carbon–carbon bond is shared equally by the nuclei of the atoms involved.
- B.
Water molecules such as alkanes are nonpolar because the electron pair in a carbon–hydrogen or a carbon–carbon bond is shared equally by the nuclei of the atoms involved.
- C.
Carbon molecules such as alkanes are nonpolar because the electron pair in a carbon–hydrogen or a carbon–carbon bond is shared equally by the nuclei of the atoms involved.
- 19.Hydrocarbons and other nonpolar molecules are not attracted to
- A.
Radon
- B.
Water
- C.
Oxygen
- 20.What is an alkene?
- A.
It is a hydrowater containing one or more carbon–carbon double covalent bonds.
- B.
It is a carbon containing one or more carbon–carbon double covalent bonds.
- C.
It is a hydrocarbon containing one or more carbon–carbon double covalent bonds.
- 21.Organic compounds that contain fewer than the maximum number of hydrogens in their structures are called ______________________ compounds.
- A.
Unsaturated
- B.
Saturated
- C.
Multisaturated
- 22.Which family of hydrocarbons are always saturated compounds?
- A.
Hydrocarbon
- B.
Alkanes
- C.
Ethyne
- 23.Hydrocarbons that contain one or more ______________________ covalent bonds between carbons are called alkynes.
- A.
Four
- B.
Double
- C.
Triple
- 24.______________________ is the simplest alkyne, and is also known by the common name ______________________ . common name ______________________ .
- A.
Ethyne, acetylene
- B.
Hydrocarbons,acetylene
- C.
Ethyne,Hydrocarbons
- 25.What are the major attractive forces between alkane, alkene, or alkyne molecules? What physical properties can be explained by these forces?
- A.
The major forces are semi - weak van der Waals forces. As a result, many of these compounds have very low boiling points, and are gases at room temperature.
- B.
The major forces are strong van der Waals forces. As a result, many of these compounds have very low boiling points, and are gases at room temperature.
- C.
The major forces are weak van der Waals forces. As a result, many of these compounds have very low boiling points, and are gases at room temperature.
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