Density

Density

Multiple Choice

Warm Up: You have a globe that has a radius of 11 inches. Find the volume of your globe.

• 523 in³

• 16,717 in³

• 5,575 in³

• 7,235 in³

Density

Density is the measurement of mass per volume.

 $D=\frac{m}{V}$  

 $m=DV$  

 $V=\frac{m}{D}$  

An object has a mass of 62 g. It is in the shape of s rectangular prism with dimensions of 4 cm by 2.5 cm by 2 cm. What is the density of the object?

• Calculate the volume: V = lwh

• V = (4)(2.5)(2) = 20 cubic cm

• m = 62 g

•  $D=\frac{m}{V}=\frac{62}{20}=3.1\frac{g}{cm^3}$  

Multiple Choice

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 mL
• 7 g/cm³
• 28 g/cm³
• 1/7 g/cm³

The density of a diamond is 3.52 g/cubic cm. If the volume of the diamond is 0.2 cubic cm, what is the mass of the diamond?

• D = 3.52 V= 2

•  $m=DV$  

•  $m=\left(3.52\right)\left(0.2\right)=\ 0.704\ g$  

Multiple Choice

Gold has a density of 19.32 g/ cubic cm. If the volume of the gold is 11 cubic cm, what is the mass?

• 1.77 g

• 0.57 g

• 173.88 g

• 212.52 g