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7R Final Review

Total questions: 127

Worksheet time: 3hrs 30mins

Name
Class
Date
1.

Which beaker contains molecules that are moving the SLOWEST ?

a)

Left beaker (Solid)

b)

Middle beaker (Liquid)

c)

Right beaker (Gas)

2.

Which beaker contains molecules that would expand to fill their container ?

a)

Left beaker (Solid)

b)

Middle beaker

c)

Right beaker

3.

Which beaker contains molecules that are close together and has a shape that changes ?

a)

Left beaker

b)

Middle beaker

c)

Right beaker

4.

A material is tested in the lab and found to react with vinegar and is flammable. These two properties would be considered....

a)

Chemical properties

b)

Physical properties

5.

Students collected data on four substances. If the same students were then given a mystery substance made of white crystals that DO NOT dissolve in water. Which of the following could it be ?

a)

Iron

b)

brown sugar

c)

Salt

d)

Corn Starch

6.

Matter is anything that has....

a)

mass and takes up space

b)

Mass ONLY

c)

energy

d)

volume ONLY

7.

Based on the data in the chart. Which two liquids could be the same ? (Write your answer in a CER format)

a)

1 and 2

b)

2 and 3

c)

3 and 4

8.
Which is an example of a physical property?
a)

Reacts with acid

b)

 color

c)

Is flammable

d)

Reacts with oxygen

9.
Which of the following is a chemical property of water?
a)

Reacts with sodium and calcium

b)

It's clear

c)

It's a liquid

d)

Has a density of 1

10.

Mr. Krieg is carrying an umbrella

a)

Observation

b)

Inference

11.

An unknown material has a mass of 57.2 grams and a volume of 52.1 cm3. What would this unknown substance be ?

a)

Cork

b)

Mercury

c)

Rubber

d)

Water

12.

Which of the following would measure the mass of an object ?

a)
b)
c)
d)
13.

What is volume ?

a)

the force of an object caused by gravity

b)

the amount of space something takes up

c)

the amount of matter in an object

d)

how fast something is moving

14.
What is mass?
a)
the force of an object caused by gravity
b)
the amount of space something takes up
c)
the amount of matter in an object
d)
how fast something is moving
15.

Which quantity would be used to identify an unknown material ?

a)

volume

b)

mass

c)

density

16.

Find the volume of this figure.

a)

15 cm3

b)

120 cm3

c)

50 cm3

d)

54 cm3

17.

Calculate the volume of the rock based on the diagram.

a)

10.0 mL

b)

16.0 mL

c)

30.0 mL

d)

40.0 mL

18.

Which two objects could be made from the same material?

a)

A and B

b)

B and C

c)

C and D

19.

The graph shows the number of inches a plant grew each week.

Between which 2 weeks did the plant grow the MOST?

a)

Week 1 and Week 2

b)

Week 2 and Week 3

c)

Week 3 and Week 4

d)

Week 4 and Week 5

20.

According to the graph, when did the plant reach a height of 5 inches tall ?

a)

2.5 weeks

b)

2 weeks

c)

9 weeks

21.

What conclusions can you draw from this graph?

a)

The number of highway accidents has increased since 2000

b)

The number of highway accidents has decreased since 2000

c)

The number of highway accidents has stayed the same since 2000

22.

What was the approximate deer population after 3 months ?

a)

37

b)

27

c)

47

23.
Which liquid is the least dense?
a)
oil
b)
water
c)
syrup 
d)
plastic bottle
24.
Define the term "mass".
a)
Mass/Volume
b)
Anything that has mass and takes up space 
c)
The amount of space an object occupies.
d)
The amount of matter in an object.
25.
Volume is ...
a)
Mass/Volume
b)
The amount of matter in an object.
c)
The amount of space an object occupies.
d)
Anything that has mass and occupies space.
26.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
27.

What is the mass on this triple beam?

a)

272.0 g

b)

202.0 g

c)

272.5 g

28.
What tool is this?
a)
scale
b)
graduated cylinder
c)
triple beam balance
d)
massonater
29.

Based on Mr. Krabbs results (He sold 25 burgers on regular buns and 27 burgers with multi-colored buns), which of the following is a possible conclusion?

a)

Customers liked blue buns best.

b)

The colored buns did not increase sales.

c)

The colored buns increased sales.

d)

Will colored patties improve sales?

30.
How many variables should you change in an experiment?
a)
none
b)
1
c)
2 or more
d)
depends on the type of experiment
31.
A factor in an experiment that stays the same.
a)
control group
b)
constant
c)
dependent variable
d)
experimental group
32.
When you make a prediction based upon your observations, it is called a/an _____________.
a)
Inference
b)
Observation
c)
Control group
d)
Guess
33.

What is the effect of salt water on the height of grass ?

