Post Test I
Use the picture to answer questions 1 and 2 below.
19
K
Potassium
39.0983
2, 8, 8, 1
1.
How many electrons does potassium have in its outer shell?
3
Al
B
8
16
C
p2
1Co
2. How many electrons total does an atom of potassium have?
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I 23
3
Post Test I
3. Which ofthe following graphs most clearly represents the following information
set?
Atomic Radius
(picometers)
145
105
85
70
Element
Lithium
Beryllium
Boron
Carbon
C
A
160
:
Lithium
N
i:
Atomc Radius
. Berylilum
(picometers)
60
DBoron
—
40
Carbon
—-—-
-
--—..
—..—.——
20
0
0
B
1
2
3
4
5
B
160
F.
Co
L()
140
120
100
100
AtornRadius]
•Atomic Radius
.
80
(picometers)
.
60
c’1
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0
20
-J
Lithium
Beryllium
Boron
0
Carbcn
1
2
3
4
5
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124
4.
Look at the following equation.
4
MgO+H2O-
7. What increases the rate of osmosis
between two solutions of different
concentrations?
What compound correctly completes this
chemical reaction?
A
B
C
B
MgOH
Mg(OH)2
2MgOH
2Mg(OH)3
5. Which of the following best
describes the electron cloud of an
atom?
A
B
C
B
6.
Co
In
Co
A
B
C
p
8.
9.
In a covalent bond
5
electrons are shared.
electrons are transferred.
protons are transferred.
proteins and neutrons are
shared.
$anjay wants to make sweat tea.
He puts a few spoonfuls of sugar in
a glass of iced tea and stirs it. What is
the solute?
tea
sugar
sweet tea
ice
A
B
C
p
5
neutral
positive
negative
there is no change in the charge
ofthe atom
lowering its temperature
raising its temperature
add more solvent to both
add more solute to both
A
B
C
p
A
B
C
p
2
the exact place an electron is
found
the approximate space an
electron is likely to be found
the specific location that an
electron is found
the exact place that an electron
is thought to exist
What is the resulting charge of an
atom that gains electrons during
chemical bonding?
.
10. A schematic diagram ofthe
Periodic Table is shown below. Of
the four shaded groups of elements,
which one represents the noble gases?
PERIODIC TAB1E OF THE ELEMENTS
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I 25
6
light gray, section A
dark gray, section B
black, section C
striped, section D
Post Test I
11. Which ofthe following examples
represents potential energy, but not
kinetic energy?
A
B
C
B
15. Which of the following correctly
describes electrons of an atom?
A
an avalanche
a coiled spring
a hot air balloon in flight
the pistons in a working
hydraulic system
B
C
12. Microwaves have a longer
12
wavelength than infrared waves.
Which of the following must also be
true?
A
B
C
B
Microwaves have a higher
frequency than infrared waves.
Microwaves are visible and
infrared waves are invisible.
Infrared waves have a lower
energy than microwaves.
Infrared waves have a higher
frequency than microwaves.
13. Carina uses 2 N of force to push a
box across her room that is 4 meters
wide. How much work did she do?
(W = f x d)
A
B
C
B
B
slow-moving negatively
charged particles located in the
nucleus
fast-moving negatively charged
particles located outside the
nucleus
slow-moving positively charged
particles located outside the
nucleus
fast-moving positively charged
particles located either in the
nucleus or outside of it at any
given moment
16. Identify the correct coefficient to
balance the following chemical
equation.
N2
A
B
C
B
_‘2
2NH3
2
3
6
no coefficient
17. Which ofthe following is true of
an ionic bond?
0.5 J
2J
8J
She did not do any work.
A
B
C
14. Sunlight heats a black tank full of
water. Describe the energy
conversions that are taking place.
2
B
5
valence electrons are shared
between two or more atoms
results in compounds with low
melting and low boiling points
commonly formed between
nonmetals
results in charged ions
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A
B
C
B
electromagnetic to thermal
thermal to sound
chemical to thermal
mechanical to electromagnetic
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18. Which diagram below shows the
position ofthe forces that will give the
greatest acceleration to the trunk?
A
B
C
B
C
A
:
A
B
C
.-
D
,
19. What type of mechanical wave is
most destructive to buildings
located in San Francisco?
A
B
C
D
8
low mass and high acceleration
low mass and low acceleration
high mass and high acceleration
high mass and low acceleration
21. How does a catalyst affect the rate
of a chemical reaction?
•
D
B
20. According to Newton’s second law
of motion, which of the following
would result in the greatest force?
12
it speeds it up
it slows it down
it keeps it happening at the same
rate
catalysts do not affect chemical
reactions
Use the SI unit concept map to answer
question 22.
light waves
seismic waves
electromagnetic waves
sound waves
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22. Which sequence shows the
appropriate SI base units in the
correct order?
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I 27
gram, milliliter, millisecond,
Celsius
gram, milliliter, second, Celsius
gram, liter, second, Kelvin
gram, milliliter, second, Kelvin
Post Test I
23. Which ofthe following is an
example of an electromagnetic
wave?
A
B
C
D
Use the data table to answer question 26.
