Free Printable 1st Semester Review

1.

Which is NOT an example of chemical change?

a)

production of gas.

b)

change in color.

c)

change in size.

d)

transfer of energy.

2.

In the equation, 2Mg + O₂ ---> 2MgO, which are the reactants?

a)

Mg and O

b)

MgO

c)

Mg and MgO

d)

O and MgO

3.

How many elements are in C₆H₁₂O₆?

a)

1

b)

2

c)

3

d)

4

4.

Which is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)

a)

H₃SO₄

b)

HSO₄

c)

H₄S₃O

d)

H₂O

5.

What element is represented in this Bohr Model?

a)

Carbon

b)

Hydrogen

c)

Aluminum

d)

Lithium

6.

Which is an electron?

a)

A

b)

B

c)

C

7.

What is the atomic number?

a)

The number of protons in an element

b)

The number of neutrons in an element

c)

The number of protons and neutrons.

d)

The number of protons and electrons.

8.

What is found in the nucleus of atoms?

a)

Protons and electrons.

b)

Protons, neutrons, and electrons.

c)

Protons and neutrons.

d)

Neutrons and electrons.

9.

How many valence electrons does Sodium (Na) have?

a)

1

b)

2

c)

3

d)

4

10.

Al₂

a)

Element

b)

Molecule

c)

Compound

11.

an atom with atomic number 6 would have how many protons

a)

6

b)

12

c)

3

d)

cannot be determined

12.

Particles in an atom that are neutral and have no charge are

a)

negatrons

b)

electrons

c)

neutrons

d)

protons

13.

If the mass number of this chlorine atom is 36, how many neutrons does it have?

a)

17

b)

18

c)

19

d)

can't be determined

14.

What is the mass number of the atom shown in the Bohr model?

a)

11

b)

12

c)

23

d)

Can't be determined

15.

what group number are the noble gases

a)

17

b)

18

c)

14

d)

15

16.

A student added white crystals to a clear liquid. The crystals dissolved in the liquid. After a few seconds, the liquid became quite warm and then turned bright red in color. The first indication that a chemical change was taking place could be observed when?

a)

The crystals were added to the liquid.

b)

The crystals dissolved in the liquid.

c)

The temperature of the liquid increased.

d)

The color of the mixture changed.

17.

The table shows the properties of three classifications of elements. What are the best headings for columns A, B, and C?

a)

Metals, Nonmetals, Metalloids

b)

Nonmetals, Metalloids, Metals

c)

Metals, Metalloids, Nonmetals

d)

Nonmetals, Metals, Metalloids

18.

All of these properties describe metals EXCEPT?

a)

Malleable

b)

Conductor

c)

Brittle

d)

Shiny

19.

The table shows the physical properties of four elements. Which element is classified as a metalloid?

a)

Titanium

b)

Selenium

c)

Potassium

d)

Polonium

20.

The provided table shows the properties of four different sample materials. A student has a substance with a density of 1.28 g/cm3. Which sample does the student have?

a)

Sample 1

b)

Sample 2

c)

Sample 3

d)

Sample 4

21.

The table provided identifies a substance based on its density. A sample of an unknown substance has a mass of 89 grams and a volume of 10 cm3. Based on its density, it could be which of the following substances?

a)

Aluminum

b)

Brass

c)

Copper

d)

Gold

22.

Use the chart below to answer the following question. A student is given the chart above and is told to identify an unknown mineral. The student observes that the mineral has a glassy luster and a hardness less than 3. What is the identity of the mineral?

a)

Actmite

b)

Cobaltite

c)

Jadeite

d)

Talc

23.

Which of the following is an example of a physical change that occurs during digestion?

a)

In the stomach, pepsin turns proteins to amino acids

b)

In the mouth, enzymes break down carbohydrates

c)

In the stomach, contractions mix and churn food

d)

In the intestines, fatty acids are extracted from lipids

24.

