Homework Due May 4, 2017
Name:
1.
Date:
The graph below shows the e ect of temperature
on the volume of a gas.
2.
A scientist observed changes in the gas pressure
of one mole of a gas in a sealed chamber with
a xed volume. To identify the source of the
changes, the scientist should check for variations
in the
A.
air pressure outside the chamber.
B.
molecular formula of the gas.
C.
temperature of the chamber.
D. isotopes of the gas.
Which generalization can be made about the
relationship between the temperature and volume
of a gas?
A.
As the temperature of a gas decreases, its
volume increases.
B.
As the temperature of a gas decreases, its
volume stays the same.
C.
As the temperature of a gas increases, its
volume increases.
3.
D. As the temperature of a gas increases, its
volume stays the same.
Theoretically, when an ideal gas in a closed
container cools, the pressure will drop steadily
until the pressure inside is essentially that of a
vacuum. At what temperature should this occur?
A.
C.
page 1
0 C
273 K
B.
460 C
D. 0 K
4.
The picture below shows a gas at standard
conditions in a container with a moveable piston.
5.
According to Charles's law, what will happen to
the piston when the gas is heated?
A.
The piston will move up because the gas
particles get larger.
B.
There will be no change because heat will not
a ect the system.
C.
The piston will move up because the gas
particles move faster and get farther apart.
The diagram below shows the top view of a
student swinging a ball above her head.
This ball continues to move in a circular path
because
A.
gravity pulls the ball downward.
B.
some air resistance is present.
C.
the string applies a force against the ball.
D. the weight of the string is the same weight as
the ball.
D. The piston will move down because the gas
particles move slower and get closer together.
page 2
Homework Due May 4, 2017
6.
The illustration shows a runner rounding a turn on
a running path.
7.
Pendulum Experiment Data
The runner leans inward while traveling around a
curve. This action allows the runner to
A.
use force to help change direction.
B.
introduce a force to overcome gravity.
C.
A student conducted many trials to determine
the e ect that variables had on the cycle of a
pendulum.
Trial
1
2
3
4
5
Length of
Length
String (cm) of Pull (cm)
40
10
40
20
55
20
40
55
Number of
Time of
Washers* One Cycle (sec)
1
1.3
2
1.3
1
20
2
20
3
1.3
1.5
1.5
*Each washer has a mass of 10 grams.
balance all of the forces acting on him.
A change in which variable changed the time of
one cycle?
D. resist the force trying to change his direction.
8.
A.
length of string
B.
length of pull
C.
mass of washers
D. number of washers
A satellite that is moving in a circular orbit
around Earth and maintaining a constant speed
will experience a
A.
changing gravitational force toward Earth.
B.
net gravitational force toward Earth.
C.
changing acceleration away from Earth.
D. net acceleration away from Earth.
page 3
Homework Due May 4, 2017
9.
A student studies gravity, using objects that have
the same mass.
10.
Which two objects have the greatest gravitational
force acting between them?
One of the two identical metal spheres is given
a negative charge by rubbing a wool cloth on its
surface.
A.
B.
C.
Next, one sphere is moved so that it touches the
other sphere, and then they are separated. Which
statement correctly describes the spheres after
separation?
D.
A.
Each sphere has a positive charge.
B.
Each sphere has a negative charge.
C.
Sphere 1 is neutral, and sphere 2 has a
negative charge.
D. Sphere 1 has a positive charge, and sphere 2
has a negative charge.
page 4
Homework Due May 4, 2017
11.
Two parallel copper wires are each carrying the
same electrical current in the same direction.
Which statement explains how they respond to
each other?
A.
They repel each other, because they have
similar magnetic elds.
B.
They repel each other, because they have
opposite magnetic elds.
C.
They strengthen each other, because they have
similar magnetic elds.
13.
Which of the following electromagnets would have
the greatest magnetic eld?
A.
B.
D. They strengthen each other, because they have
opposite magnetic elds.
C.
D.
12.
Look at the diagram of the bar magnets below.
What will happen to the force between the two
magnets if they are pulled farther apart?
A.
The force would be weaker.
B.
The force would be stronger.
C.
The force would stay unchanged.
D. The force would reverse the poles.
page 5
Homework Due May 4, 2017
14.
Iron lings and bar magnets were placed on a
sheet of paper. The following diagram shows the
pattern made on the paper.
