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2425 7th Honors Mega Semester Review

Total questions: 136

Worksheet time: 2hrs 6mins

Name
Class
Date
1.

Which of the following is the #1 evidence of a chemical reaction

a)

bubbles

b)

color change

c)

new substance forms

d)

phase change

2.

Na2SO4 -------> 2Na + SO4

What happens to the mass of the reactant in the chemical formula above?

a)

The Na(Sodium) is increased

b)

The Na(Sodium is decreased

c)

The mass stays the same

d)

The mass of S (Sulfur) doubles

3.

CaCl2 + Na2SO4 --------> Ca(SO4) +NaCl

110g + 142g --------> ?? + 116

a)

110

b)

142

c)

136

d)

252

4.

CaCl2 + Na2SO4 --------> Ca(SO4) +NaCl

Identify the elements in the reaction above

a)

Calcium, Chlorine, Sodium, Sulfur & Oxygen

b)

Calcium, Chlorine, Nitrogen, Silicon & Oxygen

c)

Carbon, Chlorine, Sodium, Silicone & Oxygen

d)

Carbon, Chlorine, Sodium, Sulfur & Oxygen

5.

The total mass of the reactants must equal the total mass of the product according to the law of conservation of mass.

a)

True

b)

False

6.

Which of the following are possible evidence of a chemical reaction? Select all that apply.

a)

gas is produced

b)

crystals dissolve

c)

a precipitate forms

d)

temperature change

7.

Sort the following into the right category

Categorize the following

cutting in half

melting

evaporating

new substance forms

temperature change

percipitate forms

Physical Change
Chemical Change
8.

Sort the following into the right category

Categorize the following

tearing in half

dissolving sugar in water

rotting fruit

rust forms

burning firewood

percipitate forms

melting ice cream

digesting food

boiling water

baking

Physical Change
Chemical Change
9.

An element is a pure substance, how many different kinds of atoms does it have?

a)

1

b)

2

c)

3

d)

4

10.

Saltwater is what type of mixture

a)

Homogeneous mixture (solution)

b)

Heterogeneous mixture

11.

Oil and water are what type of mixture?

a)

Homogeneous

b)

Heterogeneous

12.

What kind of mixture is shown in the picture?

a)

Homogeneous

b)

Heterogeneous

13.

What kind of mixture is shown in the picture?

a)

Homogeneous

b)

Heterogeneous

14.
The _____is the part that gets dissolved. 
a)
solute 
b)
solvent 
c)
solution 
d)
Sacajawea 
15.
A solution is a kind of ________. 
a)
mixture 
b)
compound 
c)
element 
d)
stuff 
16.
When one of the parts of the solution is water we call it _________. 
a)
water stuff 
b)
water mixture 
c)
aqua-man
d)
aqueous 
17.

In order to dilute a solution, you need to

a)

add more of the solid

b)

add more water

c)

find the mass

d)

find the volume

18.

What term describes a substance that dissolves another substance?

a)

Solvent

b)

Solute

c)

Solution

d)

Suspension

19.

How does the temperature of water affect the speed of dissolving?

a)

Cold water slows down dissolving.

b)

Cold water speeds up dissolving.

c)

Hot water slows down dissolving.

d)

Water temperature does not affect rate of dissolving.

20.
Solutions are composed of __________ .
a)
salts and solutes
b)
solvents and salts
c)
solutes and alloys
d)
solutes and solvents
21.

What happens to sugar when it is dissolved in water?

a)

The sugar changes chemically

b)

The temperature of the water increases as the sugar melts

c)

The sugar grains get smaller in size until they can not be seen

d)

The water turns colors

22.

How does adding heat affect the rate of dissolving?

a)

slows it down

b)

make it dissolve faster

c)

does nothing

23.

How does agitation (stirring) affect the rate of dissolving?

a)

slows it down

b)

make it dissolve faster

c)

does nothing

24.

Select the following that would help increase the rate a solute would dissolve in an solution.

a)

agitating

b)

adding ice

c)

crushing the solute

d)

adding more solute

e)

heating the solution

25.

When water molecules are attracted to each other this is known as

a)

cohesion

b)

adhesion

26.

