2. Objectives: Identify six examples of physical properties of matter. Describe how density is used to identify substances. List six examples of physical changes. Explain what happens to matter during a physical change.
4. Identifying Matter You use physical properties to identify matter. Density amount of matter in a given space, or volume. The two balls below have different densities. Liquid Layers This graduated cylinder contains six liquids. Each liquid is a different density so the liquids form layers.
5. Density of Solids Knowing the density of a substance can also tell you what kind of substance it is. Solving for Density To find an objects density (D), first measure its mass (m) and volume (V). Then use the following equation: D = m/V
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7. Using Density to Identify Substances Look at the table below to compare densities of several common substances.