16.
Where does visible light fall on the electromagnetic
spectrum?
A.
between x-rays and gamma rays
B.
between short-wave radio and television
C.
between infrared and ultraviolet
D. between microwaves and infrared
At which location is the magnetic
strongest?
A.
15.
1
B.
2
C.
3
eld the
17.
D. 4
A sound wave is produced in a metal cylinder by
striking one end. Which of the following occurs
as the wave travels along the cylinder?
A.
Its amplitude increases.
B.
Its frequency increases.
C.
It transfers matter.
The Rocket's Red Glare
On the 4th of July there was a reworks display
near the Connecticut River in Hartford. There
were many di erent colorful reworks in the show.
A spectator saw light from a reworks explosion
then heard a loud noise a few seconds later from
the same explosion. The sound was heard a few
seconds later because the sound
.
D. It transfers energy.
A.
originated a few seconds after the light
B.
traveled farther than the light
C.
traveled more slowly than the light
D. re ected from a di erent location
page 6
Homework Due May 4, 2017
18.
Use these graphs to answer the question.
Wave A
20.
Wave B
The two waves above are traveling at the same
speed. Which statement best describes the
di erence between the waves?
A.
Wave A has a higher frequency than wave B.
B.
Wave A has a lower frequency than wave B.
C.
Wave A has a higher amplitude than wave B.
Each picture shows a light bulb connected to a
battery. Which bulb will light?
A.
B.
C.
D.
D. Wave A has a lower amplitude than wave B.
21.
19.
Which best describes a parallel circuit?
A.
Electricity ows along one pathway.
B.
The ow of electricity comes from one
source.
C.
Electricity ows along more than one pathway.
In this circuit, what is the current through the
2-ohm resistor?
A.
0.2 A
B.
0.8 A
C.
5.0 A
D. 8.0 A
D. The ow of electricity comes from more than
one source.
page 7
Homework Due May 4, 2017
22.
25.
In the circuit shown above, the meter registers
1.5 amperes. The voltage across the 10.0-ohm
resistor is about
23.
A.
1.5 V.
B.
C.
8.5 V.
D. 15.0 V.
Which solute exhibits the least response to
temperature change?
A.
NH4 Cl
B.
KCl
C.
HCl
D. NH3
A 9-V battery is connected to a light bulb with
a resistance of 3 . What is the current in the
circuit?
A.
24.
6.7 V.
27 A
B.
3.0 A
C.
1.0 A
D. 0.3 A
Kareem wants to dissolve rock salt in a glass of
water at room temperature.
Which process will speed up the time it takes for
the salt to dissolve?
A.
Add hot water to the glass.
B.
Add cold water to the glass.
C.
Pour the water into a larger container.
D. Pour the water into a smaller container.
page 8
Homework Due May 4, 2017
26.
This graph shows the solubility curves for various
ionic compounds.
28.
The atomic number of iron is 26, and the atomic
mass is 55.847. What do these numbers mean in
regard to protons, electrons and neutrons?
A.
There are 26 each of protons and neutrons,
and the rest of the mass is the result of
electrons.
B.
There are 26 protons and 26 electrons. Some
atoms of iron have 29 neutrons; the .847
shows that there is more than one isotope of
iron.
C.
There are 26 protons and 29 neutrons. Each
particle has an atomic mass of 1.
D. There are 26 protons and 26 neutrons.
Since neutrons have slightly more mass than
protons, the mass is greater than 52.
Which compound is most a ected by a change in
temperature from 30 C to 50 C?
27.
A.
CsNO3
B.
NH4 Br
C.
CuSO4
D. KCl
29.
The chemical properties of an element are
determined by its
A.
atomic mass.
B.
proton number.
C.
electron arrangement.
30.
D. atomic size.
Which of the following atoms has six valence
electrons?
A.
magnesium (Mg)
B.
silicon (Si)
C.
sulfur (S)
D. argon (Ar)
Which statement best describes the density of an
atom's nucleus?
A.
The nucleus occupies most of the atom's
volume but contains little of its mass.
B.
The nucleus occupies very little of the atom's
volume and contains little of its mass.
C.
The nucleus occupies most of the atom's
volume and contains most of its mass.
D. The nucleus occupies very little of the atom's
volume but contains most of its mass.
page 9
Homework Due May 4, 2017
31.