Bubble-blower: Kim
Trial #
Time(s)
1
1
2
4
3
2
4
4
5
4
gamma rays
electrons
nuclei
sound waves
24. A wagon is used to transport
children to a fair. What type of
simple machine is being used?
A
B
C
D
12
9
26. Debra challenged Kim to a bubble- i
blowing contest. The point was to
see how long a bubble could continue
to expand before popping. Kim’s data
is shown in the table. Which SI unit
did they use to measure time?
lever
inclined plane
wheel and axel
pulley
25. Which of the following pH values
describes a strong acid?
6
A
B
C
Al
B
4
C
7
B
13
B
centimeter
millisecond
minute
second
27. The loss or gain of which
subatomic particle has the greatest
effect on chemical reactivity?
A
B
C
D
electron
proton
neutron
nucleon
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2$. Which of the following cannot be
found on the Periodic Table?
A
B
C
p
B
C
D
—
aluminum chloride
nitrogen
titanium
magnesium
29. Which statement correctly
describes the difference between an
atom and a molecule?
A
Use the following information to answer
questions 30 31.
Liquid hydrogen peroxide undergoes a
chemical reaction, decomposjng into
hydrogen gas and oxygen gas. The reaction is
as follows:
‘2O2(1)
5
An atom consists ofone or more
molecules chemically joined
together.
An atom is the result of the
physical separation of
molecules.
A molecule consists of two or
more atoms chemically joined
together.
A molecule is one or more
atoms physically joined
together.
A
B
C
B
C
B
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129
H202 molecules
H202 atoms
‘2 and °2 molecules
They all have equal amounts of
motion.
31. If the decomposition reaction
4
above began with 50 grams of
hydrogen peroxide, what is the mass
ofthe product ofthe reaction?
B
Co
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C?
H2(g) + 02(g)
30. Which of the following has the
greatest amount of molecular
motion?
A
co
-
20 grams ofH2 and 02.
50 grams ofH2 and 02.
50 grams ofO2 only.
Zero grams, because gas has no
mass.
Post Test I
Answer question 32 based on the summary
of the experiment.
A group of students wanted to find out how
heat affects the rate of chemical reactions of
liquids.
32. What were some ofthe tools most
likely used during this experiment?
35. In an electric car, a car battery
allows an engine to crank. The
engine then moves the car from one
location to another. Trace the energy
transformations shown in the diagram
below.
i
A
Engine
Battery
B
.
Tire
A
B
C
D
/1
C
\--7
\\J,/
36. Four boys were working out with free
weights in gym class.
D
.
Brett was holding a 1 50 pound barbell
above his head.
.
Philip was spotting for Brett.
.
Bryan was pushing a box full of
weights across the floor.
.
33. Who was the first person to suggest
the idea of atoms?
A
B
C
B
2
B
Doug was holding a squat with a
30-pound barbell in each hand.
The physical science teacher came by
and said only one boy was actually
doing any work. Who was it?
Darwin
Dalton
Democritus
Aristotle
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34. What characteristic do all waves
share?
A
B
C
chemical, mechanical, electrical
electrical, chemical, mechanical
chemical, electrical, electrical
chemical, electrical,
mechanical
12
All waves move matter.
All waves transfer energy.
All waves can move through a
vacuum.
All waves travel at the same
speed.
A
B
C
B
Brett
Philip
Bryan
Doug
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37. Ross was riding his bike down a
8
hill and he ran straight into a
mailbox. Identify the statement that
most closely describes Ross’s motion
immediately following his collision
with the mailbox.
A
B
C
B
He is thrown forward over the
handlebars.
He is thrown backwards off the
bike.
He is thrown sideways off the
bike.
He is thrown upward into the
air.
38. Rita uses a pulley to lift a piano up
a flight of stairs. How does a
pulley help Rita lift?
A
B
C
B
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A
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it increases the amount of work
done
it increases the amount of force
needed
it decreases the amount of force
needed
it keeps the amount of work and
force the same
The motion of the balls would
increase as water temperature
increased.
The motion ofthe balls would
decrease as water temperature
increased.
The balls would dissolve, so we
couldn’t see them move.
The motion ofthe balls depends
on the size of the sample, not
temperature.
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131
decrease in temperature
the absence of a catalyst
increase in the surface area of
reactants
decrease in the surface area of
reactants
41. Tony wants to increase the output
force on his hydraulic press. How
can Tony accomplish his goal?
B
39. Stacy adds 50 tiny styrofoam balls
to her 100 mL water sample. She
places the sample on the hot plate and
heats it until boiling. Describe the
motion ofthe styrofoam balls during
this experiment.
A
40. Which of the following would
increase the rate of a chemical
reaction?
D
decrease the size of the output
cylinder
increase the size of the output
cylinder
increase the size of the input
cylinder
drain some fluid from the
machine
9
Post Test I
Use this information to answer questions
42—43.
45. Which object in the graph has a
constant speed?
Karen wants to win a blue ribbon at the
fair this year for the largest tomato plants. She
would like to compare two new plant foods
on her tomato plants to see ifthey really make
the plants grow larger.