What is the mass of an atom with seven protons, seven neutrons, and eight electrons?

a)

7

b)

8

c)

14

d)

22

25.

What is the net force?

a)

5000 N right

b)

4000 N right

c)

40 N left

d)

4000 N left

26.

How many molecules of Carbon are in the following formula? 3C₂H₆

a)

3

b)

6

c)

12

d)

18

27.

How many Oxygen (O) atoms are in 2C₂HO₈C_l2

a)

2

b)

16

c)

8

d)

5

28.

What law is best described by inertia?

a)

1st

b)

2nd

c)

3rd

d)

law of conservation of mass

29.

What is Newton's Third Law?

a)

Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force

b)

Force = mass x acceleration

c)

For every action there is an equal and opposite reaction

30.

When something has speed in a certain direction it is called ___________.

a)

motion

b)

position

c)

velocity

d)

speed

31.

Acceleration of an object happens when things ________

a)

slow down

b)

go faster

c)

change direction (turn)

d)

All of the above

32.

A 20 kg bike accelerates at 10 m/s². what was the force?

a)

25 Newtons

b)

20 Newtons

c)

200 Newtons

d)

10 Newtons

33.

Is the following equation balanced?...
Al + O₂ --> 2Al₂O₃

a)

Yes!

b)

No!

34.

Element or compound?
H₂O

a)

Element

b)

Compound

35.

How many atoms are in the neurotransmitter serotonin? The formula for serotonin is C₁₀H₁₂N₂O

a)

10

b)

20

c)

25

d)

23

36.

Which of the following statements best describes the subatomic particle at location X?

a)

It has a very large mass and is negatively charged.

b)

It has almost no mass and no charge.

c)

The charge of the subatomic particle at location x is opposite of the charge at location y.

d)

It has a positive charge similar to location y.

37.

How does the mass of location y compare to the mass at location x?

a)

Location y has a mass multiple thousand times larger than location x.

b)

Location y has a mass only slightly larger than location x.

c)

Location x and y have the same mass.

d)

Location x has a mass twice as large as location y.

38.

What are the names of the two subatomic particles located at y?

a)

protons and electrons

b)

neutrons and protons

c)

neutrons and electrons

d)

protons and neutrinos

39.

Which of the particle in the chart below is a neutron?

a)

Particle A

b)

Particle B

c)

Particle C

d)

None of the above

40.

Sara creates a chemical reaction between sodium and chlorine. How many valence electrons are transferred between the two atoms in the model below?

a)

1 electron

b)

2 electrons

c)

3 electrons

d)

4 electrons

41.

Sara creates a chemical reaction between sodium and chlorine. How many valence electrons are transferred between the two atoms in the model below?

a)

1 electron

b)

2 electrons

c)

3 electrons

d)

4 electrons

42.

Which of these atoms will be more reactive and why?

a)

Atom A, because it has fewer electrons.

b)

Atom A, because it has unequal charges.

c)

Atom B, because it gives up a valence electron.

d)

Atom B, because it more neutrons.

43.

In question 5, what identifies the atom on the left as sodium (Na)?

a)

Sodium always has an equal balance of neutrons and electrons.

b)

No other atom can have only one valence electron.

c)

Only sodium can chemically react and bind with chlorine.

d)

Sodium is the only element with 11 protons.

44.

The tendency of an element to react with other elements to produce compounds.

a)

Chemical change

b)

Neutrality

c)

Reactivity

d)

Valence

45.

Which statement correctly describes the location and charge of the electrons in an atom?

a)

F

b)

G

c)

H

d)

J

46.

Which statement accurately describes the atoms of a specific element?

a)

F

b)

G

c)

H

d)

J

47.

a)

21

b)

34

c)

13

d)

47

48.

a)

48

b)

96

c)

160

d)

112

49.

a)

A

b)

B

c)

C

d)

D

50.

Question 1

a)

A

b)

B

c)

C

d)

D

51.

Question 2

a)

A

b)

B

c)

C

d)

D

52.

