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Worksheets

Review - 10/1 - 10/3

Total questions: 216

Worksheet time: 5hrs 46mins

Name
Class
Date
1.

Which of the following is a lab safety rule?

a)

Eat food in the lab

b)

Wear safety goggles

c)

Mix chemicals with bare hands

d)

Ignore spills

2.

What is the main difference between speed and velocity?

a)

Speed has direction, velocity does not

b)

Velocity has direction, speed does not

c)

Both have direction

d)

Neither has direction

3.

Which state of matter has a definite shape and volume?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

4.

What is the process called when a solute dissolves in a solvent?

a)

Evaporation

b)

Dissolution

c)

Condensation

d)

Filtration

5.

How many oxygen atoms are in one molecule of CO 2_2 ?

a)

1

b)

2

c)

3

d)

0

6.

Which of the following is a chemical change?

a)

Boiling water

b)

Dissolving sugar in water

c)

Burning paper

d)

Freezing juice

7.

What should you do if a chemical spills on your skin in the lab?

a)

Ignore it

b)

Wash immediately with water

c)

Cover it with a cloth

d)

Smell it

8.

Which of the following best describes a solution?

a)

A mixture where substances are evenly distributed

b)

A solid with a definite shape

c)

A gas with no volume

d)

A liquid that cannot dissolve anything

9.

If you have the compound NaCl, how many sodium atoms are present in one molecule?

a)

1

b)

2

c)

3

d)

4

10.

Which of the following is NOT a state of matter?

a)

Solid

b)

Liquid

c)

Plasma

d)

Energy

11.

Which of the following is an example of dissolution?

a)

Sugar disappearing in tea

b)

Ice melting in the sun

c)

Water boiling

d)

Iron rusting

12.

Which of the following is the correct formula for counting the total number of atoms in H 2_2 SO 4_4 ?

a)

2

b)

4

c)

7

d)

6

13.

Which of the following is the best example of velocity?

a)

60 km/h

b)

60 km/h north

c)

60

d)

60 km

14.

Which of the following changes is reversible?

a)

Burning a candle

b)

Melting chocolate

c)

Cooking an egg

d)

Rusting iron

15.

If you have 3 molecules of H 2_2 O, how many hydrogen atoms do you have in total?

a)

3

b)

6

c)

9

d)

12

16.

Why is it important to tie back long hair during a lab experiment?

a)

To look neat

b)

To prevent hair from catching fire or contaminating chemicals

c)

To avoid getting hair wet

d)

To follow fashion

17.

A student measures the speed of a car as 50 km/h. What additional information is needed to determine the car's velocity?

a)

The color of the car

b)

The direction of motion

c)

The weight of the car

d)

The time of day

18.

Which of the following will increase the rate at which a solute dissolves in a solvent?

a)

Decreasing temperature

b)

Stirring the solution

c)

Using larger solute pieces

d)

Not mixing at all

19.

How many atoms are in one molecule of C 6_6 H 12_{12} O 6_6 ?

a)

24

b)

12

c)

18

d)

6

20.

Which of the following best explains why dissolving salt in water is a physical change?

a)

The salt changes into a new substance

b)

The salt and water can be separated by evaporation

c)

The salt burns in water

d)

The water changes color

21.

A student observes that a chemical reaction produces bubbles and heat. What type of change is this most likely to be?

a)

Physical change

b)

Chemical change

c)

No change

d)

Dissolution

22.

If you mix 10 g of sugar in 100 mL of water and all the sugar dissolves, what can you say about the solution?

a)

It is saturated

b)

It is unsaturated

c)

It is a solid

d)

It is a gas

23.

A student is given the formula Al 2_2 (SO 4_4 ) 3_3 . How many oxygen atoms are present in one formula unit?

a)

4

b)

7

c)

12

d)

6

24.

