Slide 1 of 25 Density 3.4 Copyright Pearson Prentice Hall Slide 2 of 25 Density > Determining Density Density is the ratio of the mass of an object to its volume. 3.4 m vD Copyright Pearson Prentice Hall Slide 3 of 25 Density > Determining Density Each of these 10-g samples has a different volume because the densities vary. 3.4 Copyright Pearson Prentice Hall Slide 4 of 25 Density > Determining Density Density is an intensive property that depends only on the composition of a substance, not on the size of the sample. 3.4 Copyright Pearson Prentice Hall Slide 5 of 25 Density > Determining Density The density of corn oil is less than the density of corn syrup. For that reason, the oil floats on top of the syrup. 3.4 Slide 6 of 25 Copyright Pearson Prentice Hall Density > Density and Temperature Experiments show that the volume of most substances increases as the temperature increases. Meanwhile, the mass remains the same. Thus, the density must change. The density of a substance generally decreases as its temperature increases. 3.4 Copyright Pearson Prentice Hall SAMPLE PROBLEM Slide 7 of Copyright Pearson Prentice Hall Slide 8 of 25 Practice Problems Problem Solving 3.47 Solve Problem 47 with the help of an interactive guided tutorial. for Sample Problem 3.10 Copyright Pearson Prentice Hall SAMPLE PROBLEM Slide 9 of Copyright Pearson Prentice Hall Slide 10 of 25 Practice Problems Problem Solving 3.48 Solve Problem 48 with the help of an interactive guided tutorial. for Sample Problem 3.11 Copyright Pearson Prentice Hall Slide 11 of 25 Section Quiz -or- Continue to: Launch: Assess students understanding of the concepts in Section Section Assessment 3.4 Copyright Pearson Prentice Hall Slide 12 of If 50.0 mL of corn syrup have a mass of 68.7 g, the density of the corn syrup is a g/mL. b g/mL. c.1.36 g/mL. d.1.37 g/mL. 3.4 Section Quiz Copyright Pearson Prentice Hall Slide 13 of What is the volume of a pure gold coin that has a mass of 38.6 g? The density of gold is 19.3 g/cm 3. a cm 3 b.2.00 cm 3 c.38.6 cm 3 d.745 cm Section Quiz Copyright Pearson Prentice Hall Slide 14 of As the temperature increases, the density of most substances a.increases. b.decreases. c.remains the same. d.increases at first and then decreases. 3.4 Section Quiz END OF SHOW