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WorksheetsUnit 4 Practice Exam Part 2
Total questions: 19
Worksheet time: 10mins
Which type of bond results when one or more
valence electrons are transferred from one atom to
another?
a polar covalent bond
a nonpolar covalent bond
an ionic bond
a hydrogen bond
What occurs when an atom loses an electron?
The atom's radius decreases and the atom
becomes a negative ion.
The atom's radius increases and the atom
becomes a positive ion.
The atom's radius increases and the atom
becomes a negative ion.
The atom's radius decreases and the atom
becomes a positive ion.
A neutral atom with the electron configuration
2-6 would most likely form a bond with an atom
having the configuration
2-8-8
2-8
2
2-2
Which is the formula for sodium perchlorate?
NaClO
NaClO4
NaClO3
NaClO2
Which electron-dot diagram best represents a
compound that contains both ionic and covalent
bonds?
Given the reaction:
The metal represented by M is most likely a metal
from Group
1
2
11
13
Which compound contains only covalent bonds?
Ca(OH)2
NaOH
CH3OH
Ba(OH)2
Which element has atoms that can form single,
double, and triple covalent bonds with other atoms
of the same element?
oxygen
hyrdrogen
fluorine
carbon
Which element forms a diatomic molecule
containing a triple covalent bond?
O3
N2
Cl2
H2
A substance was found to be a soft, nonconducting
solid at room temperature. The
substance is most likely
a metallic solid
a molecular solid
a network solid
an ionic solid
The degree of polarity of a chemical bond in a
molecule of a compound can be predicted by
determining the difference in the
densities of the elements in the compound
electronegativities of the bonded atoms in a
molecule of the compound
melting points of the elements in the compound
atomic masses of the bonded atoms in a
molecule of the compound
Which molecule contains a nonpolar covalent
bond?
Br-Br
C=O
O=C=O
Which of the following compounds has the
highest boiling point?
H2Se
H2O
H2Te
H2S
Which electron-dot diagram represents a
molecule that has a polar covalent bond?
At STP, fluorine is a gas and iodine is a solid.
This observation can be explained by the fact that
fluorine has
weaker intermolecular forces of attraction
than iodine
lower average kinetic energy than iodine
stronger intermolecular forces of attraction
than iodine
higher average kinetic energy than iodine
Which formula represents a tetrahedral
molecule?
CH4
CaCl2
Br2
HBr
Which type of bond is found in sodium bromide?
metallic
ionic
covalent
hydrogen
The table below contains data for compounds A, B, C, and D.
Which list identifies the type of bonding characteristic of each compound's solid phase?
A -network B -ionic C -molecular D-metallic
A -ionic B -network C -molecular D-metallic
A -metallic B -molecular C-network D-ionic
A -ionic B -network C -metallic D-molecular
Which structural formula represents a nonpolar
symmetrical molecule?