Karen needs to design an experiment to
see which plant food induces more growth.
She has three ofthe same type of tomato
plants, and they all receive the same amount
of sunlight, water and temperature. Karen
adds plant food A to plant A, she adds plant
food B to plant B and she lets plant C grow
without any plant food. She measures the
height of the plants every week.
42. Plant A and Plant B are part of
which group?
A
B
C
D
—+-.Qbject 1
—.--Object2
:
S
0
1
3
4
5
Time (s)
A
B
C
B
object 1
object 2
both object 1 and 2
neither obj ect 1 nor object 2
46. Which ofthe following statements
about kinetic and potential is true?
A
B
control
variable
data
experimental
2
C
B
All potential energy becomes
kinetic energy.
Potential energy is expressed as
motion.
All kinetic energy becomes
potential energy.
Potential energy is stored.
43. The plant food is the
A
B
C
B
dependent variable.
independent variable.
qualitative data.
control group.
t.
r.
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44. Which two molecules contain an
equal number of atoms?
LU
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C2H6
KMIIO4
‘25O4
C2H3OH
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A
B
C
p
z
‘25O4 and C2H3OH
C2H6 and KMnO4
KMnO4 and H2504
C2H6 and C2H3OH
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47. Which one of the following is a
testable hypothesis?
A
B
C
B
Moths are more attracted to
white light than blue light.
Dogs make better pets than cats.
Talking to plants makes them
feel accepted.
Swansaremoregracefulthan
50. Which of the following has both
wavelength (2) and amplitude (A)
labeled correctly?
A
.
.
A
—
----
48. Which ofthe following is the best
example of potential energy?
A
B
C
B
B
afire
a match
aballoon
thunder
f”f\
It
49. Which simple machine is depicted
by the modified seesaw in the
following diagram?
C
Little
force
V’\j/N\
A
B
C
alever
apulley
awedge
an inclined plane
B
%%\r\I
B
I 33
12
Post Test I
51. When energy is transformed from
one form to another, some of the
energy is lost in the form of
A
B
C
B
53. All ofthe elements in the halogen
family
A
water.
hydrogen gas.
mechanical energy.
heat energy.
B
C
U
Use the graph below to answer
question 52.
need to give up one electron to
become stable.
need to gain one electron to
become stable.
do not react at all with other
elements.
do not need to gain one electron
to become stable.
54. Atoms of elements in period 4 are
larger than atoms of elements in
period 1. What piece of evidence best
supports this statement?
Workvs Distance
A
B
C
B
“1
ci)
0
atomic number
atomic symbol
chemical nomenclature
elemental group
C
Distance (Meters)
52. Whatdoestheslopeofthisgraph
represent?
9
Co
U,
A
B
C
B
speed
acceleration
force
energy
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55. When a roller coaster car reaches
the top of a big hill, which of the
following will be the greatest?
A
B
C
D
B
C
D
W=F x
B
MA
6
Water flows from the tea bag to
the cup, because there is a
higher water concentration in
the cup.
Water flows from the cup into
the tea bag, because there is a
higher concentration of tea
leaves in the cup.
Water flows from the cup into
the tea bag, because there is a
lower water concentration in the
cup.
Water flows from the cup into
the tea bag, because there is a
lower water concentration in the
tea bag.
57. Identify the coefficients needed to
balance the following chemical
equation.
CO
Co
0?
C02+H2 -) CH4+1120
Lii
0
-J
0.
A
B
C
D
—
—
3C02,6H20
2H2 2H20
4H2,2H20
2C02,2CH4
,
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I 35
a
Output Force
Input Force
C
Force
=
mass x acceleration
B
Motion = forward force
—
resistance
59. Which of the following words
describes the noble gases of the
Periodic Table?
A
B
C
B
malleable
inactive
ductile
volatile
60. Orbitals define the arrangement of 2
electrons for an atom.
The p sublevel can hold 3 orbitals.
How many electrons can be found in
the p sublevel?
A
B
C
B
Co
Co
5$. Which math equation below is
Newton’s second law of motion?
A
kinetic energy
potential energy
sound energy
mechanical energy
56. What happens when a tea bag is
placed in a cup of hot water?
A
io
2
3
6
9
Post Test I
61. Which SI unit is used to measure
mass?
A
B
C
B
65. A hand truck is a complex machine
that uses two different simple
machines to move heavy objects.
What two simple machines are
demonstrated by the hand truck?
liter
second
gram
meter
7
62. Where are the nonmetals located on
the Periodic Table?
A
B
C
D
on the left
on the right
in the middle
at the bottom
63. Which molecule below is an
example of an ionic bond?
A
B
C
D
I.
5
CH4
H20
CO2
NaCl
A
B
C
B
64. What state ofmafter has the slowest
particle motion resulting in the
lowest amount of kinetic energy?
A
B
C
D
wedge and pulley
wheel and axel and pulley
incline plane and lever
lever and wheel and axel
66. What term is used to describe
location A in the wave diagram
below?
solid
liquid
gas
plasma
12
Co
10
10
C%4
CO
Co
A
B
C
B
crest
trough
amplitude
wavelength
w.
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I 36