A student notices that when baking soda is added to vinegar, bubbles form and the temperature drops. Explain what type of change is occurring and why.

a)

Physical change, because only bubbles form

b)

Chemical change, because new substances and energy change are observed

c)

Physical change, because temperature drops

d)

No change, because nothing new is formed

25.

You are given a mixture of sand and salt. Describe a safe procedure to separate the two substances in a laboratory setting.

a)

Use a magnet to remove both

b)

Dissolve in water, filter out sand, evaporate water to get salt

c)

Burn the mixture

d)

Add oil to separate them

26.

A student records the following data: A car travels 120 km north in 2 hours. Calculate the velocity of the car.

a)

60 km/h north

b)

60 km/h

c)

120 km/h north

d)

240 km/h

27.

Explain why it is important to never return unused chemicals to their original containers in a laboratory.

a)

It saves time

b)

It prevents contamination of the chemicals

c)

It makes the chemicals stronger

d)

It is easier to clean up

28.

A student wants to dissolve more sugar in water but finds that no more will dissolve at room temperature. What can the student do to increase the amount of sugar that dissolves?

a)

Cool the water

b)

Heat the water

c)

Add salt

d)

Stop stirring

29.

How many atoms of Hydrogen are in H2O

a)

1

b)

2

c)

3

d)

more than 3

30.

How many different elements are present in H2COCH2

a)

5

b)

4

c)

3

d)

2

31.

Calculate the number of Oxygen atoms in Al(OH)3

a)

1

b)

2

c)

3

d)

4

32.

The ______ are numbers found on the lower right-hand side of an element symbol.

a)

Coefficient

b)

Exponent

c)

Multiplier

d)

Subscript

33.

Coefficients in chemical formulas...

a)

Multiply just the first atom

b)

Add to the subscripts at the end of the molecule

c)

Multiply elements without subscripts

d)

Multiply EVERYTHING!

34.

4CF2Cl2

a)

C = 4, F = 4, Cl = 2

b)

C = 1, F = 8, Cl = 8

c)

C = 4, F = 8, Cl = 8

d)

C = 1, F = 4, Cl = 8

35.

C3H5(NO3)3

a)

C = 3, H = 5, N = 3, O = 9

b)

C = 3, H = 5, N = 1, O = 9

c)

C = 9, H = 15, N = 3, O = 9

d)

C = 9, H = 15, N = 1, O = 3

36.

H2SO4

a)

H = 2, S = 4, O = 4

b)

H = 2, S = 1, O = 4

c)

H = 8, S = 4, O = 4

d)

H = 2, SO = 4

37.

How many different elements are present in this molecule?

3 NH4C2H3O2

a)

15

b)

36

c)

5

d)

4

38.

A ______ is a number written in front of a chemical formula.

a)

Coefficient

b)

Subscript

c)

Exponent

d)

Coordinator

39.

How many atoms of Hydrogen are in H2O

a)

1

b)

2

c)

3

d)

more than 3

40.

How many different elements are present in H2COCH2

a)

5

b)

4

c)

3

d)

2

41.

Calculate the number of Oxygen atoms in Al(OH)3

a)

1

b)

2

c)

3

d)

4

42.

Calculate the number of Oxygen atoms in Al(OH)3

a)

1

b)

2

c)

3

d)

4

43.

The ______ are numbers found on the lower right-hand side of an element symbol.

a)

Coefficient

b)

Exponent

c)

Multiplier

d)

Subscript

44.

C3H5(NO3)3

a)

C = 3, H = 5, N = 3, O = 9

b)

C = 3, H = 5, N = 1, O = 9

c)

C = 9, H = 15, N = 3, O = 9

d)

C = 9, H = 15, N = 1, O = 3

45.

4CF2Cl2

a)

C = 4, F = 4, Cl = 2

b)

C = 1, F = 8, Cl = 8

c)

C = 4, F = 8, Cl = 8

d)

C = 1, F = 4, Cl = 8

46.

