1. Volume
and
Density

2. I. Volume: A measure of the amount of space that a particular object takes up.
A. Volume is often measured in liters (L) for liquids or cubic centimeters (cm3) for solids
1cm3 = 1mL

3. Volume (cont.)
B. When measuring volume in a graduated cylinder you must take the measurement from the bottom of the meniscus

4. II. Density: The mass per unit volume of a substance (g/cm3)
A. Physical Property: A characteristic of a substance that can be measured or observed without changing the composition of a substance
*** Density is a physical property

5. Density (cont.) B. Equations: D=Density V=Volume M=Mass 1. D=M/V
2. M=D x V
3. V= M/D

6. Density (cont.) C. Some common Densities Water: 1.0 g/cm3
Iron: 7.86 g/cm3
Gasoline: .7 g/cm3
Lead: g/cm3

7. Density (cont.)
D. If the density of an object is less than that of water then it will float. If it is more than the density of water then it will sink.