Question 2

a)

A

b)

B

c)

C

d)

D

53.

Question 3

a)

A

b)

B

c)

C

d)

D

54.

Question 4

a)

A

b)

B

c)

C

d)

D

55.

Question 5

a)

A

b)

B

c)

C

d)

D

56.

Question 7

a)

A

b)

B

c)

C

d)

D

57.

Question 8

a)

A

b)

B

c)

C

d)

D

58.

Question 96

a)

A

b)

B

c)

C

d)

D

59.

Question 97

a)

A

b)

B

c)

C

d)

D

60.

If these boys are pulling with the same amount of force. What will happen?

a)

The boy in blue will win.

b)

They will not move at all.

c)

The boy in red will win.

d)

Both will fall down.

61.

What does this graph represent?

a)

Constant speed

b)

Acceleration

c)

Not moving

62.

If a 10 kilogram object accelerates suddenly at 15 m/s², how much force was applied to the object?

a)

150 Newtons

b)

15 Newtons

c)

150 kilograms

d)

100 kilograms

63.

During which interval is the object speeding up?

a)

A to B

b)

B to C

c)

D to E

d)

E to F

64.

The tendency of an object at rest to stay at rest unless it is acted upon by a force is ___________________

a)

inertia

b)

motion

c)

gravity

d)

lubricant

65.

What force causes rivers to run downhill?

a)

sliding friction

b)

gravity

66.

Which is an example of Newton's 2nd Law of Motion? (the acceleration of an object depends on the mass of the object and the force applied)

a)

throwing a baseball

b)

swimming

c)

jumping on a trampoline

d)

pushing a full shopping cart vs. pushing an empty shopping cart

67.

Force = Mass x Acceleration
How much force is needed to accelerate a 130 pound runner at 2 m/sec?

a)

9800 N

b)

2000 N

c)

260 N

d)

65 N

68.

A bowling ball and a soccer ball are rolling at the same speed on the same surface. Why will the bowling ball be harder to stop?

a)

it has greater velocity

b)

it has greater momentum

c)

it has greater friction

d)

it has greater acceleration

69.

A change in position or location

a)

Magnetism

b)

Gravity

c)

Position

d)

Movement

70.

The picture of the position vs. time graph shows an object that is...

a)

accelerating/speeding up

b)

moving at a constant speed

c)

not moving

d)

accelerating/slowing down.

71.

55 mph north is an example of....

a)

speed

b)

velocity

c)

direction

d)

force

72.

Which of the following IS NOT acceleration?

a)

change in speed

b)

change in direction

c)

change in speed or direction

d)

change in mass

73.

Force is measured in _____________.

a)

centimeters

b)

grams

c)

newtons

d)

liters

74.

__________ is the sum of all forces acting on an object. It is capable of accelerating a mass.

a)

velocity

b)

gravity

c)

net force

d)

distance

75.

If two forces act on an object in the same direction, the net force is the _____________

a)

the difference between the two forces

b)

the sum of the two forces

c)

Only one of the forces acts on the object

d)

The multiplication of both forces

76.

According to the graph how far does the person travel in the first 5 seconds?

a)

2 m

b)

10 m

c)

0 m

d)

5 m

77.

What is happening at D?

a)

Stationary

b)

Accelerating

c)

Fast steady speed; moving away from the starting position

d)

Slower steady speed; moving away from the starting position

78.

Which runner won the race?

a)

A

b)

B

c)

C

79.

How many times does this object STOP moving?

a)

None

b)

Once

c)

Twice

d)

Three times

80.

Which of the following is NOT an example of acceleration?

a)

A car traveling at a steady speed of 20 km/hr

b)

A runner sprinting at a rate of 10 m/s and then slowing down at the finish line

c)

A planet orbiting the sun

d)

The dot-car traveling down a ramp

81.

What does this graph represent?

a)

Constant Speed

b)

Acceleration

c)

Not moving

82.

