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2nd 6 Weeks Review - Science

Total questions: 63

Worksheet time: 49mins

Name
Class
Date
1.

What would the INDEPENDENT variable be in this experiment testing paper vs. construction paper: Does the type of paper an airplane is made of affect how far the airplane will fly?

a)

the type of paper used

b)

the model of paper airplane

c)

the distance of each plane's flight

d)

how hard the plane is thrown

2.
What is a controlled variable?
a)
A variable being tested in an experiment.
b)
A variable that changes depending on another variable.
c)
A variable that is kept the same in an experiment.
3.

Scenario: You want to test whether water helps to improve plant growth. What is the Independent Variable? (Remember: Independent Variables are what "I"change in the experiment.

a)

The growth of the plant

b)

Amount of Sunlight

c)

Amount of Water

4.
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, what is the dependent variable?
a)
Type of plant
b)
Water, apple juice, milk
c)
Plant growth
5.

Use the picture to select the correct statement.

a)

Oil is denser than water

b)

Pasta is less dense then crayon

c)

The paper clip is denser than every thing else

6.

Put the liquids in order from most dense to least dense?

a)

4,3,2,1

b)

1,2,3,4

c)

3,4,2,1

d)

4,3,1,2

7.

Which box has a higher density?

a)

A

b)

B

c)

They are the same

8.

An irregular shaped object was placed in a graduated cylinder. The initial volume was 50mL. The final volume was 75mL. What is the volume of the irregular shaped object?

a)

25mL

b)

125mL

c)

75mL

d)

50mL

9.
In the water displacement method for finding volume
a)
 You subtract the final volume from the initial volume
b)
You subtract the initial volume from the final volume
c)
You add the initial and final volumes
d)
You divide the final volume by 2 
10.
The density of an object is
a)
The mass divided by the volume D = m/v 
b)
The volume divided by the mass D = v/m 
c)
The same as its weight
d)
The same as the size of the object 
11.
An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2 ml. The height of the water rose to 7 ml. If the mass of the stone was 25 g, what was its density?
a)
5 ml
b)
16 g
c)
.20 g/ml3
d)
5 g/cm3
12.

Number of C's in Na₂CO₃

a)

1

b)

2

c)

3

d)

5

13.
The number of Na's in Na₂CO₃
a)
1
b)
2
c)
3
d)
6
14.
How many Elements are in the compound C2H8O ?
a)
2
b)
1
c)
3
d)
0
15.
How many total atoms are in the compound C2H8O ?
a)
11
b)
2
c)
8
d)
1
16.

How many different elements are in COOCH12O6?

a)

3

b)

4

c)

6

d)

22

17.

Which of the following does not describe elements?

a)

All particles are alike

b)

Can be broken down into simpler substances

c)

Have unique sets of properties

d)

Join together to form compounds

18.

What is carbon (C)?

a)

Element

b)

Compound

c)

Mixture

19.

What is sodium bicarbonate (NaHCO₃)?

a)

Element

b)

Compound

c)

Mixture

20.

What is an element?

a)

A substance that is made up of one type of atom and can't be reduced to simpler substances.

b)

A substance made of two or more different atoms chemically bonded to one another. They can only be destroyed by chemical processes.

c)

A material containing two or more elements or compounds that are in close contact and are mixed in any proportion. They can be separated by physical means.

21.

This picture represents which of the following?

a)

element

b)

compound

22.

This picture represents which of the following:

a)

element

b)

compound

23.

This picture represents which of the following?

a)

element

b)

compound

24.

This picture represents which of the following?

a)

element

b)

compound

25.

This picture represents which of the following?

a)

element

b)

compound

26.
A compound consists of two or more elements bound together.
a)
True
b)
False
27.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
28.

Both elements and compounds are pure substances.

a)

Agree

b)

Disagree

29.

Represented by an unique chemical symbol

a)

Elements

b)

Compounds

c)

Both

30.

What is the difference between Co and CO?

a)

CO is an element but Co is a compound

b)

Nothing is different. They are the same thing.

c)

CO is two elements and Co is only one element

d)

Co is not a pure substance

31.

What type of change is this?

a)

Physical

b)

Chemical

c)

Both

32.

What type of change is this?

a)

Physical

b)

Chemical

c)

Neither

33.

A physical change...

a)

changes the physical properties of an object, but does not create a new substance.

b)

creates a new substance and cannot be undone.

34.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

35.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

36.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

37.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

38.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

39.

A chemical change

a)

changes the physical properties of an object, but does not create a new substance.

b)

creates a new substance and cannot be undone.

40.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

41.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

42.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

43.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

44.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

45.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

46.

Is this an example of a physical or chemical change?

a)

physical

b)

change

47.

Is melting butter for popcorn a chemical or physical change?

a)

chemical

b)

physical

48.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
49.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
rust
50.
Dissolving sugar in water is an example of a 
a)
physical change
b)
chemical change
51.

The melting of wax is an example of a

a)

chemical change

b)

physical change

52.
Which is an example of a chemical reaction?
a)
paper cut into small pieces
b)
chocolate melting in a pan
c)
flour and sugar mixed in a bowl
d)
cookies baking in an oven
53.
All of the following would classify an element as a metal except?
a)
Dull
b)
Luster
c)
Malleable
d)
Hard
54.
One property of a nonmetals is that it is a good conductor of electricity?
a)
true
b)
false
55.
Which of the following properties refers to the ability of metals to be drawn into wires?
a)
A. malleability 
b)
B. compressibility
c)
C. ductility
d)
D. luster
56.
If a substance breaks easily, it is said to be ________________.
a)
A. Magnetic
b)
B. Brittle
c)
C. Conductive
d)
D. Ductile
57.
Metals appear to the _______ of the dark ziz-zag line on the periodic table. 
a)
A. right
b)
B. middle
c)
C. left
58.
Anytime you see the word SEMICONDUCTOR - what substance do you have?
a)
Metal
b)
Nonmetal
c)
Metalloid
59.

Silicon is shiny, brittle and conducts electricity. It is a:

a)

metal

b)

metalloid

c)

nonmetal

60.

Which elements are colored red?

a)

nonmetals

b)

metals

c)

metalloids

61.

An unknown element conducts some heat and electricity, has a shiny luster, and broke easily. This element is most likely a

a)

metal

b)

nonmetal

c)

metalloid

d)

cannot be determined

62.

Elements that are normally in a gas form, that are dull, brittle, and poor conductors

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Solids

63.
How would this element be classified?
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Metamorphic

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