Name: 
 

Density


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

 1. 
Density is found by dividing ____.
a.
mass by volume
c.
mass by area
b.
volume by mass
d.
area by mass
 

 2. 
What is the density of an object having a mass of 8.0 g and a volume of 25 cmdensity_files/i0030000.jpg?
a.
0.32 g/cmdensity_files/i0030001.jpg
c.
3.1 g/cmdensity_files/i0030002.jpg
b.
2.0 g/cmdensity_files/i0030003.jpg
d.
200 g/cmdensity_files/i0030004.jpg
 

 3. 
What is the volume of 80.0 g of ether if the density of ether is 0.70 g/mL?
a.
5.6 density_files/i0040000.jpg 10density_files/i0040001.jpg
c.
8.8 density_files/i0040002.jpg 10density_files/i0040003.jpg
b.
1.1 density_files/i0040004.jpg 10density_files/i0040005.jpg
d.
8.0 density_files/i0040006.jpg 10density_files/i0040007.jpg
 

 4. 
What is the volume of 45.6 g of silver if the density of silver is 10.5 g/mL?
a.
0.23 mL
c.
479 mL
b.
4.34 mL
d.
none of the above
 

 5. 
If a liter of water is heated from 20density_files/i0060000.jpgC to 50density_files/i0060001.jpgC, what happens to its volume?
a.
The volume decreases.
b.
The volume increases.
c.
The volume first increases, then decreases.
d.
The volume first decreases, then increases.
 

 6. 
If the temperature of a piece of steel decreases, what happens to its density?
a.
The density decreases.
b.
The density increases.
c.
The density does not change.
d.
The density first increases, then decreases.
 

 7. 
As the density of a substance increases, the volume of a given mass of that substance ____.
a.
increases
c.
decreases
b.
is not affected
d.
fluctuates
 

Short Answer
 

 8. 
What is the density of an object having a mass of 4.0 g and a volume of 39.0 cubic centimeters?
 

 9. 
What is the volume of an object with a density of 7.73 g/cm3 and a mass of 5.40 density_files/i0110000.jpg 10density_files/i0110001.jpg g?
 

 10. 
The density of osmium, which is the densest metal, is 22.57 g/cmdensity_files/i0120000.jpg. What is the mass of a block of osmium that measures 1.00 cm density_files/i0120001.jpg 4.00 cm density_files/i0120002.jpg 2.50 cm?
 

Essay
 

 11. 
Explain the difference between mass and weight. Provide an example to illustrate the distinction.
 

 12. 
Why is the density of a metal greater than the density of water?
 

 13. 
You are given a jar containing a mixture of three different solid substances. The particles of each substance are larger than 0.5 cm in diameter. All you know about the substances is that each is a pure metal. Describe a method for determining the identities of the metals that make up the mixture. Assume that each metal is a different color, so you can tell one from the others.
 



 
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