The label below contains information about an
unknown metal.
34.
The reason salt crystals, such as KCl, hold
together so well is because the cations are strongly
attracted to
A.
neighboring cations.
B.
the protons in the neighboring nucleus.
C.
free electrons in the crystals.
D. neighboring anions.
How many valence electrons does the unknown
metal have?
A.
32.
1
3
C.
4
D. 6
Which of the following correctly shows how
carbon and hydrogen bond to form a compound?
A.
[4H]+4 [C]
C.
33.
B.
4
B.
[H]+ [C]
D.
Some of the molecules found in the human body
are NH2 CH2 COOH (glycine), C6 H12 O6 (glucose),
and CH3 (CH2 )16 COOH (stearic acid). The bonds
they form are
A.
nuclear.
B.
metallic.
C.
ionic.
D. covalent.
page 10
Homework Due May 4, 2017
35.
The pictures below show the structures of two
polymers.
36.
Use the diagram below to answer the following
question.
How many bonds are made by each carbon atom
in the molecule shown above?
A.
37.
What can be concluded from comparing these two
pictures?
A.
Polymers are easily broken down into their
component parts.
B.
The same number of carbon atoms may be
arranged in various ways.
C.
one
B.
two
C.
three
D. four
Which of the following models correctly represents
the compound phosphorus trichloride (PCl3 )?
A.
B.
Linear polymer strres are stronger than ringed
polymer structures.
D. It takes fewer monomers to form a linear
polymer than a ringed polymer.
C.
D.
page 11
Homework Due May 4, 2017
38.
Jonas needs to split a log. He has a sledge
hammer. What other tool should he also use to
split the log?
A.
a lever
B.
C.
a wedge
D. a fulcrum
40.
a pulley
Alexa wants to build a machine for her technology
class. To think of ideas, she drew four sketches of
moving parts for her machine. Which design will
work?
A.
B.
39.
C.
The picture shows a ladder leaning against a wall.
D.
A person climbing this ladder is using the ladder
as
A.
a lever.
B.
C.
a simple gear.
D. an inclined plane.
41.
a wedge.
page 12
A total of 750 J of work was done when a force
of 125 N was exerted on a box to move it. How
far was the box moved?
A.
6.00 m
B.
600. m
C.
850. m
D. 906 m
Homework Due May 4, 2017
42.
If a 6.0-N force is required to move a box through
a distance of 2.0 m, how much work is done?
A.
3.0 J
B.
4.0 J
C.
8.0 J
2Na(s) + Cl2 (g) ! 2NaCl(s)
45.
s = solid
D. 12 J
g = gas
The equation represents a chemical change because
.
43.
Di erent arrangements of atoms are shown in the
gures below.
A.
it is balanced
B.
the product is solid
C.
a new substance is produced
D. there are two substances on the reactant side
Which gure represents a mixture?
A.
Figure 1
B.
Figure 2
C.
Figure 3
D. Figure 4
46.
44. The following equations represent chemical
reactions.
In making a pizza, which process involves a
chemical change?
A.
mixing spices for the sauce
B.
slicing pepperoni for the topping
C.
spreading cheese on the pizza
D. baking the dough to form the crust
Which equation shows that the total mass during a
chemical reaction stays the same?
A.
1
B.
2
C.
3
D. 4
page 13
Homework Due May 4, 2017
47.
The law of conservation of mass can be
demonstrated by a chemical reaction. Which of
the following models of a chemical reaction best
represents the law of conservation of mass?
49.
Which equation correctly represents the alpha
decay of polonium-214?
A.
A.
B.
B.
C.
C.
D.
D.
50.
48.
Alpha particle radiation will most likely result
when
A.
two atoms are near one another.
B.
the nucleus becomes unstable.
C.
atoms become charged.
Which of the following is an example of nuclear
fusion?
A.
Hydrogen-1 and hydrogen-2 combine to form
helium-3.
B.
Polonium-210 decays into lead-206 and an
alpha particle.
C.
Carbon-14 breaks down into a beta particle
and nitrogen-14.
D. Uranium-235 and a neutron produce
barium-141, krypton-92, and three neutrons.
D. electrons gain energy.
page 14
Homework Due May 4, 2017
51.
The equation below shows the radioactive decay
of thorium (Th).
54.
Which of the following is responsible for this
change?
