Density Practice Problems
Do the following density practice problems using the equation for density and the density
triangle. Be sure to show all work and to use the correct units.
Example: A student has a sample of aluminum that has a mass of 27 g and a volume of 10 cm3.
What is the density of aluminum?
Density = mass/volume
Density = 27 g / 10 cm3
Density = 2.7 g/cm3
1) A wooden block has a mass of 562 g and a volume of 72 cm3. What is the density?
2) A foam square has a mass of 62 g and a volume of 72 cm3. What is the density?
3) A brick has a mass of 562 g and a volume of 43 cm3. What is the density?
4) A bottle of water has a volume of 560 mL and a mass of 1250 g. What is the density?
5) A student has a rectangular block. It is 2 cm wide, 3 cm tall, and 25 cm long. It has a
mass of 600 g. First, calculate the volume of the block:
Then, use that answer to determine the density of the block:
6) The density of a substance is 4.0 g/cm3. If a sample of the substance has a volume of 25
cm3, then what is its mass? (Hint: Use the equation: mass = density × volume.)
7)
You have a lead ball with a mass of 420 g. The density of lead is 10.5 g/cm3. What is the
volume of the ball? (Hint: Use the equation: volume = mass/density.)
8) A golden-colored cube is handed to you. The person wants you to buy it for $100,
saying that is a gold nugget. You pull out your old geology text and look up gold in the
mineral table, and read that its density is 19.3 g/cm3. You measure the cube and find
that it is 2 cm on each side, and weighs 40 g. What is its density? Is it gold? Should you
buy it?
Density Practice Problems
Do the following density practice problems using the equation for density and the density
triangle. Be sure to show all work and to use the correct units.
9) A soda has a volume of 560 mL and a density of 3.2 g/mL. What is the mass?
10) A wooden block has a volume of 176 cm3 and a density of 18.2 g/ cm3. What is the mass?
11) A soda has a mass of 1500 g and a density of 2.9 g/mL. What is the volume?
12) A wooden block has a mass of 986 g and a density of 16 g/ cm3. What is the volume?
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