H2SO4

a)

H = 2, S = 4, O = 4

b)

H = 2, S = 1, O = 4

c)

H = 8, S = 4, O = 4

d)

H = 2, SO = 4

47.

How many different elements are present in this molecule?

3 NH4C2H3O2

a)

15

b)

36

c)

5

d)

4

48.
Number of N in (NH₄)₂CrO₄
a)
1
b)
2
c)
8
d)
16
49.
A subscript is the small number below a(n) ________ that tells the number of _______ of that element.
a)
element symbol; atoms
b)
atom; element symbol
c)
subscript; protons
d)
compound; elements
50.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
51.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
52.
Number of H in 3(NH₄)₂CrO₄
a)
4
b)
2
c)
8
d)
24
53.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
54.

How many Sodium atoms are in 6NaCl?

a)

1

b)

12

c)

6

55.

How many atoms are there TOTAL in H2SO4 ?

a)

6

b)

5

c)

7

d)

3

56.

How many CARBONs are in this formula?

a)

1

b)

4

c)

8

d)

12

57.

How many total POTASSIUM atoms are in this formula?

a)

8

b)

2

c)

4

d)

12

58.

How many CARBON are in this formula?

a)

5

b)

2

c)

10

d)

20

59.

How many chlorine atoms are in NaClO4 ?

a)

1

b)

2

c)

4

60.

What elements are represented in this chemical formula? Fe2O3Fe_2O_3  

a)

Iron, Oxygen

b)

Francium, Europium, Oxygen

c)

Ferrium, Oxygen

d)

Berylium, Oxygen

61.

What is the total number of atoms in this formula? H2O2H_2O_2  

a)

2

b)

4

c)

3

62.
How many total atoms are in this compound?
H2C3O4N5
a)
5
b)
14
c)
15
d)
19
63.
How many elements are present in this compound? (Careful!)
Mg2As3COHNi2
a)
2
b)
4
c)
6
d)
10
64.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
65.

How many total atoms in the following equation?

ClN6Fe2

a)

6

b)

8

c)

10

d)

9

66.

The coefficient in 3H2O is:

a)

6

b)

5

c)

3

d)

2

67.

How man atoms of carbon are there?

a)

1

b)

2

c)

3

d)

4

68.

How many atoms of Iron are in this compound?

a)

1

b)

2

c)

3

d)

4

69.

How many atoms of hydrogen are in

C6H12O6

a)

6

b)

12

c)

18

d)

2

70.

A substance made up of atoms of two or more different elements joined by chemical bonds

a)

Molecule

b)

compound

c)

polar covalent bond

d)

nonpolar covalent bond

71.

How many different elements are present in H2COCH2

a)

5

b)

4

c)

3

d)

2

72.

Calculate the number of Oxygen atoms in Al(OH)3

a)

1

b)

2

c)

3

d)

4

73.

How many total POTASSIUM atoms are in this formula?

a)

8

b)

2

c)

4

d)

12

74.

How many elements are in this chemical formula? NaHCO3NaHCO_3  

a)

1

b)

2

c)

3

d)

4

75.

Coefficients in chemical formulas...

a)

Multiply just the first atom

b)

Add to the subscripts at the end of the molecule

c)

Multiply elements without subscripts

d)

Multiply EVERYTHING!

76.

C3H5(NO3)3

a)

C = 3, H = 5, N = 3, O = 9

b)

C = 3, H = 5, N = 1, O = 9

c)

C = 9, H = 15, N = 3, O = 9

d)

C = 9, H = 15, N = 1, O = 3

77.

How many atoms of Calcium are in this equation?

H3O5CaCl7

a)

3

b)

5

c)

1

d)

7

78.

How many atoms of Carbon are in this equation?


HʒC5O4

a)

3

b)

1

c)

5

d)

4

79.

How many total atoms in the following equation?

ClN6Fe2

a)

6

b)

8

c)

10

d)

9

80.

Identify the Coefficient.