What is the dependent variable in the above question?

a)

salt water

b)

height of grass

c)

average

d)

effect

34.
What is an if....then statement that predicts the outcome of an experiment or how the Independent variable effects the dependent variable?
a)
Conclusion
b)
Materials
c)
Hypothesis
d)
Problem
35.

Students used various temperatures of water to see which one dissolved candy faster.

What was the Dependent Variable?

a)

Amount of Candy

b)

Amount of Water

c)

Temperature of Water

d)

Time for Candy to Dissolve

36.

Which of the following would be an observation.

a)

The hydroflask is red

b)

Hydroflask make the water taste better

c)

Hydroflasks are way too expensive

37.

Which of these is an inference ?

a)

The barrel is brown

b)

Homer has blue pants on

c)

Homer spilled the barrel of green liquid

d)

There is a green liquid on the floor

38.
Which lab tool might you use to measure the volume of a liquid?
a)
electric scale
b)
bunsen burner
c)
test tube
d)
graduated cylinder
39.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
40.
Which box has a higher density?  
a)
Box A
b)
Box B
c)
cannot be determined
d)
they are the same
41.
Which tool measures liquid volume most precisely?
a)
Graduated cylinder
b)
Beaker
c)
Erlenmeyer flask
42.
Why are advantageous traits more likely to be passed onto offspring?
a)
Because they are more likely to survive and reproduce.
b)
Because they come from dominant alleles.
c)
Because they come from recessive alleles.
d)
Because the trait is an acquired phenotype.
43.

What kind of change is cutting paper?

a)
b)
44.
In a chemical equation, is it true that -
a)
the reactant side and product side can have different numbers of atoms for each element
b)
there can be different elements on the reactant side and the product side
c)
an element or compound must be accompanied by a phase change
d)
the coefficients indicate the number of molecules of each reactant used and the number of molecules of each product made
45.

Which of the following models best demonstrates Conservation of Mass during a chemical reaction ?

a)
F
b)
G
c)
H
d)
J
46.
Two clear colorless solutions were combined.
The student observed that the temperature changed from 25 •C to 23 •C when the solutions were combined and that a white substance rapidly formed and settled to the bottom of the container. What most likely happened to produce these results?
a)
One of the original compounds came out of solution
b)
The solutions reacted chemically
c)
Some of the water froze into ice crystals
d)
Rapid evaporation of water occurred, leaving a solid
47.
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
48.

Which of the following BEST describes a chemical reaction?

a)

A compound is crushed into a fine powder.

b)

Atoms break apart into protons, electrons, and neutrons

c)

Atoms are rearranged into new substances

d)

Molecules move faster until they fly apart from each other

49.

In a ___________change, a substance changes into a different substance.

a)

Physical

b)

Chemical

50.

Which of these is a sign that a chemical change has occurred?

a)

A change in size

b)

An unexpected color change

c)

A temperature change

d)

A change of state

e)

Bubbles or gas produced

51.

The Law of Conservation of Mass states

a)

that matter exists in all states and reacts the same

b)

that matter can only be changed into new substances by introducing a catalyst

c)

that matter exists in the same state throughout any chemical change

d)

that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants

52.

a copper penny turning greenish after a few years.

a)

Physical change

b)

Chemical change

53.

Which of the following IS a physical change?

a)

Getting a haircut

b)

Rusty metal

c)

sour milk

d)

A compound

54.

The materials AFTER a chemical reaction are called the....

a)

Reactants

b)

Products

c)

Quotient

55.

The Law of Conservation of Mass states that the total mass of the reactants should be

a)

More than the mass of the products

b)

Equal to the mass of the products

c)

Ignored during the reaction

d)

Less than the mass of the products

56.
What type of reaction is shown in the photo?
a)
Exothermic
b)
Isothermic
c)
Endothermic
d)
None of the  above
57.

What type of chemical reaction absorbs heat and feels cold ?

(Chemical ice pack)

a)

exothermic

b)

endothermic

58.

The materials to the RIGHT of the arrow in a chemical reaction are known as......

a)

Reactants

b)

Products

59.

Which of the following would react the SLOWEST ?

a)

A

b)

B

c)

C

d)

D

60.

Which of the following would react the FASTEST ?

a)

A

b)

B

c)

C

d)

D

61.

In a chemical reaction which of the following is TRUE ?

a)

Matter is gained

b)

Matter is lost

c)

Atoms are rearranged

62.
Research question: does the distance a person kicks a soccer ball effect how well they will do on their math test.  What is the dependent variable?
a)
How far they kick the soccer ball
b)
who the person is
c)
how well they do on the math test
d)
Type of soccer ball.
63.