Some bugs are allowed to creep along the top of a body of water, why is this?

a)

Surface Tension

b)

Adhesion

c)

heat

27.

What type of test is used to determine if a liquid is an acid or basic?

a)

pH test

b)

salinity test

c)

oxygen test

28.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
29.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
30.

When making koolade, the powder mix is the ​ (a)   , the water is the ​ (b)   .

Choose from the below words
solute
solvent
31.

Adding more solute to a solvent will make it more

a)

concentrated

b)

diluted

32.

What type of thermal energy transfer causes a hot air balloon to rise?

a)

Radiation

b)

Convection

c)

Conduction

d)

none of the above

33.

Which of the following describes what happens to particles when a substance is cooled?

a)

A. kinetic energy increases

b)

B. kinetic energy decreases

c)

C. potential energy increases

d)

D. potential energy decreases

34.

Which method of heat transfer is caused by touch?

a)

Conduction

b)

Convection

c)

Radiation

35.

Which method of heat transfer by waves causing the heat to be felt by someone sitting near the candle?

a)

Conduction

b)

Convection

c)

Radiation

36.

Choose two below that are NOT good conductors of thermal energy.

a)

Metal Pan

b)

Metal Fork

c)

Metal Knife

d)

Plastic Handle

e)

Wooden Handle

37.

What type of energy transfer occurs when warm air rises and forces cooler air masses downward?

a)

A. Radiation

b)

B. Convection

c)

C. Conduction

d)

D. None of the above

38.

If a large container has two sides of water, one is 70°C and the water on the other side is 50°C. How will you know when the container has reached thermal equilibrium?

a)

The temperature of the water on the warmer side will have cooled to 50°C.

b)

The temperature throughout the container will be approximately 60°C.

c)

The temperature of the water on the cooler side will have warmed to 70°C.

d)

Convection currents will prevent this system from reaching thermal equilibrium.

39.

The higher the temperature the higher the __________ energy?

a)

stored

b)

kinetic

c)

potential

40.

Which of the following is an example of conduction?

a)

Heat from the sun warming your face

b)

A metal spoon getting hot from a boiling pot of water

c)

Warm air rising to the ceiling

d)

A thermos keeping coffee hot

41.

What type of heat transfer occurs when warm air rises and cool air sinks?

a)

Conduction

b)

Convection

c)

Radiation

d)

Insulation

42.

The greater the motion of particles in a substance, the ________ a substance’s temperature.

a)

higher

b)

lower

43.

When does water (H20) have the most kinetic energy?

a)

as a solid piece of ice

b)

as a cool liquid

c)

when it is boiling

d)

as a vapor being released back into the atmosphere

44.

Heat from a fireplace goes out by electromagnetic waves into the room. Which type of thermal energy is present?

a)

A. Radiation

b)

B. Convection

c)

C. Conduction

d)

D. None of the above

45.

Explain the kinetic energy of a cup of hot water and one with room temperature water.

a)

The particles in the cup of hot water will have identical kinetic energy to the particles in the cup of room temperature water.

b)

All of the kinetic energy in the hot water particles will be higher than in the room temperature water.

c)

Most of the kinetic energy in the hot water particles will be higher than in the room temperature water.

d)

None of the kinetic energy in the hot water particles will be higher than in the room temperature water.

46.

What is the primary method of thermal energy transfer in liquids and gases?

a)

Conduction

b)

Convection

c)

Radiation

d)

Reflection

47.

When dealing with temperature, what do you know about the speed of atoms in a cold object?

a)

They are moving very fast

b)

They aren't moving at all

c)

They are moving slowly

d)

They are moving too fast to be detected.

48.

What causes hot and cold water to become the same temperature once they are combined?

a)

The heat moves from cooler temperature to warmer temperature.

b)

The energy of the hot water runs out.

c)

Heat (thermal) energy from the hot water is transferred to the cold water.

d)

Heat (thermal) energy causes the water to boil.

49.

If you added ice (0oC) to a glass of water (15oC) how would the heat move between the ice & water?

a)

from the ice to the water

b)

from the water to the ice

50.
Thermal energy always moves from a ______ area to a ______ area.
a)
bigger, smaller
b)
colder, hotter
c)
higher, lower
d)
warmer, cooler
51.