3BeH5Si8

a)

5

b)

3

c)

1

d)

8

81.

Identify the subscripts.

4Fe5K2

a)

4

b)

5

c)

2

d)

1

82.

How many atoms of Iron in the following equation?

2HFe5Cl

a)

1

b)

10

c)

5

d)

20

83.

How many total atoms in the following equation?

3He2Ag5

a)

2

b)

21

c)

24

d)

5

84.

How many atoms of Hydrogen are in this equation?

5Cl2H5

a)

10

b)

2

c)

5

d)

25

85.

How many atoms of Iron in the following equation?

C2HAu5

a)

2

b)

0

c)

9

d)

7

86.

How many total atoms in the following equation?

2(H2)3

a)

2

b)

6

c)

7

d)

12

87.

When water in an open pan is heated for a long time, it becomes...

a)

a solid

b)

a vacuum

c)

a gas

d)

dew

88.

Which of the following is an example of MELTING?

a)

stirring some sugar in water until you can't see the sugar

b)

heating a pan of water until the water is all gone

c)

heating a block of ice until the ice turns to water

d)

cooling water in the freezer until the water becomes solid

89.

Iron is most likely to rust when it is

a)

damp

b)

dry

c)

painted

d)

covered with grease

90.

Vinegar is an acid that bubble when it interacts with calcite.  Which mineral contains calcite? (Use the table below to answer.)

a)

limestone

b)

sandstone

c)

granite

d)

gneiss

91.

Mark is observing a burning candle.  He notices that the candle wax makes a pool and dribbles down the side of the candle, where it hardens again.  The wax has undergone:

a)

a physical change

b)

a chemical change

c)

a physical and chemical change

d)

the formation of a new substance

92.

A different chemical substance is formed when

a)

a cloth is cut

b)

a cup breaks

c)

a candle burns

d)

a piece of chalk falls apart

93.

Which object would be most likely to rust?

a)

an iron nail

b)

a plastic comb

c)

a glass marble

d)

a paper cup

94.

David added a little baking soda to a beaker that contained vinegar.  Bubbles started coming from the mixture and a gas was released.  The gas was evidence that:

a)

the mixture was starting to boil.

b)

the air in the flask contracted.

c)

the vinegar and baking soda expanded.

d)

a chemical reaction took place.

95.

An example of a liquid turning into a gas is:

a)

a chocolate bar melting

b)

steam escaping from a cup of hot chocolate

c)

an ice cream cone dripping

d)

a stick of butter getting warm

96.

If you dissolved a lot of salt in some water in a large, flat dish and put the dish in bright sunlight on a hot day, what would be left in the dish after a long time?

a)

dry salt

b)

water with no salt

c)

the same salty water as before

d)

nothing

97.

A Chemical Change is one that

a)

Changes the molecules of the matter

b)

Does not change the molecules of the matter

98.

A change in the state of matter is an indicator of a:

a)

Chemical Change

b)

Physical Change

99.

Cutting paper would be a physical change because:

a)

Cutting Changes the molecules of the paper

b)

cutting only change the size and shape of the paper

c)

A new substance was produced by cutting

100.

Burning wood is an example of:

a)

Chemical Change

b)

Physical Change

101.

Boiling water and it turning into steam is an example of:

a)

Chemical Change

b)

Physical Change

102.

Roasting a marshmallow (turning black, bubbling, smoking) is an example of a:

a)

Chemical Change

b)

Physical Change

103.

Rust forming on a can after being left outside is an example of a chemical change because: (choose all that apply)

a)

The color changed

b)

Rust is a new solid that formed

c)

The can feels different

d)

Rust is a new gas that formed

104.

Mixing Vinegar and Milk is a chemical change because:

a)

A gas was formed with bubbling

b)

A solid was formed from two liquids

c)

The color changed

d)

The temperature changed

105.

An explosion is an example of a:

a)

Chemical Change

b)

Physical Change

106.