What is the person doing from 5 seconds to 10 seconds?

a)

Walking

b)

Running

c)

Standing Still

d)

Walking Fast

83.

How far is the person from the starting point after 3 seconds?

a)

0 m

b)

2 m

c)

3 m

d)

6 m

84.

During which segment is the object moving at the fastest speed?

a)

A

b)

B

c)

C

d)

D

85.

What does this graph represent?

a)

Constant speed

b)

Acceleration

c)

Not moving

86.

What is happening between 2 and 3 seconds?

a)

The object is not moving.

b)

The object is not accelerating.

c)

The object is slowing down.

d)

The object is speeding up.

87.

At which point is potential energy greatest?

a)

W

b)

X

c)

Y

d)

Z

88.

At which point is kinetic energy greatest?

a)

W

b)

X

c)

Y

d)

Z

89.

When a pendulum swings, at which point is kinetic energy highest?

a)

1

b)

2

c)

3

d)

4

90.

Which point has the most potential energy?

a)

G

b)

f

c)

b

d)

a

91.

Which of Newtons laws most accurately explains the situation:
It takes more force to move a shot put than a softball

a)

1st law

b)

2nd law

c)

3rd law

92.

Which of Newtons laws most accurately explains the situation:
Seat belts and airbags stop you from going through the windshield of a car if you are in an accident

a)

1st law

b)

2nd law

c)

3rd law

93.

Which of Newtons laws most accurately explains the situation:
The more force you throw a football with, the faster it will go

a)

1st law

b)

2nd law

c)

3rd law

94.

Which of the following pictures is an example of a chemical change?

a)

Wood burning in a fireplace

b)

ice melting in water in a beaker

c)

a cracked rock

d)

boiling water on a hotplate

95.

Samuel kicks a soccer ball across a grassy field and it eventually comes to a stop. If Newton’s law of inertia is true, why did the ball stop?

a)

Newton’s law only applies to objects at rest.

b)

The mass of the ball is not great enough to have inertia.

c)

Friction with the grass applies a net force on the ball causing it to decrease its speed.

d)

Gravity slowed the ball until it came to a stop.

96.

In the case of a car crash, the body’s inertia will continue to carry it in its initial direction. However, if the person is wearing a seatbelt, in which direction will this force act?

a)

to the right

b)

to the left

c)

upward

d)

downward

97.

Suppose you pull Nick, who is standing on a skateboard, using a rope at a constant acceleration. Nick’s friend, who weighs the same as Nick, then gets on the skateboard too. How is the force you have to apply to the rope affected to maintain the same constant acceleration?

a)

There will be no change to the required amount of force.

b)

The amount of force required is slightly increased.

c)

The amount of force required is doubled.

d)

The amount of force required is four-times as great.

98.

The data chart below indicates how carts of different mass accelerate when a constant force is applied. Using the data, determine the amount of force used in Newtons.

a)

1N

b)

2N

c)

4N

d)

8N

99.

Josh Hamilton crushes a home run over the center field wall. The ball is struck with a force of 20 N. How much force does the ball apply to the bat?

a)

5N

b)

10 N

c)

20 N

d)

40 N

100.

Describe the movement of the box in between the two trucks pulling on it.

a)

It moves to the left at an increasing speed.

b)

It moves to the right at an increasing speed.

c)

It moves to the left at a constant speed.

d)

It moves to the right at a constant speed.

101.

What is the net force acting on this balloon?

a)

7 N to the right

b)

10 N to the right

c)

6 N to the left

d)

4 N to the right

102.

Frank drew the following chart using data from an experiment he conducted on a toy car. At what point does the car have an unbalanced force acting on it?

a)

5s

b)

15 s

c)

25 s

d)

35 s

103.

A rocket has a downward force of 1 N due to gravity and an upward force of 1 N. The rocket is:

a)

launching and accelerating upward

b)

reaching the peak of its traveled height

c)

increasing its speed as it is falling

d)

accelerating either upward or downward

104.

