1. MEASUREMENT
Part4

2. DENSITY
Density is the amount of mass per unit of volume.

3. Finding the Density 1) Find the mass of the object.
2) Find the volume of the object.
3) Use the formula to find the density: D = M/V M D V

4. How to Label Density
The units for density should always be a mass unit over a volume unit.
Examples: g/mL, kg/L, g/cm3, kg/m3

5. Example Problem What is the density of this block? D = M/V
M = 200g
V = 5cm x 5cm x 3cm = 75cm3
D = M/V
D = 200g/75cm3
D = 2.67 g/cm3

6. Practice Problems
What is the density of a material with a volume of 3m3 and a mass of 500g?
Answer: g/m3
What is the density of a liquid with a volume of 55mL and a mass of 100g?
Answer: g/mL

7. Which liquid has the greater density?
Liquid #1: m = 20g v = 9.4mL
Liquid #2; m = 10g v = 16mL
Answer: #1 = 2.13 g/mL
#2 = 0.63 g/mL
Answer #1 has the greater density.