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Unit 1 Review

Total questions: 69

Worksheet time: 3hrs 27mins

Name
Class
Date
1.

What step does every scientific experiment begin with?

a)

hypothesis

b)

question/problem

c)

background research

d)

conclusion

2.

Which of these contains the steps of the scientific method in the correct order?

a)

Ask a question, do background research, state your hypothesis, conduct an experiment, analyze data, make a conclusion

b)

State your hypothesis, ask a question, do background research, conduct an experiment, analyze data, make a conclusion

c)

Ask a question, state your hypothesis, do background research, conduct an experiment, make a conclusion, analyze data

d)

State your hypothesis, ask a question, do background research, make a conclusion, conduct an experiment, analyze data

3.
True or False: Your hypothesis can never be wrong.
a)
True
b)
False
4.
Should experiments be repeated over and over to see if the results are the same each time?
a)
yes
b)
no
5.

What is the definition of mass?

a)

how much something weighs

b)

a measure of how much matter an object has

c)

a force of attraction between 2 objects

d)

a force gravity exerts on a body

6.

What is the definition of weight?

a)

a measure of how much matter an object has

b)

a measure of force of gravity on an object

c)

the force an objects pushes on the ground

d)

the force on an object due to its size

7.

What device is used to measure weight?

a)

a triple beam balance

b)

a spring scale

c)

stopwatch

d)

meter stick

8.

The mass of an object decreases as it moves away from Earth.

a)

True

b)

False

9.

How close a measurement is to the true value is called..

a)

Accuracy

b)

Precision

c)

Significant

d)

Estimate

10.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
11.
A set of data are all close to each other, but they are not close to the actual value.  This set of data can be described as...
a)
accurate
b)
precise
c)
both precise and accurate
12.
To calculate density you would use the following equation
a)
D = M/V
b)
M = D x V
c)
V = M/ D
d)
NONE OF THESE
13.
If a cube has a mass of 50 grams and a volume of 10cc, what is its density?
a)
10/50 = .2 cc/g
b)
10cc x 50 g = 500 gcc
c)
50g/10cc = 5 g/cc
d)
not enough information
14.
If a cube has a mass of 50 grams and a volume of 10cc, what is its density?
a)
10/50 = .2 cc/g
b)
10cc x 50 g = 500 gcc
c)
50g/10cc = 5 g/cc
d)
not enough information
15.

An unknown substance has a mass of 12.42 g and a volume of 9 mL. It looks transparent and but it appears to be sticky and does not move easily. Based from this substance's density, which is most likely this substance based from the table.

a)

Corn Syrup

b)

Pure Water

c)

Ice

d)

Gold

16.

An unknown substance has a mass of 1 g and a volume of 1 mL. It looks transparent and moves easily when the graduated cylinder is moved. Based from this substance's density, which is most likely this substance based from the table.

a)

Corn Syrup

b)

Pure Water

c)

Ice

d)

Gold

17.
If you are given the density and volume of an item, how would you calculate its mass?
a)
D = M/V  SO..
M = D/V
b)
D = M/V  SO...
M = V/D
c)
D = M/V SO...
M = D x V
18.
What is the mass of an rock that has a density of 3.52 g/cc. and when put in a graduated cylinder with 50ml of water makes the level rise to 62ml.
* quick search -what is the rock you have tested?
a)
42.24 ml
b)
42.24 g
c)
12 g
d)
12 ml
19.
77 is 51 percent of what?
a)
150.98
b)
150.89
c)
150.99
d)
150.97
20.
90 is 80 percent of what?
a)
112.51
b)
112.05
c)
112.50
d)
112.51
21.
What percent of 68 is 19?
a)
27.93%
b)
27.96%
c)
27.95%
d)
27.94%
22.
How many significant figures does the following number have: 0.002040
a)
6
b)
4
c)
3
d)
2
23.
How many significant figures does the following number have: 100.00210
a)
7
b)
5
c)
10
d)
8
24.
How many significant figures does the following number have: 100.3
a)
4
b)
3
c)
5
d)
2
25.
Round 0.010229 to four sig figs
a)
1022
b)
1023
c)
0.01023
d)
0.01022
26.
Round 1047.78 to three sig figs
a)
104
b)
105
c)
1050
d)
1050.00
27.

What is 78.5 rounded to one significant figure?

a)

79

b)

78.5

c)

70

d)

80

28.

Round off 1,296,717 to 3 significant figures

a)

1,290,000

b)

1,296,000

c)

1,297,000

d)

1,300,000

29.

