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Organic Compounds — Quiz Answers

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1
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Which is the best explains why a structural formula of a chemical compound is more useful than a molecular formula?

A
Both formulas show the ratio of protons to neutrons within a particular compound. However, a structural formula also shows the location of each valence electron in a compound.
B
Both formulas identify the specific atoms in a particular compound. However, a structural formula also shows how the atoms in a compound are bonded together.
C
Both formulas identify the types of atoms in a particular compound. However, a structural formula also shows how many atoms of each type are in a compound.
D
Both formulas show the location of each valence electron in a particular compound. However, a structural formula also shows the ratio of protons to neutrons within a compound.
2
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What is a disadvantage of using a structural model to show a chemical compound?

A
Structural models provide minimal three-dimensional information.
B
Structural models cannot distinguish between different isomers of a compound.
C
Structural models do not identify the number and type of each atom.
D
Structural models cannot distinguish between single, double, and triple bonds.
3

Which is the best describes a possible carbon compound?

A
One carbon atom forms a double bond with an oxygen atom and two single bonds with two hydrogen atoms.
B
One carbon atom forms five single bonds with five hydrogen atoms.
C
One carbon atom forms a quadruple bond with another carbon atom.
D
One carbon atom forms a triple bond with another carbon atom and a double bond with an oxygen atom.
4

Which an organic compound?

A
Image with description N is triple-bonded to N.
B
Image with description S is double bonded above and left to O, and single bonded right and below to O H.
C
Image with description Two C atoms are double-bonded together, and single bonded above left, above right, below left, and below right to H.
D
Image with description O is bonded below left and right to H.
5

Structural isomers are chemical compounds that have

A
the same atoms that are arranged in different orders.
B
different types of bonds that are bonding the same number of carbon atoms to different atoms.
C
the same atoms that are arranged in the same order.
D
the same types of bonds that are bonding the same number of carbon atoms to different atoms.
6

How many isomers does hexane open paren cap c sub 6 cap h sub 14 close paren have?

A
four
B
five
C
six
D
seven
7

How many covalent bonds can a typical carbon atom form?

A
one
B
two
C
three
D
four
8

A carbon atom can bond with other atoms in a variety of ways. Which set of bonds would a typical carbon atom form in a compound?

A
a double bond and a triple bond
B
two double bonds and two single bonds
C
three double bonds and a single bond
D
a triple bond and a single bond
9

Which best explains the difference between a ball-and-stick model of a chemical compound and a space-filling model?

A
Space-filling models show the bonds between atoms, but not the relative sizes of atoms. Ball-and-stick models show the relative sizes of atoms, but not the bonds between atoms.
B
Space-filing models can show compounds in three dimensions, but ball-and-stick models cannot.
C
Ball-and-stick models show the bonds between atoms, but not the relative sizes of atoms. Space-filling models show the relative sizes of atoms, but not the bonds between atoms.
D
Ball-and-stick models can show compounds in three dimensions, but space-filling models cannot.
10

Which is an organic compound?

A
calcium sulfide CaS
B
ammonia open paren NH sub 3 close paren
C
sulfur trioxide open paren SO sub 3 close paren
D
octane open paren cap c sub 8 cap h sub 18 close paren

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Organic Compounds — Quiz Answers — Biology