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

a)

Dependent

b)

Independent

c)

Control

d)

Compound

64.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
a)
The type of plant
b)
The amount of sunlight
c)
The type of music
d)
The type of liquid
65.
Ms. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?
a)
Distance traveled by the ball
b)
Height of the ramp
c)
Mass of the ball
d)
Where the experiment took place.
66.
The independent variable is the ONE thing you _____ to test your hypothesis.
a)
change
b)
keep the same
c)
experiment with
d)
investigate
67.
Catherine is testing which soil will help grass grow the tallest.  The height of the grown grass is the __ variable.
a)
constant (stays the same)
b)
independent (it's what you change)
c)
dependent (it's what you measure)
68.
What would the INDEPENDENT variable be in an experiment testing which  paper airplane design goes furthest?
a)
the paper used
b)
the paper airplane design
c)
the distance of each plane's flight
d)
how hard the plane is thrown
69.
Mrs. Ahlers set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?
a)
Distance traveled by the ball
b)
Height of the ramp
c)
Mass of the ball
d)
Where the experiment took place.
70.

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

a)

Dependent

b)

Independent

71.
Why are advantageous traits more likely to be passed onto offspring?
a)
Because they are more likely to survive and reproduce.
b)

Because they are cool

c)

Because those traits hurt organisms' chance for survival

72.

Which of the following is NOT an example of natural selection?

a)

People selectively breeding dogs to create designer breeds

b)

Giraffes developing long necks to eat food from trees

c)

Finches developing different beaks depending upon the food available

d)

Male birds of certain species developing colorful feathers to attract female mates.

73.
Two organisms that are closely related would have
a)

a very similar DNA sequence

b)
exactly the same DNA sequences
c)
completely different DNA sequence
74.
Inherited trait that helps an organism survive is a(n) __________.
a)
Fossil
b)
Adaptation
c)
Ancestor
d)
Natural selection
75.
The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct?
a)
Fossil A and C are the same age
b)
Fossil B is older than fossil C
c)
Fossils A is older than fossil B
d)
Fossil D is older than fossil C
76.
What is another name for natural selection?
a)
survival of the smartest
b)
survival of the fastest
c)
survival of the biggest
d)
survival of the fittest
77.

According to this cladogram, birds are most closely related to -

a)
Amphibians
b)
Rodents and rabbits
c)
Crocodiles
d)
Birds
78.

A group of zebras are all different. This would be an example of......

a)

Competition

b)

Overproduction

c)

Variation

79.

Trees fighting for water and sunlight sunlight would be considered.....

a)

Competition

b)

Overproduction

c)

Variation

80.

Why is the mouse population changing over time?

a)

The hawks eat more dark mice than light mice because the dark mice taste better

b)

The hawks eat more light mice than dark mice because they can see the light mice more easily

c)

The hawks eat more dark mice than light mice because they can see the dark mice more easily

81.

Which of the following is an important part of natural selection?

a)

All individuals in a species are the same.

b)

There is no competition for resources among organisms.

c)

Individuals with better adaptations survive and pass on those traits to their offspring

82.

The image shows light and dark colored moths that live on a tree. Which result is most likely to occur to the moth population over time due to predation?

a)

The number of light colored moths in the population will increase

b)

There will be more dark colored moths than light colored moths

c)

The dark colored moths will move to a different type of tree

83.
What does a food web represent?
a)

All connections of energy flow throughout all organisms in a habitat.

b)

The specific ways that mutualism is carried out.

c)

A single pathway or energy flow between organisms. 

d)

How carnivores get their food. 

84.
The living portions of the ecosystem.
a)
Biotic factors
b)
Abiotic factors
85.
As you move upward, from level to level, in an energy pyramid, energy _____.
a)

increases

b)

decreases

c)

stays the same

d)

increases only a little bit

86.

What is the main source of energy in this food chain?

a)

Plant

b)

Sun

c)

Deer

d)

Wolf

87.

What does an energy pyramid represents ?

a)

How much sunlight is available for the ecosystem to use.

b)

How much energy a particular organism needs.

c)

How much energy is needed to build a pyramid.

d)

The amount of energy available to the next 'feeder' in a food web.

88.

What may happen if the red tailed hawk was removed from the food web pictured?

a)

The population of insects in the habitat would increase.

b)

The rabbit and shrew population would increase

c)

The willow tree population would increase.

89.

Mushrooms, bacteria, and maggots (fly larvae) are all examples of.....

a)

producers

b)

consumers

c)

decomposers

90.

If it weren't for _______________ in our ecosystem,plants would not get essential nutrients, and dead matter and waste would pile up.

a)

producers

b)

consumers

c)

predators

d)

decomposers

91.

Which two organisms compete for the same food ?

a)

Snowshow hare (rabbit) and shrew

b)

Lynx and shrew

c)

Lynx and Red-Tailed Hawk

d)

Red fox and Snowshoe hare (rabbit)

92.