What is 0.658 rounded to 1 significant figure?

a)

0

b)

0.66

c)

0.7

d)

0.658

30.
Round 27,955 to the nearest hundred.
a)
27,900
b)
28,955
c)
28,000
d)
900
31.
Calculate 1.23 m x 0.89 m and give your answer with the correct number of significant figures.
a)
1.0 m2
b)
1.1 m2
c)
1.0947 m2
d)
1.095 m2
32.
Calculate 923 g ÷ 20312 cm3 and give your answer with the correct number of significant figures.
a)
0.04 g/cm3
b)
0.045 g/cm3
c)
0.0454 g/cm3
d)
0.05 g/cm3
33.
Calculate 12.47 m ÷ 3.2 s and give your answer with the correct number of significant figures.
a)
4 m/s
b)
3.9 m/s
c)
3.90 m/s
d)
3.897 m/s
34.
Calculate 0.020 cm x 50 cm x 11.1 cm and give your answer with the correct number of significant figures.
a)
10 cm3
b)
11.1 cm3
c)
11 cm3
d)
11. cm3
35.
a)

6.5

b)

6.60

c)

6

d)

6.65

36.

length?

a)

3.2 cm

b)

3.12 cm

c)

3 cm

d)

3.219 cm

37.

Volume?

a)

63.5 mL

b)

63 mL

c)

63.55 mL

d)

6 mL

38.
What is the volume of liquid in this graduated cylinder?
a)
43.0 mL
b)
43 mL
c)
43.05 mL
d)
44.5 mL
39.
What is the length of this line?
a)
5 cm
b)
4.300 cm
c)
4.30 cm
d)
4.3 cm
40.

What is aluminum (Al)?

a)

Element

b)

Compound

c)

Mixture

41.

What is water (H2O)?

a)

Element

b)

Compound

c)

Mixture

42.

What is table salt (NaCl)?

a)

Element

b)

Compound

c)

Mixture

43.

What is soda?

a)

Element

b)

Compound

c)

Mixture

44.

What is salt water?

a)

Element

b)

Compound

c)

Mixture

45.

What is salt water?

a)

Element

b)

Compound

c)

Mixture

46.

What is salad dressing?

a)

Element

b)

Compound

c)

Mixture

47.

What is carbon (C)?

a)

Element

b)

Compound

c)

Mixture

48.

What is sodium bicarbonate (NaHCO₃)?

a)

Element

b)

Compound

c)

Mixture

49.

What is iron?

a)

Element

b)

Mixture

c)

Compound

50.

What is air?

a)

Element

b)

Compound

c)

Mixture

51.

What is copper (Cu)?

a)

Element

b)

Compound

c)

Mixture

52.

What are eggshells (CaCO3)?

a)

Element

b)

Compound

c)

Mixture

53.

What is a compound?

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.

54.

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.

55.

What is a mixture?

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.

56.

A TABLE IS MATTER IN STATE

a)

Solid

b)

Liquid

c)

Gas

57.

MATTER COMES IN THREE DIFFERENT STATES

a)

Solid, liquid, book

b)

Solid, liquid, gas

c)

Solid, liquid, Water

58.

THE STATE OF MATTER OF THIS ELEMENT IS..

a)

 Solid

b)

Liquid

c)

Gas

59.

THE AIR IS MATTER IN STATE:

a)

Solid

b)

Liquid

c)

Gas

60.
state of matter with a fixed shape; does not take the shape of its container
a)
solid
b)
liquid
c)
gas
d)
water
61.
state of matter that can be poured; takes the shape of its container
a)
solid
b)
liquid
c)
gas
62.
state of matter that spreads out to completely fill its container
a)
solid
b)
liquid
c)
gas
d)
water
63.
water in gas form (moisture in the air)
a)
water vapor
b)
oxygen
c)
ice
d)
rain
64.
the temperature at which liquid water changes into solid ice
CHOOSE THE WRONG ANSWER
a)
32o F
b)
boiling point
c)
freezing point
d)
0o C
65.
the temperature at which liquid water changes into water vapor (gas)
CHOOSE THE WRONG ANSWER
a)
boiling point
b)
freezing point
c)
212o F
d)
100o C
66.

What must be done to change water from liquid to solid?

a)

Raise the temperature.

b)

Lower the temperature.

67.

What must be done to change water from solid to liquid?

a)

Raise the temperature.

b)

Lower the temperature.

68.

What must happen to water vapor (gas) to become liquid water?

a)

It must be heated.

b)

It must be cooled.

69.

What must happen for liquid water to evaporate (become a gas)?

a)

It must be heated.

b)

It must be cooled.

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