In a professional kitchen, which material for pots and pans would best conduct heat for cooking?

a)

Wood

b)

Plastic

c)

Metal

d)

Glass

52.

What is an example of heat transfer by radiation?

a)

Touching a hot stove

b)

Using a blanket to stay warm

c)

Feeling the warmth of the sun on your face

d)

Stirring hot soup

53.

How does the heat from the Sun reach the Earth?

a)

Conduction

b)

Convection

c)

Radiation

d)

None of the above

54.

Newton's first law states that an object at rest will stay at rest, what is the name of Newton's First Law?

a)

Law of Inertia

b)

Law of Force and Acceleration

c)

Law of Action Reaction

55.

Unbalanced forces always _________.

a)

Speed

b)

Have Velocity

c)

Accelerate

56.

What is the net force of the box

a)

10 N Right

b)

10 N Left

c)

20 N Right

d)

20 N Left

57.

True or False, The object above is going a constant speed.

a)

True

b)

False

58.

If you dive off of a pool raft and go forward and the raft goes backwards, which of newton's three laws would apply?

a)

An object at rest will remain at rest

b)

For every action there is an equal and opposite reaction

c)

the more mass an object has the more force will be required to make it accelerate

59.

If I leave my good thermal insulated cup on the top of my car and then suddently stop my car the cup will continue to move forward and off the car. Which law explains this motion?

a)

A body in motion tends to stay in motion unless acted upon by an outside force

b)

For every action there is an equal and opposite reaction

c)

Energy can not be created nor destroyed

60.

True or False: Acceleration is a change in velocity.

a)

True

b)

False

61.

True or False: Speed is velocity and direction.

a)

True

b)

False

62.

Box A has a mass of 23 kg, and box B has a mass of 100 kg. If both boxes are on a wagon and it suddenly stops, which box will move a greater distance?

a)

Box A, because it has less mass

b)

Box B, because it has more mass

63.

When calculating Net Force and the arrows are going the same direction are you going to add or subtract the forces?

a)

Add

b)

Subtract

64.

Which unit of measurment do we use to show acceleration?

a)

m/s

b)

m/s2

65.

What do you need to determine velocity of an object?

a)

the speed (distance divided by time) and direction

b)

how long an object was stationary

c)

how many times an object stopped

d)

the mass

66.

What is the net force of the image above?

a)

25 N

b)

50 N

c)

100 N

67.

How many Oxygen atoms are in H2O?

a)

1

b)

2

c)

0

d)

4

68.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
69.

How many atoms are there TOTAL in H2SO4 ?

a)

6

b)

5

c)

7

d)

3

70.

What is C2H8O ?

a)

Element

b)

Letters

c)

Mixture

d)

Compound

71.

How many atoms of Hydrogen are in this compound?

a)

1

b)

2

c)

3

d)

4

72.
Which of the following is a compound?
a)
Co
b)
O2
c)
C
d)
CO2
73.

How many Aluminum atoms are in Al2O3?

a)

3

b)

2

c)

5

d)

1

74.

How many total atoms are in Al2O3?

a)

3

b)

2

c)

5

d)

1

75.

How many elements are present in this compound? (Careful!)

Mg2As3COHNi2

a)

2

b)

4

c)

6

d)

10

76.

A compound is made up of

a)

only one element

b)

two more more elements bonded together

c)

two or more elements mixed together

77.

A molecule of O2 is

a)

only one element

b)

two more more elements bonded together

c)

two or more elements mixed together

78.

Mg(SO4)2 Using this formula which of the below are correct?

a)

It is a compound because it is made of two or more elements

b)

One element used is Silicone

c)

It has 2 Magnesium atoms

d)

It only has 1 Magnesium atom

79.

CaCO3 is a

a)

element

b)

mixture

c)

compound

80.

Which of the following are made of only one type of atom? Choose 2

a)

H2O

b)

NaCl

c)

O2

d)

Au

81.

Select the following that are compounds

a)

C

b)

SO2

c)

CaCO2

d)

Fe2O3

82.

