Density Lab Report

MATH S KILLS U SED

Multiplication
Division
Decimals

MATH IN SCIENCE: I NTEGRATED SCIENCE

Density

Calculate density, and identify substances using a density chart.
Density is a measure of the amount of mass in a certain volume. This physical property is often used to identify and classify substances. It is usually expressed in grams per cubic centimeters, or g/cm3. The chart on the right lists the densities of some common materials.
EQUATION:

Densities of Substances
Substance

Density
(g/cm3)

Gold

19.3

Mercury

13.5

Lead

mass density ϭ ᎏ volume 11.4

m
Dϭᎏ
V

Iron

SAMPLE PROBLEM: What is the density of a billiard

7.87

Aluminum

3.7

ball that has a volume of 100 cm and a mass of 250 g?
3
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1. A loaf of bread has a volume of 2270 cm3 and a mass of 454 g. What is the density of the bread?

2. A liter of water has a mass of 1000 g. What is the density of water?
(Hint: 1 mL ϭ 1 cm3)

3. A block of wood has a density of 0.6 g/cm3 and a volume of 1.2 cm3. What is the mass of the block of wood? Be careful!

4. Use the data below to calculate the density of each unknown substance. Then use the density chart above to determine the identity of each substance.
Mass (g)
Example:
4725

Volume (cm3)

Density (g/cm3)

Substance

350

4725 Ϭ 350 ϭ 13.5
__________________

mercury
__________________

a.

171

15

__________________

__________________

b.

148