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Significant Figures, Measurement, and Unit Conversion

Total questions: 45

Worksheet time: 2hrs 5mins

Name
Class
Date
1.

How many significant figures does the following measurement have:


0.002040 mg

a)

6

b)

4

c)

3

d)

2

2.

How many significant figures does the following measurement have:


1,341,000 m.

a)

4

b)

3

c)

2

d)

7

3.

How many significant figures does the following measurement have:


10.0 g

a)

1

b)

4

c)

3

d)

2

4.

How many significant figures does the following measurement have:


4.56 x 102 mm

a)

5

b)

4

c)

6

d)

3

5.

How many significant figures does the following measurement have:


800. μg

a)

6

b)

1

c)

2

d)

3

6.

Round 0.010229 mA to four sig figs

a)

1022 mA

b)

1023 mA

c)

0.01023 mA

d)

0.01022 mA

7.

Round 1047.78 mL to three sig figs

a)

104 mL

b)

105 mL

c)

1050 mL

d)

1050.00 mL

8.

Round 78.5 g to one significant figure

a)

79 g

b)

78.5 g

c)

70 g

d)

80 g

9.

Round 0.05 g to three significant figure

a)

0.0500 g

b)

0.05 g

c)

0.053 g

d)

3.05 g

10.

Round 19.99 Mb to two significant figures

a)

20.0 Mb

b)

20 Mb

c)

19.9 Mb

d)

19 Mb

11.
Write 0.00000707 in scientific notation.
a)
7.07 x 10-6
b)
7.07 x 106
c)
707 x 108
d)
707 x 10-8
12.
Write 6,700 in scientific notation.
a)
6.7 x 103
b)
6.7 x10-3
c)
67 x 102
d)
67 x 10-2
13.
Write 52,300,000 in scientific notation.
a)
5.23 x 107
b)
5.23 x 10-7
c)
52.3 x 106
d)
52.3 x 10-6
14.
Write 0.037 in scientific notation.
a)
3.7 x 10-2
b)
3.7 x 102
c)
37 x 10-3
d)
37 x 103
15.
The table shows the mass in grams of one atom of each of several elements. List the elements in order from the least mass to greatest mass per atom.
a)
hydrogen, carbon, oxygen, silver, gold
b)
hydrogen, oxygen, gold, siver, carbon
c)
carbon, oxygen, silver, gold, hydrogen
d)
gold, oxygen, carbon, silver, hydrogen
16.
Write 7.113 x 107 in standard form.
a)
71,130,00
b)
7,113,000
c)
0.0000007113
d)
7,113
17.
Write 2.08 x 102  in standard form.
a)
208
b)
0.0208
c)
20,800
d)
0.208
18.
Write 7.8 x 10-3  in standard form.
a)
0.0078
b)
7,800
c)
78
d)
0.078
19.
Write 8.73 x 10-4  in standard form.
a)
0.000873
b)
0.0873
c)
87,300
d)
8,730
20.

2.12 cm + 3.5 cm =

a)

5 cm

b)

5.6 cm

c)

5.62 cm2

d)

5.620 cm2

21.

9.845 mL - 6.5 mL =

a)

4.0 mL

b)

3.3 mL

c)

3.35 mL

d)

3.345 mL

22.

25 m × 5 m

a)

125 m2

b)

120 m2

c)

100 m2

d)

130 m2

23.

5.0 nm × 1.0 nm =

a)

5.0 nm2

b)

5 nm2

c)

5 nm

d)

5.0 nm

24.

24.4 m / 2.2 s =

a)

11.1 m/s

b)

11.09 m/s

c)

11 m/s

d)

11.091 ms

25.

1000 km x 12 km

a)

12,000 km2

b)

10,000 km2

c)

1 km2

d)

12,000.0 km2

26.
If an object has a density of 3.6 g/mL and you put it into water, will it sink or float?  
a)
sink
b)
float
27.

Here are 5 cubic centimeters (cm3). All together they have a mass of 20 g what is the density?

a)

3 g/cm3

b)

80 grams

c)

4 g/cm3

d)

80 g/cm3

28.
Density is...
a)
the amount of mass in an object
b)
the amount of space an object takes up
c)
the amount of mass in a given space
d)
the weight of an object
29.

Find the density of a 2.0 cm x 2.0 cm x 2.0 cm cube with a mass of 64 g.

a)

6.0 cm3

b)

12 g/cm3

c)

128 g/cm3

d)

8.0 g/cm3

30.

If an object has a density of 0.67 g/mL and you put it into water, will it sink or float?

a)

sink

b)

float

31.

What units can be used to express density?

a)

grams per milliliter (g/mL)

b)

grams (g)

c)

millimeters (mm)

d)

milliliters (mL)

32.

Convert 650 m to km

a)

6.5 km

b)

0.65 km

c)

65 km

d)

0.065 km

33.
Convert 1,730 m to km.
a)
173 km
b)
17.3 km
c)
1.73 km
d)
17,300 km
34.

16 cups = 1 gallon


Convert 3.5 gallons into cups.

a)

56 cups

b)

0.21875 cups

c)

19.5 cups

d)

48 cups

35.

1yd = 3 ft


10 yards = _______ feet

a)

360

b)

30

c)

3 1/2

d)

120

36.

Convert 41 inches into cm.


1 in = 2.54 cm

a)

1.0 x 102 cm

b)

1.6 x 101 cm

c)

6.4 x 10-2 cm

d)

4.4 x 101 cm

37.

Convert 1.35 x 102 cm into km.

a)

1.35 x 10-3 km

b)

1.35 x 103 km

c)

1.35 x 10-2 km

d)

1.35 x 101 km

38.

1 μL = 10-6 L


Convert 75 μL to L.

a)

7.5 x 10-5 L

b)

7.5 x 10-6 L

c)

7.5 x 106 L

d)

7.5 x 107 L

39.

1 gallon = 128 fl oz


How many gallons is a 44 oz drink?

a)

0.34 gal

b)

5.63 x 103 gal

c)

0.44 gal

d)

0.61 gal

40.

Measure

a)

7.15 mL

b)

8.5 mL

c)

7.015 mL

d)

7.1 mL

41.

Measure

a)

5.0 mL

b)

10.5 mL

c)

6.0 mL

d)

5.5 mL

42.

Meausure

a)

13.5 oC

b)

13.0 oC

c)

10.3 oC

d)

10.5 oC

43.

Measure

a)

2.46 cm

b)

2.5 cm

c)

2.4 cm

d)

2.4444 cm

44.

Measure

a)

7.5 cm

b)

0.75 cm

c)

0.52 cm

d)

0.95 cm

45.

Measure

a)

20.0 oC

b)

20 oC

c)

20. oC

d)

200 oC

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