SNC1W - Unit A - Lesson 4 - Measuring Density

Density

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A measure of how much mass is contained in a given volume.

Density = Mass divided by Volume

To calculate Density, we use the equation:

To calculate Mass, we use the equation:

To calculate Volume, we use the equation:

Density is useful in _________ a substance

Different substances have ________ densities at specific temperature ranges

Density is useful to determine if a substance will sink or ____ in a given liquid.

Given:

d = ?
M = 150 g
V = 50 mL

What is the density?

Solution:

d = M/V
d = 150 g / 50 mL
d = 3 g/mL

The density is 3 g/mL.

Given:

M = ?
d = 200 g/mL
V = 5 mL

What is the Mass?

Solution:

d = M/V
M = dV
M = (200 g/mL)(5 mL)
M = 1000 g

The Mass is 1000 g.

Given:

V = ?
M = 150 kg
d = 600 kg/m³

What is the Volume?

Solution:

d = M/V
V = M/d
V = 150 kg / 600 kg/m³
V = 0.25 m³

The Volume is 0.25 m³.