AnswersChemistryChemical Bonds and Compounds

Practice Test Answers

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1
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The water molecules in the diagram are attracted to each other by

A
dipole-induced dipole interactions.
B
ionic bonds.
C
London dispersion forces.
D
hydrogen bonds.
2
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What can be known about all four polymers, despite their differences?

A
They come from living things.
B
They are at least 100 monomers long.
C
They are made of repeating subunits.
D
They share ionic carbon bonds.
3

What is a characteristic of branched chained alkanes?

A
They have carbon atoms that are double-bonded to other carbon atoms.
B
They have one or more rings of carbon atoms.
C
They have more than two carbons that are bonded to only one other carbon.
D
They have carbons bonded in a single row from one end of the molecule to the other end of the molecule.
4

What is the ratio of sodium ions to bromide ions in neutral sodium bromide?

A
ratio of 3 to 2
B
ratio of 2 to 1
C
ratio of 2 to 3
D
ratio of 1 to 1
5

What does it mean that valence electrons in a metal are delocalized?

A
The valence electrons move from inner orbitals to outer orbitals of each atom.
B
The valence electrons move from outer orbitals to inner orbitals of each atom.
C
The valence electrons move out of the orbitals and go into the air.
D
The valence electrons move between atoms in shared orbitals.
6

What is another name for the molecular orbital theory of bonding in metals?

A
ionic bond theory
B
covalent bond theory
C
electron bond theory
D
band theory
7

What is the ratio of Fe raised to the 3 plus power ions to cap o raised to the 2 minus power ions in a neutral compound?

A
ratio of 2 to 1
B
ratio of 1 to 2
C
ratio of 2 to 3
D
ratio of 3 to 2
8

Which molecule is an aromatic hydrocarbon?

A
Image with description A skeletal model has line segments that slant up, down, up, and up again in a triple bond.
B
Image with description Two hexagon rings with carbons at each corner have alternating double bonds and share one side. H is single bonded to all the C's except the ones on the shared side.
C
Image with description Two carbons are triple bonded to each other; each has a single bond to the outside.
D
Image with description Two central carbons are double bonded to each other; the pair is single bonded to C H 3 above left and right, and to H below left and right.
9

Based on its location in the periodic table, what can most likely be predicted about sulfur?

A
It has six valence electrons available for bonding.
B
It has six nonbonding electrons.
C
It has four valence electrons available for bonding.
D
It has four nonbonding electrons.
10

The IUPAC name for NF sub 3 should have which of these?

A
the prefix “tri” before fluoride
B
the prefix “tri” before nitrogen
C
the Roman numeral (III) after nitrogen
D
the Roman numeral (III) after fluoride
11

Which statement is true about a polyatomic ion?

A
It has a charge that is distributed over only part of the ion.
B
It forms covalent bonds with other ions.
C
It is made of atoms that are covalently bonded together.
D
It forms metallic bonds with other ions.
12

Which of the following most likely requires intermolecular forces?

A
a spider walking on the bottom of a leaf
B
a koala using claws to hold onto a tree
C
a piece of fruit falling from a branch to the ground
D
a rock maintaining its solid shape
13

Eugene works at a carpet factory. Which natural polymer does he most likely work with to make the carpets?

A
rubber
B
silk
C
nylon
D
wool
14

How many valence electrons are available for bonding in bromine Br ?

A
one
B
two
C
five
D
seven
15

Which is the IUPAC name of cap o sub 3 ?

A
oxygen
B
dioxide
C
trioxygen
D
monoxide
16

Which best describes why NH sub 4 raised to the plus power can form an ionic bond with Cl raised to the negative power ?

A
Its outermost shell gains one or more electrons from Cl raised to the negative power .
B
It has a negative charge that is spread over the entire ion.
C
It has a nitrogen atom that is strongly attracted to Cl raised to the negative power .
D
Its positive charge is attracted to the negative charge of Cl raised to the negative power .
17

Which of these is a trans - isomer of the above hydrocarbon?

A
Image with description A skeletal model with line segments that slant up, run flat in a double bond, slant down, run flat, and slant down again.
B
Image with description A skeletal model of a 5 carbon chain with a double bond between the first and second carbons.
C
Image with description A skeletal model with line segments that slant up, fun flat in a double bond, slant up, and run flat.
D
Image with description A skeletal model with a 6 carbon chain, with a double bond between the second and third carbon.
18

What is the name of this alkane?

A
1-ethyl,3-methylcyclohexane
B
1-methyl,5-ethylisohexane
C
1-methyl,3-ethylnonane
D
1-ethyl,5-methylcyclohexane

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