When two substances physically mix together this is:

a)

Chemical Change

b)

Physical Change

107.
Ice melting
a)
Chemical Change
b)
Physical Change
108.
Cake batter baked in an oven
a)
Chemical Change
b)
Physical Change
109.
Baking soda and vinegar combine to make carbon dioxide
a)
Chemical Change
b)
Physical Change
110.

Which of the following is a physical change?

a)

Ice melting

b)

Baking potatoes

c)

Rusty nail

d)

Rotting wood

111.

Which change creates a NEW substance?

a)

Physical change

b)

Chemical Change

112.
A copper penny turning greenish after a few years is an example of ...
a)
Chemical Change
b)
Physical Change
113.

The formation of a solid when two liquids combine is called?

a)

Solidification

b)

Freezing

c)

Precipitate

d)

Solubility

114.

Identify what type of change happening in the picture below...

a)

Chemical Reaction

b)

Physical Change

c)

Change in State

d)

Change in appearance only

115.

When a new substance is formed with different properties than the original substance it is called a...

a)

Chemical change

b)

Physical change

c)

Change in State

d)

Change in appearance only.

116.
What is the formula to calculate speed?
a)
S = t/d
b)
S = d/t
c)
S = d x t
d)
S = t x d
117.
What is speed?
a)
how far you go
b)
how much distance is covered over a period of time
c)
how fast you accelerate
d)
the change in the location of a object
118.
A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?
a)
10 m/s
b)
1000 m/s
c)
100 seconds
d)
10 seconds
119.
Total distance divided by total time is
a)
average speed
b)
constant speed
c)
instantaneous speed
d)
acceleration
120.
Alan travels 100 km in 5hrs. Find his average speed in km/h
a)
5km/hr
b)
10km/hr
c)
50km/hr
d)
20km/hr
121.
Find speed when distance is 142 km and time is 2 hours.
a)
71km/hr
b)
52km/hr
c)
17km/hr
d)
90km/hr
122.
What is the speed of an object that travels 60 meters in 4 seconds?
a)
240 m/s
b)
15 m/s
c)
0.067 m/s
d)
15 mph
123.
What two measurements are necessary for calculating speed?
a)
Mass and time
b)
Temperature and mass
c)
Mass and distance
d)
Distance and time
124.

A worm traveled 3 miles in 30 minutes.  What is the average speed of the worm in miles per hour?

a)

10 mi/h

b)

6 mi/h

c)

33 mi/h

d)

3 mi/h

125.
Which of the following is a unit of speed?
a)

km/h

b)

h

c)
km
d)
s
126.
A bus travels 20 km in 30 minutes. What is the average speed of the bus?
a)
20 km/h
b)
30 km/h
c)
40 km/h
d)
50 km/h
127.
A person walked 10 miles.  It took them 2 hours.  How fast were they walking?
a)
8 mph
b)
5 mph
c)
2 mph
d)
10 mph
128.

How fast is a monkey running if it takes him 30 minutes to travel 240 meters?

a)

80 m/min

b)

18 m/min

c)

8 m/min

d)

8 m/s

129.

You arrive in my class 45 seconds after leaving math which is 90 meters away. How fast did you travel?

a)

2 m/s

b)

20 m/s

c)

2 mph

d)

0.5 m/2

130.

Time can be measured in...

a)

how far an object moves

b)

seconds, minutes, hours, etc

c)

the rate at which velocity changes (speeds up)

d)

an object's change in position relative to a reference point

131.

Time is...

a)

how fast an object is moving

b)

how far the object has moved

c)

how long it took the object to travel the distance

132.

Distance is...

a)

how fast an object is moving

b)

how far the object has moved

c)

how long it took the object to travel the distance

133.
Can be measured in meters per second (m/s)
a)
Distance
b)
Time
c)
Speed
d)
Acceleration
134.
Find speed when distance is 142 km and time is 2 hours.
a)
71km/hr
b)
52km/hr
c)
17km/hr
d)
90km/hr
135.