Select the following that represent only elements

a)

Ne

b)

O3

c)

H2O

d)

N2

e)

NH3

83.

Match the element to the number of atoms in Ca(NO3)2

a)

Calcium

1.

1 atom

b)

Nitrogen

2.

2 atoms

c)

Oxygen

3.

6 atoms

84.

CH3COOH

Using the formula above which of the following statements is correct, click all that apply

a)

There are 4 hydrogen atoms

b)

There are 2 carbon atoms

c)

There are 4 carbon atoms

d)

There are 3 elements

e)

There are 6 elements

85.

Cl is the element symbol for

a)

Krypton

b)

Cooper

c)

Chlorine

86.

CO3 is composed of

(click all that apply)

a)

One Carbon atom

b)

One Oxygen atom

c)

3 Carbon atoms

d)

3 Oxygen atoms

87.

How many elements are in C3H7NO2

a)

3

b)

4

c)

13

d)

15

88.

How many atoms are in C3H7NO2

a)

3

b)

4

c)

13

d)

15

89.

How many nitrogen atoms are there in (NO)2OH?

a)

1

b)

2

c)

3

d)

4

90.

Name the elements in the reactants of the following formula:

NaOH + HCl -----------> NaCl + H2O

sodium hydrogen sodium water ------->

hydroxide chloride chloride

a)

Sodium Hydroxide and Hydrogen Chloride

b)

Sodium Chloride and Water

c)

Sodium, Chlorine and Water

91.

The compound Mg(OH)2 is composed of :

a)

2 atoms of magnesium, 2 atoms of oxygen, and 2 atoms of Hydrogen

b)

1 atom of magnesium, 2 atoms of oxygen, and 2 atoms of hydrogen

c)

2 molecues of magnesium, and 2 molecules of oxygen

d)

1 molecules of magnesium and 2 molecules of oxygen

92.

Which of the following is an element and can not be broken down into other chemicals?

a)

NaCl

b)

Na

c)

CaSO4

93.

Matter can not be created or destroyed is the law of __________.

a)

Plate Tectonics

b)

Conservation of Mass

c)

Dynamic Theroy

94.

What happens to the mass of the reactants in the following chemical equation?

H2O + CO2 ---> H2CO3

a)

The mass stays the same

b)

There is less mass of oxygen in the product

c)

There is more hydrogen in the product

95.

If the reactant side has a total mass of 40g, then according to the law of conservation of mass how much should be on the product side of a chemical formula?

a)

4 g

b)

10 g

c)

20 g

d)

40 g

96.

When looking at a distance/time graph if there is a flat line the motion is

a)

not moving, at rest

b)

moving at a constant speed

c)

accelerating

97.
What is the speed of a car that travels 400 m in 20 minutes?
a)
20 miles/hr
b)
20 m/min
c)
800 m/min
d)
200 miles/hr
98.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
99.

A battery powered car is guided through an obstacle course. The graph shows how the car traveled over a period of time.


Between which two points was the speed of the car the fastest?

a)

P and Q

b)

Q and R

c)

R and S

d)

S and T

100.

What is this line of this graph showing?

a)

moving away from starting point at a constant speed

b)

moving back towards the starting point at a constant speed

c)

acceleration (getting faster)

d)

deceleration (getting slower)

101.
Which graph is showing acceleration (getting faster)
a)
D
b)
E
c)
both D and E
d)
neither D or E
102.

In the graph above, which one would have the greatest amount of force applied? Use F=ma to determine the forces.

a)

A

b)

B

c)

C

d)

D

103.

In order to determine the average speed from a graph what do you need to do?

a)

Divide the total distance by the total time

b)

Multiply the total distance and time

104.

When looking at a motion graph, the steeper the slope of the line the faster it is going.

a)

True

b)

False

105.

When looking at a distance over time motion graph if you have a straight diagonal line, what is the motion?

a)

No motion

b)

Constant speed

c)

accelerating

106.

Bob is running a 5000 m race and completes the race in 10 minutes, Steven is running another race at 100 m and completes it in 10 minutes. Who runs faster?

a)

Bob

b)

Steve

107.

If given mass and acceleration, how would you find the force of an object?

a)

Multiply

b)

Divide

c)

Add

d)

Subtract

108.

