H e s i
-
C h e m i s t r y
P r a c t i c e
Q u e s t i o n s
B
-
ANS
An
atom
of
bismuth
has
a
mass
number
of
209
and
an
atomic
number
of
83.
How
many
neutrons
are
in
one
bismuth
atom?
A)
0.397
B)
126
C)
292
D)
2.52
A
-
ANS
How
many
monosaccharides
are
joined
to
form
a
disaccharide?
A)
T wo
B)
Three
C)
More
than
six
D)
Six
C
-
ANS
Identify
the
reduction
in
the
following
redox
reaction:
Fe2O3
+
3CO
->
2FeO
+
3CO2 A)
3CO
->
2FeO
B)
Fe2O3
->
3CO2
C)
Fe2O3
->
2FeO
D)
3CO
->
3CO2
C
-
ANS
How
many
states
of
matter
are
there?
A)
Six
B)
T wo
C)
Three
D)
Five
B
-
ANS
Which
of
the
following
represents
the
correct
electron
configuration
for
beryllium
(Be
-
4)?
A)
1s1
1s1
2p1
B)
1s^2
2s^2
C)
2s1
2s^2
D)
2s^2
1s1
D
-
ANS
Which
of
the
following
best
describes
the
product
of
a
chemical
equation. A)
It
is
a
recipe
B)
It
is
the
equation
C)
It
is
an
ingredient
D)
It
is
the
desired
end
result.
C
-
ANS
The
diameter
of
a
carbon
atom
is
0.000,000,000,154m.
How
is
this
number
expressed
in
scientific
notation?
A)
1.54
x
10(10)
B)
1.54
x
10(12)
C)
1.54
x
10(-10)
D)
1.54
x
10(-12)
C
-
ANS
Which
type
of
chemical
bond
has
a
covalent
bond
in
which
electrons
are
equally
attracted
to
both
nuclei?
A)
Single
covalent
bond
B)
Polar
covalent
bond
C)
Nonpolar
covalent
bond
D)
Double
covalent
bond B
-
ANS
Which
of
the
following
is
the
metric
system's
basic
measure
of
distance?
A)
Inch
B)
Meter
C)
Y ard
D)
Foot
C
-
ANS
Which
of
the
following
is
considered
neutral
on
the
pH
scale?
A)
0
B)
10
C)
7
D)
14
C
-
ANS
H2O2
is
the
molecular
formula
for
which
of
the
following?
A)
W ater
oxide
B)
W ater
C)
Hydrogen
peroxide
D)
Hydrogen
oxide
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