Cesar drove from Houston to Dallas in 4 hours. Dallas is roughly 250 miles NW of Houston. What was his average speed?

a)

1000 mph

b)

62.5 mph

c)

55 mph

d)

60 mph

136.

Xavier runs during gym class. He runs 100 meters in 10 seconds. What is his speed in meters per second?

a)

15 m/s

b)

10 m/s

c)

5 m/s

d)

12 m/s

137.

In a Fall Trip, the 6th grade students drove to Austin, which is 180 miles away. It takes them 3 hours to get there. What was the bus's speed in miles per hour?

a)

60 mph

b)

50 mph

c)

30 mph

d)

55 mph

138.

Beyonce hits a volleyball to Cardi. The ball travels 16 meters in 8 seconds. What is the speed of the ball in meters per seconds?

a)

3 m/s

b)

5 m/s

c)

2 m/s

d)

4 m/s

139.

You need to get to science class in 90 seconds after leaving Ms. William's class, which is 45 meters away. In order not to be tardy, how fast do you need to travel to make it on time in meters per seconds? (HINT: double check your placement in the formula for this problem)

a)

5 m/s

b)

0.5 m/s

c)

0.2 m/s

d)

10 m/s

140.

Jay-Z is driving a remote control car down the hallway. The car goes 60 meters in 15 seconds. What is the car’s speed in meters per second?

a)

3 ms

b)

6 m/s

c)

5 m/s

d)

4 m/s

141.

Pancho runs the first 1600 meters of a race in 200 seconds. What is his speed in meters per second?

a)

5 m/s

b)

9 m/s

c)

8 m/s

d)

10 m/s

142.

Who wore it best?

a)

Neither, he needs to go shopping

b)

The cup

c)

The boy

d)

I'd wear that!

143.

Drake rides his skateboard 1500 meters in 15 minutes. How fast did Drake go in his skateboard in meters per minute?

a)

110 m/m

b)

120 m/m

c)

50 m/m

d)

100 m/m

144.

A comet travels 30,000 kilometers in 15 minutes. What is the speed of the comet in kilometers per minute?

a)

2,200 km/m

b)

1,000 km/m

c)

2,000 km/m

d)

1,800 km/m

145.

If Obama throws the football 55 meters in 5 seconds, what is the average speed of the football in meters per second?

a)

11 m/s

b)

10 m/s

c)

8 m/s

d)

12 m/s

146.

What is the best food?

a)

Pizza

b)

Nachos

c)

Wings

d)

Burger

147.

Ms. H rides her unicorn to the mall. The mall is 2400 meters from her home and it takes her 12 minutes to get to the mall. What is Ms. H's average speed in meters per minute?

a)

200 m/m

b)

150 m/m

c)

220 m/m

d)

250 m/m

148.

Picasso (Ms.H's dog) runs after a ball that is 45 meters away. It takes him 9 seconds to reach the ball. How fast is Picasso running?

a)

4 m/s

b)

3 m/s

c)

5 m/s

d)

6 m/s

149.

How fast is uncle Billy running if it takes him 30 minutes to travel 240 meters?

a)

10 m/m

b)

6 m/m

c)

8 m/m

d)

5 m/m

150.

The formula d/t is used for calculating ______________ and _________________.

a)

Speed and velocity

b)

Speed and acceleration

c)

speed and average speed

151.

What is the unit for speed? ____________

a)

m/s

b)

d/t

c)

m/s2

152.

Which of the following describes the velocity of an object?

________________

a)

50m/s

b)

50 m east

c)

50 m/s east

153.

What is the difference between velocity and speed of an object?

a)

Velocity is the change in distance over time, while speed is the velocity over time.

b)

Velocity has a direction associated with it while speed has no specific direction.

c)

Velocity is the change in speed over time, while speed is the change in distance over time.

154.

