Chemistry Chapter 3A (Prentice)
 
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Chemistry Chapter 3A (Prentice)

Matching
 
 
Match each item with the correct statement below.
a.
absolute zero
e.
mass
b.
Kelvin temperature scale
f.
significant figure
c.
Celsius temperature scale
g.
precision
d.
weight
h.
accuracy
 

 1. 

 closeness to true value
 

 2. 

 narrowness of range of measurements
 

 3. 

 known or estimated in a measurement
 

 4. 

 the quantity of matter an object contains
 

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

 5. 
The diameter of a carbon atom is 0.000 000 000 154 m. What is this number expressed in scientific notation?
a.
1.54 mc005-1.jpg 10mc005-2.jpg m
c.
1.54 mc005-5.jpg 10mc005-6.jpg m
b.
1.54 mc005-3.jpg 10mc005-4.jpg m
d.
1.54 mc005-7.jpg 10mc005-8.jpg m
 

 6. 
The expression of 5008 km in scientific notation is ____.
a.
5.008 mc006-1.jpg 10mc006-2.jpg km
c.
5.008 mc006-5.jpg 10mc006-6.jpg km
b.
50.08mc006-3.jpg 10mc006-4.jpg km
d.
5.008 mc006-7.jpg 10mc006-8.jpg km
 

 7. 
What is the result of multiplying 2.5 mc007-1.jpg 10mc007-2.jpg by 3.5 mc007-3.jpg 10mc007-4.jpg?
a.
8.75 mc007-5.jpg 10mc007-6.jpg
c.
8.75 mc007-9.jpg 10mc007-10.jpg
b.
8.75 mc007-7.jpg 10mc007-8.jpg
d.
8.75 mc007-11.jpg 10mc007-12.jpg
 

 8. 
What is the result of adding 2.5 mc008-1.jpg 10mc008-2.jpg and 3.5 mc008-3.jpg 10mc008-4.jpg?
a.
2.9 mc008-5.jpg 10mc008-6.jpg
c.
2.9 mc008-9.jpg 10mc008-10.jpg
b.
6.0 mc008-7.jpg 10mc008-8.jpg
d.
6.0 mc008-11.jpg 10mc008-12.jpg
 

 9. 
The closeness of a measurement to its true value is a measure of its ____.
a.
precision
c.
reproducibility
b.
accuracy
d.
usefulness
 

 10. 
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
 

 11. 
When a test instrument is calibrated, does its accuracy, precision, or reliability improve?
a.
precision
c.
reliability
b.
accuracy
d.
all of the above
 

 12. 
Which of the following measurements (of different masses) is the most accurate?
a.
3.1000 g
c.
3.122 22 g
b.
3.100 00 g
d.
3.000 000 g
 

 13. 
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
 

 14. 
Three different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a reading of 7.32 g for the mass of the standard. These results imply that the balance that was used is ____.
a.
accurate
c.
accurate and precise
b.
precise
d.
neither accurate nor precise
 

 15. 
Which of the following measurements is expressed to three significant figures?
a.
0.007 m
c.
7.30 mc015-1.jpg 10mc015-2.jpg km
b.
7077 mg
d.
0.070 mm
 

 16. 
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
 

 17. 
How many significant figures are in the measurement 0.003 4 kg?
a.
two
c.
five
b.
four
d.
This cannot be determined.
 

 18. 
How many significant figures are in the measurement 40,500 mg?
a.
two
c.
four
b.
three
d.
five
 

 19. 
How many significant figures are in the measurement 811.40 grams?
a.
two
c.
four
b.
three
d.
five
 

 20. 
Express the sum of 1111 km and 222 km using the correct number of significant digits.
a.
1300 km
c.
1333 km
b.
1330 km
d.
1333.0 km
 

 21. 
Express the sum of 7.68 m and 5.0 m using the correct number of significant digits.
a.
12.68 m
c.
13 m
b.
12.7 m
d.
10 m
 

 22. 
Express the product of 2.2 mm and 5.00 mm using the correct number of significant digits.
a.
10 mmmc022-1.jpg
c.
11.0 mmmc022-3.jpg
b.
11 mmmc022-2.jpg
d.
11.00 mmmc022-4.jpg
 

 23. 
What is the measurement 111.009 mm rounded off to four significant digits?
a.
111 mm
c.
111.01 mm
b.
111.0 mm
d.
110 mm
 

 24. 
What is the measurement 1042 L rounded off to two significant digits?
a.
1.0 mc024-1.jpg 10mc024-2.jpg L
c.
1050 L
b.
1040 L
d.
1.1 mc024-3.jpg 10mc024-4.jpg L
 

 25. 
Express the product of 4.0 mc025-1.jpg 10mc025-2.jpg m and 8.1 mc025-3.jpg 10mc025-4.jpg m using the correct number of significant digits.
a.
3 mc025-5.jpg 10mc025-6.jpg
c.
3.2 mc025-9.jpg 10mc025-10.jpg
b.
3.0 mc025-7.jpg 10mc025-8.jpg
d.
3.24 mc025-11.jpg 10mc025-12.jpg
 

 26. 
When multiplying and dividing measured quantities, the number of significant figures in the result should be equal to the number of significant figures in ____.
a.
all of the measurements
b.
the least and most precise measurements
c.
the most precise measurement
d.
the least precise measurement
 

 27. 
What is the volume of a salt crystal measuring 2.44 mc027-1.jpg 10mc027-2.jpg m by 1.4 mc027-3.jpg 10mc027-4.jpg m by 8.4 mc027-5.jpg 10mc027-6.jpg m?
a.
2.9 mc027-7.jpg 10mc027-8.jpg mmc027-9.jpg
c.
2.9 mc027-13.jpg 10mc027-14.jpg mmc027-15.jpg
b.
2.9 mc027-10.jpg 10mc027-11.jpg mmc027-12.jpg
d.
2.9 mc027-16.jpg 10mc027-17.jpg mmc027-18.jpg
 

 28. 
What quantity is represented by the metric system prefix deci-?
a.
1000
c.
0.1
b.
100
d.
0.01
 

 29. 
What is the metric system prefix for the quantity 0.000 001?
a.
centi-
c.
kilo-
b.
deci-
d.
micro-
 

 30. 
The chief advantage of the metric system over other systems of measurement is that it ____.
a.
has more units
c.
is in French
b.
is in multiples of 10
d.
is derived from nature itself
 



 
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