Capt. Sanchez announces to the passengers on his airplane they are traveling at 300 mph 950 eastbound. He is describing the ___________________ of the airplane.

a)

velocity

b)

speed

c)

direction

d)

acceleration

105.

Annabelle walks to school every day from her house. The diagram below shows the distance from her house to school measured in 1 km increments. If it takes her 30 minutes to walk to school, what was her average speed?

a)

4 km/hr

b)

7.5 km/hr

c)

8 km/hr

d)

0.13 km/hr

106.

Samuel throws a ball into the air 20 meters. It reaches the top of its flight at 2 seconds and hits the ground at 4 seconds? What was the ball’s average speed on the way down?

a)

5 m/s

b)

10 m/s

c)

20 m/s

d)

40 m/s

107.

A train is traveling away from you at a constant speed. What would a distance-time graph look like for this train?

a)

A

b)

B

c)

C

d)

D

108.

What is the average speed walked in the walk-a-thon?

a)

810 m/s

b)

90 m/s

c)

10 m/s

d)

9 m/s

109.

A train is traveling away from you at a constant speed. What would a distance-time graph look like for this train?

a)

A

b)

B

c)

C

d)

D

110.

What is the force on a 1000 kg elevator that is falling freely at 9.8 m/s²? To solve this problem you must do -

a)

1000 ÷ 9.8

b)

9.8 ÷ 1000

c)

1000 x 9.8

111.

A hobbyist collected data about the motion of a toy train on a straight track and then recorded the data in the graph. Which of these accurately describes the motion of the toy train?

a)

The toy train speeds up while going forward and then slows down.

b)

The toy train slows down while going forward and then moves backward.

c)

The toy train moves forward at a constant speed, slows down, and then stops.

d)

The toy train moves forward at an increasing speed, stops, and then moves forward.

112.

Question 117

a)

A

b)

B

c)

C

d)

D

113.

Question 132

a)

A

b)

B

c)

C

d)

D

114.

Question 140

a)

A

b)

B

c)

C

d)

D

115.

Four students push carts filled with sports equipment across the gym. Each student pushes with the same amount of force. Which card has the greatest change in speed?

a)

b)

c)

d)

116.

The diagram shows two different forces acting on a cyclist riding a bicycle. The total mass of the cyclist and the bicycle is 100.0 kg. Based on this information, what is the acceleration of the cyclist?

a)

0.66 m/s² backward, because the force of the air slows the cyclist down.

b)

0.66 m/s² forward, because the applied force is greater than the force of the air.

c)

2.3 m/s² backward, because the forces are opposite and not equal

d)

2.3 m/s² forward, because the cyclist's inertia is greater than the force of the air.

117.

Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop?

a)

The car with the smaller mass will require less force to stop than the car with the larger mass.

b)

The car with the larger mass will maintain its velocity while traveling down the hill.

c)

The car with the smaller mass will take longer to stop than the car with the larger mass.

d)

The car with the larger mass will have less inertia than the car with the smaller mass.

118.

Which of the following best describes the velocity of an object?

a)

30 m/s

b)

30 m east

c)

30 m/s east

d)

30 m/s²

119.

A student drew the diagram to show the movement of water through a hydroelectric dam. The student used the diagram to describe changes in the potential and kinetic energy of the water. At which location is the gravitational potential energy of the water the greatest?

a)

Location W

b)

Location X

c)

Location Y

d)

Location Z

120.

A block is pulled 0.90 m to the right in 2.5 s. What is the block's average speed to the nearest hundredth of a m/s?

a)

2.78 m/s

b)

2.25 m/s

c)

0.36 m/s

d)

2.78 f/s

121.

A student runs two times around a running path at a local park. Each lap is 3 km. The student completes the first lap in 20 minutes. The student then sits on a bench and rests for 5 minutes before completing the second lap in 25 minutes. Which graph best represents the student's motion?

a)

b)

c)

d)

1st Semester Review

Total questions: 121

Worksheet time: 3hrs 47mins

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