Exam (elaborations)
HESI A2 CHEMISTRY Practice Questions 2024
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HESI A2 CHEMISTRY Practice Questions 2024
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HESIA2
CHEMISTRY
Practice
Questions
Using
the
Lewis-dot
structure
model,
how
many
dots
would
Carbon
have?
-
ANS
4
What
would
produce
Hydrogen
ions
in
an
aqueous
solution
and
would
turn
a
litmus
test
from
blue
to
red?
-
ANS
Vinegar
Dihydrogen
monoxide
is
better
known
as
?
-
ANS
Water
What
is
the
most
abundant
element
on
earth?
-
ANS
Oxygen
What
is
the
most
abundant
element
in
the
universe?
-
ANS
Hydrogen
What
liquid
element
is
liquid
at
room
temperature
at
room
temperature?
-
ANS
Mercury
A
solution
that
contains
the
maximum
amount
of
dissolved
solute
is
said
to
be
what?
-
ANS
Saturated
The
change
in
state
from
a
gas
to
liquid
is
called
what?
-
ANS
Condensation
What
is
not
a
property
of
water?
-
ANS
Density
of
liquid
form
is
less
than
solid
form
Viscosity
increases
in
what
circumstance?
-
ANS
Temperature
decrease
What
is
true
of
gas
particles?
-
ANS
They
exert
no
force
on
one
another
Reactions
that
absorb
heat
are
called
what?
-
ANS
Endothermic
What
is
the
molar
mass
of
Calcium
if
the
atomic
mass
is
40
amu?
-
ANS
40g
What
is
the
name
of
NO2?
-
ANS
Nitrogen
dioxide
BF3
is
also
known
as
what?
-
ANS
Boron
trifluoride
In
the
formula
C12H22O11
the
12
behind
the
carbon
represents
the
12
what
of
carbon?
-
ANS
Atoms
In
an
ionic
bond,
a
positively
charged
ion
is
attracted
to
what
type
of
ion?
-
ANS
Anion
High
density
matter,
which
is
little
affected
by
pressure,
and
holds
its
shape,
is
classified
as?
-
ANS
Solid DNA
&
RNA
contain
many
of
the
same
nitrogen-containing
bases.
Which
base
is
only
found
in
RNA?
-
ANS
Uracil
What
is
not
a
component
of
lipids
Carbon,
Oxygen,
Nitrogen
or
Hydrogen?
-
ANS
Nitrogen
Simple
carbohydrates
composed
of
a
single
ring
are
also
called
what?
-
ANS
Monosaccharides
Which
of
the
following
is
a
water-soluble
Vitamin
D,
Vitamin
E,
Vitamin
C
or
Vitamin
K?
-
ANS
Vitamin
C
A
catalyst
increases
what
in
a
chemical
reaction?
-
ANS
Speed
The
vertical
columns
of
the
periodic
table
are
called
what?
-
ANS
Groups
Bleaches,
disinfectants,
&
salts
often
contain
elements
from
which
nonmetal
group?
-
ANS
Halogens
Which
is
not
a
property
of
metals?
-
ANS
Low
Density
The
breakdown
of
what
provides
the
energy
needed
for
chemical
reactions
in
the
body?
-
ANS
ATP
A
particle
with
a
negative
or
positive
charge
is
referred
to
as
what?
-
ANS
Ion
The
bond
between
water
molecules
is
called
what?
-
ANS
Covalent
bond
Which
pH
would
be
the
most
basic,
pH
4,
pH
5,
pH
7
or
pH
9?
-
ANS
pH
Positively
charged
particles
in
an
atom
are
called
what?
-
ANS
Protons
What
are
all
metric
measurements
composed
of?
-
ANS
Metric
prefix
and
a
basic
unit
of
measure
What
is
the
most
commonly
used
temperature
scale
in
the
scientific
community?
-
ANS
Celsius
or
Centigrade
The
nucleus
of
an
atom
contains
or
is
made
up
of
which
of
the
following?
-
ANS
Protons
and
neutrons
What
is
an
atom
that
has
a
positive
charge
called?
-
ANS
A
cation
In
the
periodic
table,
what
are
the
rows
called?
-
ANS
Periods What
is
the
atomic
number?
-
ANS
Number
of
protons
Which
of
the
following
describes
the
atomic
mass?
-
ANS
Average
mass
of
that
element's
isotopes
Chemical
equations
are
written
in
which
manner?
-
ANS
Reactants
->
Products
What
is
the
charge
on
potassium
in
the
compound
KCl?
-
ANS
+1
A
catalyst
is
a
substance
that
accelerates
a
reaction
by
which
of
the
following?
-
ANS
Finding
an
alternate
pathway
for
a
reaction
that
requires
less
energy
Percent
concentration
of
a
solution
is
expressed
as
which
of
the
following?
-
ANS
Parts
per
100
parts
What
will
one
liter
of
a
molar
solution
of
any
element
contain?
-
ANS
The
atomic
mass
in
grams
of
that
element
Chemical
bonding
is
the
bonding
of
which
of
the
following?
-
ANS
One
atom
to
another
atom
Which
of
the
following
describes
an
ionic
bond?
-
ANS
It
does
not
share
electrons
What
is
the
concentrationof
58.5
g
of
NaCl
in
2
L
of
solution
(atomic
weights
of
each
elements
are
as
follows:
Na=23g/mol,
Cl=35.5g/mol)?
-
ANS
0.5
mol
NaCl
In
a
redox
reaction,
which
of
the
following
describes
reduction?
-
ANS
It
is
the
gain
of
electrons
What
are
acids?
-
ANS
Hydrogen
donors
What
is
a
benefit
of
water's
ability
to
make
hydrogen
bonds?
-
ANS
High
specific
heat
What
are
bases
or
alkaline
solutions?
-
ANS
Hydrogen
acceptors
Chemical
reactions
in
living
systems
proceed
along
catabolic
pathways,
and
there
tends
to
be
an
increase
in
which
of
the
following?
-
ANS
Entropy
What
is
a
pH
of
7?
-
ANS
Neutral
Which
is
the
correct
way
to
write
Iodine
(I)
with
an
atomic
mass
of
131?
-
ANS
I^131,
I131,
131^I
What
is
the
correct
formula
for
magnesium
chloride?
-
ANS
MgCl2
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