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Distance-Time Graphs

Total questions: 34

Worksheet time: 58mins

Name
Class
Date
1.

What is acceleration?

a)

an increase in speed

b)

a decrease in speed

c)

a change in direction

d)

all of these are examples

2.

Describe the object's motion from B to C:

a)

Speeding Up

b)

Slowing Down

c)

Constant Speed

d)

Not Moving

3.

Describe the object's motion from D to E:

a)

Speeding Up

b)

Slowing Down

c)

Constant Speed

d)

Not Moving

4.
Which runner won the race?
a)
A
b)
B
c)
C
5.
What is happening at E?
a)
The object is not moving
b)
Decelerating
c)
Slower steady speed; moving away from the starting position
d)
Steady speed; returning to start position
6.

Match the description to the graph:

"The car is stopped."

a)
b)
c)
d)
7.

Match the description to the graph:

"The speed of the car is decreasing."

a)
b)
c)
d)
8.

Match the description to the graph:

"The car is coming back."

a)
b)
c)
d)
9.
Which is an example of VELOCITY?
a)
A dog running at 3 m/s
b)
A deer sprinting at 4 m/s
c)
A migrating bird headed south for the winter at 3 m/s
d)
A person not moving at all
10.
Which is an example of SPEED?
a)
5 SECONDS
b)
2 METERS PER SECOND
c)
4 METERS
d)
1 HOUR
11.
a)
Object not moving
b)
Object accelerating
c)
Object slowing down
d)
Object staying at a constant speed
12.
a)
Object not moving
b)
Object accelerating
c)
Object slowing down
d)
Object at a constant speed
13.
a)
Green object is faster than Red
b)
Red object is faster than Green
c)
Green object is slower than Red
d)
Red object is 2 times faster than Green
14.
a)
Net force is 50N to the right
b)
Net force is 500N to the right
c)
Net force is 50N to the left
d)
Net force is 500N to the left
15.

How many atoms in all are in a molecule of serotonin?

C10H12N2O

a)
22
b)
24
c)
25
d)
4
16.
Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns?
a)
The shape of the coal changes
b)
Oxygen is present
c)
A new substance is produced
d)
Coal is made up of more than one element
17.
When materials combine to form new compounds it is a chemical change. Which example is a chemical change?
a)
baking powder fizzing
b)
water boiling
c)
ice melting
d)
sugar cube dissolving
18.

Which is the name of the kind of solid substance formed in this figure?

a)

color change

b)

precipitate

c)

acid

d)

chemicals

19.
Which of the following is an example that includes evidence of a chemical reaction?
a)
A sample of zinc is placed in water and it settles to the bottom
b)
A solid block of ice is heated and it completely melts into a liquid. 
c)
Sugar that is burned gives off an odor and turns brown and then black.
d)
A tomato is placed into a blender and chopped up into smaller pieces.
20.
You know you a chemical reaction has occurred if 
a)
there is a precipitate.
b)
there is a color change.
c)
there is a temperature change.
d)
All of these answers are evidence.
21.
Which of the following is a compound?
a)
Ca
b)
Pb
c)
H2
d)
MgBr
22.
Which of the following is an element?
a)
FeO
b)
O2
c)
NaOH
d)
SiO2
23.
How many elements are in the compound C2H8O ?
a)
2
b)
1
c)
3
d)
0
24.
How many total atoms are in the compound H2SO4?
a)
6
b)
5
c)
7
d)
3
25.
How many Sodium atoms are in the compound 6NaCl?
a)
1
b)
12
c)
6
d)
4
26.
According to the Law of Conservation of Mass, –
a)
matter is not created or destroyed in a chemical reaction.
b)
matter is always created in a chemical reaction.
c)
matter is always destroyed in a chemical reaction.
d)
matter is created and then destroyed in a chemical reaction.
27.

Which of the following examples shows that a chemical reaction has occurred?

a)

A rock breaks into smaller pieces when it is struck with a hammer.

b)

Bubbles form when baking soda is added to vinegar and mixed.

c)

A cup of water turns pink when a few drops of red food coloring are added.

d)

A solid is formed when heat is removed from a sample of water.

28.

Evidence of a chemical reaction includes anything that shows -

a)

a new substance has been formed

b)

a solid has dissolved in a liquid.

c)

an interaction between two gases.

d)

a change in the state of matter.

29.

A clear liquid from a flask is poured into another clear liquid in a beaker. Which of the following results of this procedure would indicate a new substance was formed?

a)

The level of the substance in the beaker is higher after the other liquid is added.

b)

A yellow solid forms and then settles to the bottom of the beaker.

c)

Small white crystals are left behind in the flask that held the first liquid.

d)

The mass of the combined liquids is greater than either original liquid.

30.

In air, phosphorous, a white solid, spontaneously reacts to produce a pale, green light. Why might the green light be evidence of a chemical reaction?

a)

Green is a color associated with reactions.

b)

Phosphorous is a solid at room temperature.

c)

The reaction will not occur in a closed container.

d)

It indicates a change in temperature.

31.
A scientist performed four investigations using eight different liquids. In each investigation, the scientist combined two of the liquids and recorded observations. In which investigation is it LEAST likely that the liquids reacted chemically?
a)
1
b)
2
c)
3
d)
4
32.
Four students performed four different investigations by combining different substances. Their results are shown in the table provided. In which experiment are new substances being formed?
a)
Experiment 1
b)
Experiment 2
c)
Experiment 3
d)
Experiment 4
33.

Which of the models of a chemical reaction best represents the Law of Conservation of Mass?

a)

A

b)

B

c)

C

d)

D

34.
In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams should reactant B have? 
a)
4g
b)
5g
c)
9g
d)
14g

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