What is the formula for calculating average speed?

a)

Distance = speed divided by time

b)

average speed = total distance divided by total time

c)

velocity times speed = average speed

155.

Mr. Johnson is traveling from Sweeny, TX to San Antonio, TX. It takes 4 hours to make the 224 mile trip. What is his velocity.

a)

56 mph North or Northwest

b)

65 mph North

c)

56 mph North

d)

65 mph westnorth

156.

Change in distance over a specific amount of time (speed) plus direction.

a)

velocity

b)

speed

c)

acceleration

157.

What is the average speed of a person who walks 3 miles in 1 hour and then runs 3 miles in 30 minutes?

a)

4 mph

b)

5 mph

c)

6 mph

d)

7 mph

158.

Cesar drove from Houston to Dallas in 4 hours. Dallas is roughly 250 miles NW of Houston. What was his average speed?

a)

50 mph

b)

60 mph

c)

62.5 mph

d)

70 mph

159.

What is average speed?

a)

The total distance traveled divided by the total time taken.

b)

The speed at which an object moves in a straight line.

c)

The maximum speed reached by an object during its motion.

d)

The speed of an object at a specific moment in time.

160.

A person walked 10 miles. It took them 2 hours. How fast were they walking?

a)

3 mph

b)

4 mph

c)

5 mph

d)

6 mph

161.

If a car travels 150 miles in 3 hours, what is its average speed?

a)

40 mph

b)

50 mph

c)

60 mph

d)

70 mph

162.

If a train travels at a speed of 60 mph for 2 hours, how far does it travel?

a)

100 miles

b)

110 miles

c)

120 miles

d)

130 miles

163.

What is the average speed of a cyclist who travels 30 miles in 2 hours?

a)

10 mph

b)

12 mph

c)

15 mph

d)

20 mph

164.

What is the formula to calculate speed?

a)

S = d/t

b)

S = t/d

c)

S = d + t

d)

S = d - t

165.

If a car travels 150 miles in 3 hours, what is its average speed?

a)

40 mph

b)

50 mph

c)

60 mph

d)

70 mph

166.

What is the difference between speed and velocity?

a)

Speed is a vector quantity (magnitude and direction), while velocity is a scalar quantity (magnitude only).

b)

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

c)

Speed and velocity are the same; both are scalar quantities.

d)

Speed is a measure of distance, while velocity is a measure of time.

167.

What is the average speed of a cyclist who travels 30 miles in 2 hours?

a)

10 mph

b)

12 mph

c)

15 mph

d)

20 mph

168.
Element or compound?
H2O
a)
element
b)
compound
169.
Which of the following is a compound?
a)
Co
b)
O2
c)
C
d)
CO2
170.
Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
171.
The red numbers in the image below represent ________
a)
subscripts
b)
coefficients
c)
I don't know, and don't want to try
d)
None of the answers are correct
172.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
173.
Velocity is 
a)
speed
b)
direction
c)
speed with a direction
d)
none of the answers above
174.
Which of the following is a unit of speed?
a)
km/hr
b)
hr
c)
km
d)
s
175.
Find the velocity of a plane that traveled 3000 miles west in 5 hours.
a)
65 mph west
b)
6 mph west
c)
600 mph west
d)
6000 mph west 
176.
88 m/s north
a)
Speed
b)
Velocity
c)
Acceleration
177.
88 m/s
a)
Speed
b)
Velocity
c)
Acceleration
178.
How long would it take for you to swim across a lake that is 900 meters across if you swim at 1.5 m/sec?
a)
600 sec
b)
600 m/sec
c)
0.00167 sec
d)
0.00167 m/sec
179.
What is the speed of an object that travels 60 meters in 4 seconds?
a)
240 m/s
b)
15 m/s
c)
0.067 m/s
d)
15 mph
180.
Find the velocity of a truck that travels 75 miles north in 2.5 hours.
a)
187.5
b)
30
c)
300
d)
200
181.
Find the velocity of a plane that traveled 3000 miles west in 5 hours.
a)
60 mph
b)
6 mph
c)
600 mph
d)
6000 mph
182.
You walk 10 meters to math class in 20 seconds. Your average speed is
a)
2 m/s
b)
0.5 m/s
c)
200 m/s
d)
5 m/s
183.