Which of the following particles is released in this
reaction?
beta (0 1 e)
A.
alpha (42 He)
B.
C.
neutron (10 n)
D. proton (11 H)
A hospital buys a compound that contains an
isotope of barium. Several months later, most of
the barium has changed to the element lanthanum.
A.
exposure to air
B.
radioactive decay
C.
reactions with the container wall
D. absorption of moisture from the air
52.
53.
The three main types of nuclear radiation are
alpha, beta, and gamma. Which of the following
lists these types of radiation from highest
penetrating power to lowest penetrating power?
A.
alpha, gamma, beta
B.
beta, alpha, gamma
C.
beta, gamma, alpha
D. gamma, beta, alpha
Uranium forms thorium and helium, as shown in
the equation below.
238
U
92
! 234
Th + 42 He
90
Which of the following does this equation
represent?
A.
decomposition reaction
B.
physical change
C.
radioactive decay
D. synthesis reaction
page 15
Homework Due May 4, 2017
55.
The diagram below shows what happens to an
atom of uranium-235 when bombarded by a
neutron 10 n.
57.
58.
56.
140
Ba
56
B.
144 Cs
55
C.
146
La
57
D.
A.
1,600 years
B.
3,200 years
C.
4,800 years
D. 6,400 years
A rock sample contains 80 g of a potassium-40
(K40
) isotope with a half-life of 1.25 billion years.
19
How much of the potassium-40 isotope will remain
after 2.5 billion years have passed?
Which isotope is represented by X in the diagram?
A.
A 100-gram sample of radium-226 has a half-life
of 1,600 years. How long will it take before there
are only 12.5 grams of the radioactive radium-226
remaining?
90
Rb
37
A.
0g
B.
10 g
C.
20 g
D. 80 g
The half-life of phosphorus-32 is 14.3 days. How
much of a sample of phosphorus-32 will remain
after 57.2 days?
A.
1
32
B.
1
16
C.
1
8
D.
1
4
page 16
Homework Due May 4, 2017
59.
The picture below shows a student pulling on a
rope that is attached to a wall. wall
60.
A crate is being pulled along a oor by means of
two ropes. A frictional force opposes the motion
of the crate. The diagram below shows these three
forces acting on the crate.
What is the magnitude of the net force acting on
the crate?
Which statement correctly describes the amount of
force applied by the wall as the student continues
to apply a 250-newton force?
A.
The wall pulls with a force of 125 newtons
against the student.
B.
The wall pulls with a force of 250 newtons
against the student.
C.
The wall exerts twice as much force as the
student.
A.
800 N
B.
1000 N
C.
1400 N
D. 2000 N
D. The wall exerts no force since it is stationary.
page 17
Homework Due May 4, 2017
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Terms of Use at www.problem-attic.com
Homework Due May 4, 2017
XXXX-XX-XX
1.
Answer:
C
21.
Answer:
C
2.
Answer:
C
22.
Answer:
D
3.
Answer:
D
23.
Answer:
B
4.
Answer:
C
24.
Answer:
A
5.
Answer:
C
25.
Answer:
B
6.
Answer:
A
26.
Answer:
A
7.
Answer:
A
27.
Answer:
8.
Answer:
B
28.
Answer:
9.
Answer:
A
29.
Answer:
C
10.
Answer:
B
30.
Answer:
D
11.
Answer:
A
31.
Answer:
B
12.
Answer:
A
32.
Answer:
C
13.
Answer:
D
33.
Answer:
D
14.
Answer:
D
34.
Answer:
D
15.
Answer:
D
35.
Answer:
B
16.
Answer:
C
36.
Answer:
D
17.
Answer:
C
37.
Answer:
A
18.
Answer:
B
38.
Answer:
C
19.
Answer:
C
39.
Answer:
D
20.
Answer:
D
40.
Answer:
A
Teacher's Key
41.
Answer:
42.
Answer:
D
43.
Answer:
C
44.
Answer:
C
45.
Answer:
C
46.
Answer:
D
47.
Answer:
A
48.
Answer:
B
49.
Answer:
D
50.
Answer:
A
51.
Answer:
A
52.
Answer:
D
53.
Answer:
C
54.
Answer:
B
55.
Answer:
A
56.
Answer:
B
57.
Answer:
C
58.
Answer:
C
59.
Answer:
B
60.
Answer:
A
Page 2