Density Practice: Worksheet #1 Calculate density, and identify substances using a density chart. Substance Density Density is a measure of the amount of mass in a certain volume. This physical (g/cm') property is often used to identify and classify substances. It is usually expressed in Gold 19.3 grams per cubic centimeters, or g/cm . The chart on the right lists the densities of Mercury 13.5 some common materials. Lead 11.4 Iron Equation: Density = mass_ or D = m Volume A 7.87 Aluminum 3.7 Bone 1.7-2.0 Gasoline 0.66-0.69 Air (dry) 0.00119 Problem Statement Formula Define Variables Substitution Answer Sample: What is the density of a | D = n M = 250 g D = 250 g 2.5 g/cm billiard ball that has a volume of V = 100 cm' 100 cm' 100 cm and a mass of 250 g? 1. A loaf of bread has a volume of 2270 cm and a mass of 454 g. What is the density of the bread? 2. A block of wood has a density of 0.6 g/cm' and a volume of 1.2 cm'. What is the mass of the block of wood? 3. A 800g boulder has a density of 8 g/cm . What is the volume of the boulder? 4. What is the mass of the block of iron illustrated below? 2 cm 5 cm 10 cm 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) Volume D = m/v Density Substance cm Variable Substitutions (g/cm') 4725 350 D = 4725 D = 13.5 350 Mercury 171 15 148 40 475 250 680 1000