Name: _________________________ Period: ____________
Density Quiz Study Guide
1. What is density?
A property of matter representing the mass per unit of volume
2. How do you calculate density and what unit is typically used?
Density is equal to mass divided by volume. The unit used for density is typically g/mL or g/cm3.
3. Draw your density triangle:
4. Describe how to determine whether or not an object will float.
Comparing densities will help you determine whether an object will float or not. If the object going into the
liquid has a density that is smaller than the density of the liquid, it will float. If the object going into the liquid
has a density that is greater than the desnity of the liquid, it will sink.
Calculate the following using the 4 step method:
5. What is the density of an object that has a mass of 13.1g and a volume of 15 mL?
1. List your givens:
2. Write the Formula
Plug ‘n Chug
Answer (with units!)
M= 13.1 g
Density = mass/volume
Density = 13.1 g/ 15 mL
0.873 g/mL
V= 15 mL
= 0.873 g/mL
6. A block measures 84.6 cm3 and has a mass of 46g. What would the desnity of this block be? Would it float
in water?
1. List your givens:
2. Write the Formula
Plug ‘n Chug
Answer (with units!)
M= 46 g
Density = mass/volume
Density = 46 g/84.6 cm3
0.544 g/cm3
V= 84.6 cm3
=0.544 g/cm3
7. You are given 2 liquids, liquid A has a density of 3.2 g/mL and liquid B has a density of 2.7 g/mL. If you
mixed these two liquids together, which would sink to the bottom and which would float on top?
If you mixed together liquids A and B, liquid A would sink to the bottom and liquid B would float on top. This is
because the liquid with the higher density will sink while the liquid with the lower density floats.
8. What is the mass of an unknown object that measures 163 cm3 and has a density of 4.2 g/cm3?
1. List your givens:
2. Write the Formula
Plug ‘n Chug
Answer (with units!)
V= 163 cm3
Mass = density x volume
Mass = 4.2 g/cm3 x 163 cm3
684.6 g
D= 4.2 g/cm
3
= 684.6 g
9. What is the volume of an unknown object with a density of 1.36 g/mL and a mass of 5.97g?
1. List your givens:
2. Write the Formula
Plug ‘n Chug
Answer (with units!)
M = 5.97 g
Volume = mass/ density
Volume = 5.97 g /1.36 g/mL
4.39 mL
D= 1.36 g/mL
=4.39 mL