MEASUREMENT Part4.

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Presentation transcript:

MEASUREMENT Part4

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

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

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

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

Practice Problems What is the density of a material with a volume of 3m3 and a mass of 500g? Answer: 166.67 g/m3 What is the density of a liquid with a volume of 55mL and a mass of 100g? Answer: 1.82 g/mL

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.