UNIT # 1 Introduction Objectives Reading 1.1 Metric System 1.2 1.3 Scientific Notation 1.4 Dimensional Analysis 1.5 1.6 1.7 1.8 Problems 1 | 2 | 3

MEASUREMENT

1.8 - Density

Density is a property due to the nature of a particular material. The density of a particular material is not dependent on the amount of the material examined. Therefore, density is a characteristic property. It is a ratio of the mass of an object to its volume. The mathematical equation is

Density is a property that must be computed from measurements. In the lab, the mass is usually measured by weighing the material on a balance. For a liquid, the volume is usually measured using a measuring device called the graduated cylinder.

Typical units of density measurements are:

• for solids, g/cm3
• for liquids, g/mL
• for gases, g/L

Section 2.1
Matter and Its Characteristics ..p14

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