Which organism might decompose the mountain lion and hawk when they die ?

a)

Squirrel

b)

Bacteria

c)

Snake

d)

Tree

93.
The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain members of the plant kingdom?
a)
A
b)
B
c)
C
d)
D
94.

The role (job) an organism plays in its ecosystem.

a)

habitat

b)

niche 

c)

heterotrogh

d)

biosphere

95.
The nonliving aspects of an ecosystem.
a)
Abiotic factors
b)
Biotic factors
96.
What are the Abiotic factors in this image? 
a)
water, sunlight, dirt, air
b)
birds and plants
c)
birds, water, dirt
d)
plants, water
97.
Why are advantageous traits more likely to be passed onto offspring?
a)
Because they are more likely to survive and reproduce.
b)
Because they come from dominant alleles.
c)
Because they come from recessive alleles.
d)
Because the trait is an acquired phenotype.
98.
The ability of an organism to survive and reproduce in its specific environment 
a)
diversity.
b)
evolution
c)
adaptation
d)
 fitness
99.

Which of the following is NOT an example of natural selection?

a)

People selectively breeding dogs to create designer breeds

b)

Insect populations developing resistance to certain pesticides.

c)

Bacteria becoming resistant to antibiotics.

d)

Male birds of certain species developing colorful feathers to attract female mates.

100.
The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct?
a)
Fossil A and C are the same age
b)
Fossil B is older than fossil C
c)
Fossils A is older than fossil B
d)
Fossil D is older than fossil C
101.
What is another name for natural selection?
a)
survival of the smartest
b)
survival of the fastest
c)
survival of the biggest
d)
survival of the fittest
102.
Predict which moth would increase in population
a)
light 
b)
dark
103.
The white feathers of a snowy owl allow it to blend in with its environment during the winter months (snow). This is an example of ________________
a)
Species
b)
Environmental Change
c)
Adaptation
d)
Variation
104.

What evidence for evolution is shown in the picture ?

a)

fossil record

b)

similar embryological development

c)

homologous structures

105.

If i eat breakfast, then I will do better in school because I have more energy. This statement would be considered a....

a)

hypothesis

b)

problem

c)

conclusion

106.

Testing a hypothesis is done by.....

a)

making a guess

b)

conducting an experiment

c)

drawing a conclusion

107.

Liquid Water changing into ice...

a)

evaporation

b)

freezing

c)

melting

d)

condensation

108.

Liquid Water changing into a gas

a)

evaporation

b)

freezing

c)

melting

d)

condensation

109.

All matter is made up of ....

a)

atoms

b)

cells

c)

DNA

110.

This change is a

a)

physical change

b)

musical change

111.

A change in temperature is an indication of which type of change?

a)

Physical Change

b)

Chemical Change

112.

This change is a

a)

chemical reaction

b)

physical change

c)

musical change

d)

Ice Ice baby

113.

What is evaporation?

a)

The process of a liquid becoming a solid

b)

The process of a solid becoming a liquid

c)

The process of a liquid becoming a gas

d)

The process of a gas becoming a liquid

114.

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

a)

Salt dissolving in water

b)

Water boiling into steam

c)

A nail rusting

d)

Ice melting

115.
Question Image

Match the following

a)
1.

gas

b)
2.

liquid

c)
3.

solid

116.
What particle provided the positive charge for an atom?
a)
proton 
b)
neutron
c)
electron
d)
nucleus
117.

An atom has 25 protons and 30 neutrons. How many electrons are needed to make the atom neutral?

a)

0

b)

25

c)

30

d)

35

118.

The smallest particle of an element is known as the

a)

Periodic Table

b)

Atom

c)

Group

d)

Period

119.

Each neutron has a _________________ charge.

a)

positive

b)

negative

c)

neutral

d)

shocking

120.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons 
121.

In 1904 JJ Thompson discovered that atoms actually contained particles called electrons. Which of these best describes an electron?

a)

Much much smaller than the other particles, positively-charged

b)

Much much smaller than the other particles, negatively-charged

c)

Make up most of the mass of the atom, negatively-charged

d)

Contain most of the mass of the atom, no charge

122.
Complete the missing label on the diagram.
a)
Neutron
b)
Centre
c)
Nucleus
d)
Sub atomic particle
123.

A subatomic particle that has a negative charge is called --

a)

a proton

b)

a neutron

c)

an electron

d)

the nucleus

124.

When an atom has the same number of protons and electrons, the atom is __________?

a)

neutron

b)

neutral

c)

newton

d)

nutella

125.
What is at the center of every atom?
a)
An electron
b)
A compound
c)
A molecule
d)
A nucleus
126.

Letter A is showing

a)

Neutrons

b)

Electrons

c)

Protons

d)

Nucleus

127.

Which subatomic particles make up the mass of an atom?

a)

protons only

b)

protons and neutrons

c)

protons, neutrons and electrons

d)

protons and electrons

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