Which of the following are true about speed? Select TWO

a)

Distance divided by time

b)

shows how fast something is going

c)

shows the direction something is going

d)

Gives the acceleration of an object

109.

Bob has a 10 kg box and it accelerates at 10m/s2. What is the force applied to the box? Use F=ma

a)

10 N

b)

100 N

c)

1000 N

110.

What does a steep diagonal straight line indicate on a motion graph?

a)

The object is accelerating

b)

The object is stationary

c)

The object is going fast at a constant speed

d)

The object is slowing down

(negative acceleration)

111.
What is the speed of a car that travels 400 m in 20 minutes?
a)
20 miles/hr
b)
20 m/min
c)
800 m/min
d)
200 miles/hr
112.

Which of the following are pure substances? Pick 2

a)

element

b)

homogeneous mixture

c)

compound

d)

heterogeneous mixture

113.

In Saltwater you have NaCl (salt) and H20 (water) mixed together. Match the following with the correct vocabulary word.

a)

NaCl

1.

Solute

b)

H20

2.

Solvent

c)

Saltwater

3.

Solution

114.

What could you do to the pitchers to make them more diluted?

a)

add more water

b)

add more mix

115.

What could you do to the pitchers to make them more concentrated?

a)

add more mix

b)

add more water

116.

In the image, water was added to beaker B and the color is lighter. Which vocabulary word best describes what has happened to the solution?

a)

concentrated

b)

diluted

c)

evaporated

117.

In the image, a solute was added to beaker A has a darker color. Which vocabulary word best describes what has happened to the solution?

a)

concentrated

b)

diluted

c)

evaporated

118.

Which of the following would speed up the rate of dissolution of a solute being added to water? Select 3

a)

Agitating it

b)

heat it up, increasing temperature

c)

crushing it into smaller pieces

d)

using larger pieces

119.

Match the word with the definition

a)

distance

1.

the total length traveled by an object

b)

speed

2.

distance divided by time

c)

velocity

3.

Includes speed and direction

120.

Why do some bugs appear to walk on water?

a)

Surface Tension

b)

They have more mass than the water

c)

Their feet act like suction cups on the water

121.

If the number of atoms of each element in the reactant are the same in the product of a chemical formula then the law of conservation of mass is followed.

a)

True

b)

False

122.

A heavier box is harder to move than a lighter box. Which of Newton's Laws is this referencing?

a)

First Law of Inertia

b)

Second Law of Force and Acceleration

c)

Third Law of Action-Reaction

123.

The computer will stay on the table until the student uses a force to move it. Which of Newton's Laws is this referencing?

a)

First Law of Inertia

b)

Second Law of Force and Acceleration

c)

Third Law of Action-Reaction

124.

A swimmer moves forward as he pushes the water back with his arms. Which of Newton's Laws is this referencing?

a)

First Law of Inertia

b)

Second Law of Force and Acceleration

c)

Third Law of Action-Reaction

125.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
126.
A solution with a pH of 3.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
127.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
128.

If a liquid is heated what happens to the kinetic energy?

a)

As it heats up the molecules will slow down decreasing the kinetic energy

b)

As it heats up the molecules will speed up increasing the kinetic energy

129.

In a glass of ice water, thermal energy from the water moves towards the ice causing it to melt.

a)

True

b)

False

130.

In the winter the heater will run and eventually turn off when the house has reached

a)

Thermal Equilibrium

b)

Status Quo

c)

Conservation of Mass

131.

What is the average speed of the object from 0-6 seconds?

a)

1.67 m/s

b)

1 m/s

c)

100 m/s

132.

What is the average speed of the object for the entire trip?

a)

1.67 m/s

b)

1 m/s

c)

100 m/s

133.

constant speed equals

a)

balanced forces

b)

unbalanced forces

134.

In a closed experiment the mass of the reactant will be the same as the product because nothing is created or destroyed.

a)

true

b)

false

135.

If an object changes it speed or direction it is accelerating and it is

a)

balanced

b)

unbalanced

136.

A large cube of sugar will dissolve faster than the same amount of regular granulated/crushed sugar.

a)

True

b)

False

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