Name: _______________________________ Date: ______________ Period: ______
Density Practice
Directions: Please answer all questions as completely as possible showing all
calculations and work needed. Also, don’t forget to include your units!
Density = Mass ÷ Volume
Volume = Mass ÷ Density
1. Calculate the density of object A.
Length = 6 cm
Width = 3 cm
Volume = ______________
2. Calculate the density of object B.
Length = 10 cm
Width = 5 cm
Volume = ______________
Mass = Density × Volume
Height = 1 cm
Mass = 36 g
Density = ____________
Height = 2 cm
Mass = 300 g
Density = ____________
3. Calculate the density of object C.
Initial water level in graduated cylinder with just water = 25 mL
Final water level in graduated cylinder after adding silly putty = 29 mL
Mass of silly putty = 8 g
Volume = ______________
Density = ____________
4. Circle all of the following materials that will float on water. (water density 1 g/mL)
Air = 0.001 g/cm3
Corn Oil = 0.93 g/cm3
Glycerine = 1.26 g/cm3
Corn Syrup = 1.38 g/cm3
Wood = 0.85 g/cm3
Steel = 7.81 g/cm3
Rubber = 1.34 g/cm3
Ice = 0.92 g.cm3
Water = 1.00 g/cm3
5. Assuming all the materials above don’t mix, show how the materials would “stack
up” in a graduated cylinder.
6. A student measures the mass of an 8 cm3 block of brown sugar to be 12.9 g.
What is the density of the brown sugar?
7. A chef fills a 50 mL container with 43.5 g of cooking oil. What is the density of the
oil?
8. Calculate the mass of a liquid with a density of 2.5 g/mL and a volume of 15 mL.
9. Calculate the volume of a liquid with a density of 5.45 g/mL and a mass of 65 g.
10. A teacher performing a demonstration finds that a piece of cork displaces 23.5
mL of water. The piece of cork has a mass of 5.7 g. What is the density of the
cork?
11. A carver begins work on the following block of granite that weighs 2700g. What is
the density of the granite?
12. A solid magnesium flare has a mass of 1300 g and a volume of 743 cm3. What is
the density of the magnesium?
13. A graduated cylinder has a mass of 50 g when empty. When 30 mL of water is
added, the graduated cylinder has a mass of 120 g. If a rock is added to the
graduated cylinder, the water level rises to 75 mL and the total mass is now
250g. What is the density of the rock?
14. The mass of a toy spoon is 7.5 grams and its volume is 3.2 mL. What is the
density of the toy spoon?
15. A mechanical pencil has the density of 3 grams per cubic centimeter. The volume
of the pencil is 15.8 centimeters. What is the mass of the pencil?
16. A screwdriver has the density of 5.5 grams per cubic centimeter. It also has the
mass of 2.3 grams. What is the screwdriver’s volume?
17. A student performs an experiment with three unknown fluids and obtains the
following measurements:
Fluid A: mass = 2060 g
volume = 2000 mL
Fluid B: mass = 672 g
volume = 850 mL
Fluid C: mass = 990 g
volume = 1100 mL
Draw how the fluids would be layered if they were combined in a beaker.
18. Use your density skills to find the identity of the following mystery objects.