Density Practice Problems
Do Now Questions:
1. a. Define mass:______________________________________________________________
b. What lab tool is used to measure it?___________________________________________
2. a. Define volume:____________________________________________________________
b. What lab tool is used to measure it?___________________________________________
What is the base unit for mass? ___________________ Abbreviation? ______
What is the base unit for volume? ___________________
Abbreviation? ______
How do you find the volume of a cube? ______________________________________________
Circle all units for mass. Square all units for volume (for liquids AND solids)
mL
hg
g
cm3
cg
lbs
ft
°F
dag
cL
°C
s
km3
dg
mm3
dm3
cm
L
N
kg
mg
hL
hm3
m3
Directions: Follow the format of the sample question. You must have correct UNITS and follow the
same procedure for each question.
Sample question: Mass = 10g
Volume = 2cm³
Density = ???g/cm³
Equation: D=M/V
Substitution: D=10g/2cm³
Solution: D=5g/cm³
1. Mass = 50 g
Volume = 10 cm³
Density = ???g/cm³
Volume = 25 cm³
Density = 3 g/cm³
Equation:
Substitution:
Solution:
2. Mass = ???g
Equation:
Substitution:
Solution:
3. Mass = 48 g
Equation:
Volume = ???cm³
Density = 8 g/cm³
Volume = 4.1 cm³
Density = ???g/cm³
Volume = ???cm³
Density = 4.5 g/cm³
Substitution:
Solution:
4. Mass = 14.76 g
Equation:
Substitution:
Solution:
5. Mass = 85.5g
Equation:
Substitution:
Solution:
6. The mass of an object is increased from 2g to 4 g. The volume stays the same. Would the density
increase or decrease? _________________________
(Hint: Think about the numerator and denominator of a fraction)
7. The volume of an object is increased from 5 cm³ to 10cm³. The mass stays the same. Would the
density increase or decrease? _________________________
8. The mass of an object is decreased from 4 g to 2 g. The volume stays the same. Would the
density increase or decrease? ________________________
9. The volume of an object is decreased from 10cm³ to 5 cm³. The mass stays the same. Would the
density increase or decrease? _________________________
10. Object A is 3.5g/cm³. Object B is 2g/cm³. Object C is 5.5g/cm³. List the object from most dense
to least dense. __________________,_____________________,___________________
Calculate the densities of the following objects. Remember to place units after each number.
11. Object A  length = 6cm
width=3cm
Volume=________________________
12. Object B length = 10m
mass= 36g
Density=__________________________
width=5m
Volume=________________________
height=1cm
height=2m
mass= 300g
Density=__________________________
13. Object CGraduated cylinder with water: 50mL
Volume=________________________
Graduated cylinder with water and object: 60mL
Density=__________________________
mass: 2g