Density as a Constant
Date: __________
Name: __________________________ WS#
Color: ____________
Directions: Pick up 14 pieces of paper. Each piece will represent one molecule of matter (mass).
Let’s say that the first box drawn below occupies 8.0 cc of space (volume). Glue 8 pieces of
paper into that box.
1. If this box has a volume of 8.0 cc and a mass of 8.0 g,
what is its density (show your work)?
D = M/V
2. If I cut the first box in half, what would its volume be? _____________
3. If I cut it in half, it would lose half of its molecules (mass). What would the new mass be?
Use a ruler and draw a box half of the size of Box 1 and glue half the amount of molecules in it.
4. If this box has a volume of 4.0 cc and a mass of 4.0 g,
what is its density (show your work)?
D = M/V
5. If I cut the second box in half, what would its volume be? _____________
6. If I cut it in half, it would lose half of its molecules (mass). What would the new mass be?
Use a ruler and draw a box half of the size of Box 2 and glue half the amount of molecules in it.
7. If this box has a volume of 2.0 cc and a mass of 2.0 g,
what is its density (show your work)?
D = M/V
Conclusion:
1. What can you conclude about density?
2. Imagine the man in the picture curled his legs to his chest; would he still float? __________
3. Explain why the same man, made of the same material, having the same mass can float in
the picture above?
4. What is the density of water? __________
5. Relative to water, what do you think the densities of the objects in the figure below are?
Density:
1
2
1. ___________
2. ___________
3
3. ___________
6. Do icebergs float or sink? _________
7. What is the density of ice? ___________
8. What does that say about an iceberg? __________________________________
9. In the three glasses of water below, draw a cube with the following densities:
0.7 g/mL
6.2 g/mL
0.2 g/ml
10. What is the rule for floating objects? ___________________________________________
Show your work on the following:
11. The density of a substance is 1.63 g/mL. What is the mass of 0.25 L of the substance in
grams?
12. What is the mass of a 450 cm³ block of silicon if the density of silicon is 2.336 g/cm³?
13. Two liquids, A and B, have densities 0.75 g/mL and 1.14 g/mL respectively. When both
liquids are poured into a container, one liquid floats on top of the other. Which liquid is on
top?
14. The density of pure solid copper is 8.94 g/mL. What volume does 5 kg of copper occupy?