What should you wear in science lab to be safe and protected from dangerous chemicals?

a)

Goggles

b)

Lab apron

c)

Closed toe shoes

d)

ALL OF THESE

184.

When finished working with hazardous chemicals, you should always:

a)

Treat your hands with some lotion

b)

Wash your hands with soap and water

c)

Wipe your hands on a towel only

d)

Wipe your hands on your clothes

185.

Long hair in the lab MUST be:

a)

Cut short

b)

Tied back

c)

Neatly brushed

d)

Held over a flame

186.

If you do not understand a direction, you should:

a)

Try several methods until something works

b)

Ask the teacher before proceeding

c)

Skip it and go onto the next part

d)

Mix chemicals randomly

187.

Horseplay and pranks are allowed in the science lab.

a)

TRUE

b)

FALSE

188.

It is okay to eat or drink in the science lab.

a)

TRUE

b)

FALSE

189.

I should wear goggles and gloves for lab safety.

a)

TRUE

b)

FALSE

190.

If glassware breaks, I should pick it up with my hands and throw it in the trashcan.

a)

TRUE

b)

FALSE

191.

If I cut or burn myself, I don't need to tell the teacher.

a)

TRUE

b)

FALSE

192.

What should you wear in the science lab to be safe? CHECK ALL THAT APPLY.

a)

Opened toe shoes

b)

Lab coat

c)

Apron

d)

Goggles

e)

Long earrings

193.

It is safe to chew gum in the science lab.

a)

TRUE

b)

FALSE

194.

Which of the graphs shows that one of runners started 10 yards further ahead of the

other?

a)
b)
c)
d)
195.

In which of the following graphs below are both runners moving at the same speed?

a)
b)
c)
d)
196.

Which of the graphs shows that one of runners started 10 yards further ahead of the

other?

a)
b)
c)
d)
197.

In which of the following graphs below are both runners moving at the same speed?

a)
b)
c)
d)
198.

Match the description to the graph:

"The car is stopped."

a)
b)
c)
d)
199.

Match the description to the graph:

"The car is traveling at a constant speed."

a)
b)
c)
d)
200.

Match the description to the graph:

"The car is coming back."

a)
b)
c)
d)
201.

Segment O-A The bus is _________________.

a)

at rest

b)

returning (to original position)

c)

moving forward

202.

Segment A-B The bus is _________________.

a)

at rest

b)

returning (to original position)

c)

moving forward

203.

Segment B-C The bus is _________________.

a)

at rest

b)

returning (to original position)

c)

moving forward

204.

Which runner won the race?

a)

Albert

b)

Bob

c)

Charlie

205.

How long did Charlie stop for a rest?

a)

2.5 seconds

b)

2 seconds

c)

3 seconds

d)

5 seconds

206.

How long did Bob take to complete the race?

a)

17 seconds

b)

12 seconds

c)

14 seconds

d)

15 seconds

207.

Which of the graphs shows that one of runners started in the same place?

a)
b)
c)
d)
208.

Which of the graphs shows that one of runners ended the race 10 yards ahead of the other?

a)
b)
c)
d)
209.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
210.
How long did it take this object to travel back to its reference/starting point?
a)
20 s
b)
30 s
c)
60 s
d)
100 s
211.
At 60 seconds, how far had this object traveled? 
a)
0 m
b)
10 m
c)
20 m
d)
40 m
212.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
213.
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
214.
What is happening at C?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Slower steady speed; moving away from the starting position
215.
Which runner had a head start?
a)
A
b)
B
c)
C
216.
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

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