Introduction to Matter Lecture: Calculating Density.

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Presentation transcript:

Introduction to Matter Lecture: Calculating Density

Introduction to Matter A solid is a substance that has a definite shape and volume.

Introduction to Matter Density: The amount of mass per volume of an object. D = m / V D= Density m= mass V= Volume

Introduction to Matter Density Units. Solids: g/cm 3 Liquids and gases: g/ml

Introduction to Matter Calculating Density A small block of wood floats on water. It has a mass of 200 g and a volume of 250 cm 3. What is the density of the wood? Read and Understand What information are you given? Mass of block = 200 g Volume of block = 250 cm 3 - Measuring Matter

Introduction to Matter Calculating Density A small block of wood floats on water. It has a mass of 200 g and a volume of 250 cm 3. What is the density of the wood? Perform the calculation. Density = Mass/Volume = 200 g/250 cm 3 = 0.80 g/cm 3 - Measuring Matter

Introduction to Matter Calculating Density Practice Problem A sample of liquid has a mass of 24 g and a volume of 16 mL. What is the density of the liquid? 1.5 g/mL - Measuring Matter

Introduction to Matter Calculating Density Practice Problem A piece of solid metal has a mass of 43.5 g and a volume of 15 cm 3. What is the density of the metal? 2.9 g/cm 3 - Measuring Matter