Name: 
 

Chemistry 3


Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
The diameter of a carbon atom is 0.000 000 000 154 m. What is this number expressed in scientific notation?
a.
1.54 mc001-1.jpg 10mc001-2.jpg m
c.
1.54 mc001-5.jpg 10mc001-6.jpg m
b.
1.54 mc001-3.jpg 10mc001-4.jpg m
d.
1.54 mc001-7.jpg 10mc001-8.jpg m
 

 2. 
Which of the following measurements contains two significant figures?
a.
0.004 00 L
c.
0.000 44 L
b.
0.004 04 L
d.
0.004 40 L
 

 3. 
When a test instrument is calibrated, does its accuracy, precision, or reliability improve?
a.
precision
c.
reliability
b.
accuracy
d.
all of the above
 

 4. 
Which group of measurements is the most precise? (Each group of measurements is for a different object.)
a.
2 g, 3 g, 4 g
c.
2 g, 2.5 g, 3 g
b.
2.0 g, 3.0 g, 4.0 g
d.
1 g, 3 g, 5 g
 

 5. 
Which of the following measurements is expressed to three significant figures?
a.
0.007 m
c.
7.30 mc005-1.jpg 10mc005-2.jpg km
b.
7077 mg
d.
0.070 mm
 

 6. 
In the measurement 0.503 L, which digit is the estimated digit?
a.
5
b.
the 0 immediately to the left of the 3
c.
3
d.
the 0 to the left of the decimal point
 

 7. 
How many significant figures are in the measurement 0.003 4 kg?
a.
two
c.
five
b.
four
d.
This cannot be determined.
 

 8. 
Express the product of 2.2 mm and 5.00 mm using the correct number of significant digits.
a.
10 mmmc008-1.jpg
c.
11.0 mmmc008-3.jpg
b.
11 mmmc008-2.jpg
d.
11.00 mmmc008-4.jpg
 

 9. 
What is the metric system prefix for the quantity 0.000 001?
a.
centi-
c.
kilo-
b.
deci-
d.
micro-
 

 10. 
Which of the following volumes is the smallest?
a.
one microliter
c.
one milliliter
b.
one liter
d.
one deciliter
 

 11. 
What is the SI unit of mass?
a.
liter
c.
candela
b.
joule
d.
kilogram
 

 12. 
What is the temperature of absolute zero measured in mc012-1.jpgC?
a.
–373mc012-2.jpgC
c.
–173mc012-4.jpgC
b.
–273mc012-3.jpgC
d.
–73mc012-5.jpgC
 

 13. 
The weight of an object ____.
a.
is the same as its mass
c.
is not affected by gravity
b.
depends on its location
d.
is always the same
 

 14. 
What is the temperature –34mc014-1.jpgC expressed in kelvins?
a.
139 K
c.
239 K
b.
207 K
d.
339 K
 

 15. 
Chlorine boils at 239 K. What is the boiling point of chlorine expressed in degrees Celsius?
a.
93mc015-1.jpgC
c.
–61mc015-3.jpgC
b.
34mc015-2.jpgC
d.
–34mc015-4.jpgC
 
 
Commonly Used Metric Prefixes
Prefix
Meaning
Factor
mega (M)1 million times larger than the unit it precedes10nar001-1.jpg
kilo (k)1000 times larger than the unit it precedes10nar001-2.jpg
deci (d)10 times smaller than the unit it precedes10nar001-3.jpg
centi (c)100 times smaller than the unit it precedes10nar001-4.jpg
milli (m)1000 times smaller than the unit it precedes10nar001-5.jpg
micro (nar001-6.jpg)1 million times smaller than the unit it precedes10nar001-7.jpg
nano (n)1000 million times smaller than the unit it precedes10nar001-8.jpg
pico (p)1 trillion times smaller than the unit it precedes10nar001-9.jpg
 

 16. 
What is the quantity 0.0075 meters expressed in centimeters? Use the table above to help you.
a.
0.075 cm
c.
7.5 cm
b.
0.75 cm
d.
70.5 cm
 

 17. 
What is the quantity 7896 millimeters expressed in meters? Use the table above to help you.
a.
7.896 m
c.
789.6 m
b.
78.96 m
d.
789,600 m
 

 18. 
Which of the following equalities is NOT correct? Use the table above to help you.
a.
100 cg = 1 g
c.
1 cmmc018-1.jpg = 1 mL
b.
1000 mm = 1 m
d.
10 kg = 1 g
 

 19. 
A cubic meter is about the same as the volume occupied by a ____.
a.
kilogram of water
c.
washing machine
b.
cup of milk
d.
basketball arena
 

 20. 
What is the density of an object having a mass of 8.0 g and a volume of 25 cmmc020-1.jpg?
a.
0.32 g/cmmc020-2.jpg
c.
3.1 g/cmmc020-4.jpg
b.
2.0 g/cmmc020-3.jpg
d.
200 g/cmmc020-5.jpg
 



 
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