Density Definition and Equation Examples

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Presentation transcript:

Density Definition and Equation Examples Methods of Determining Density Exercises

Definition and Equation mass M density = D = V volume Density is the mass per unit volume of an substance or material. SI Units kg m-3 g cm-3 Density in g cm-3 x 1000 kg m-3 M V D

Method 1: Regularly-shaped Object 1. Measure mass using a balance.

Method 1: Regularly-shaped Object 2. Measure the dimensions necessary to find the volume and then calculate the volume.

Formulas for Volume of Regularly-shaped Object Volume of a cuboid = w x d x h = A x width Volume of cube = s3

Method 1: Regularly-shaped Object 3. Determine the density by dividing the mass by the calculated volume.

Example 1

Example 2

Example 3 The wooden block as shown has a mass of 1.50 g. What is the density of this wood?

Density and the Movies