Density

A. Property of matter

B. Physical characteristic of a substance

C. Can be used to identify a substance

D. Ratio of mass to volume for a specific substance

I. What is Density?

A. Density =

B. Units 1. Liquid: g/mL

2. Solid: g/cm3

3. Gas: g/L

II. Density Formula

MassVolume

D

M

V

1 cm3 = 1mL

A. Varies with temperature

B. Inversely proportional to temperature

III. Properties Of Density

A. Water is most dense at 4°C (1.00 g/mL)

B. Water at 100°C is 0.958 g/mL

C. Water at 0°C is 0.999 g/mL

IV. Water

A. What is the density of a substance if the mass is 354g and the volume is 243 mL?

V. Examples

B. Pure lead has the density of 11.34 g/mL. What is the mass of a piece of lead that was placed in a graduated cylinder and the water level rose 5.00 mL?

C. A 34.6g piece of gold was placed in a graduated cylinder containing 25.0 mL. The water rose to 27.4 mL. What is the density of the gold? Is the gold pure if the actual density of gold is 19.3 g/mL?

D. The density of copper is 8.96 g/mL. What is the volume of 19.2g?