Density

A. Property of matterB. Physical characteristic of a substanceC. Can be used to identify a substanceD. Ratio of mass to volume for a specific

substance

I. What is Density?

A. Density =

B. Units 1. Liquid: g/mL2. Solid: g/cm3

3. Gas: g/L

II. Formula

MassVolume

D

M

V

1 cm3 = 1mL

A. Density varies with temperatureB. Density is inversely proportional to

temperature

III. Properties

A. Water is most dense at 4°C (1.00 g/ml)B. Water at 100°C is 0.958 g/mLC. Water at 0°C is 0.999 g/mL

IV. Water

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

V. Examples

B. Pure lead has the density of 11.34 g/mL. What is the mass of the lead if a piece of lead was placed in a graduated cylinder and the water level rose 5 mL?

C. A 34.6 g 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?