1. Density The make up and structure of all matter!!!

2. Are you dense? Well, you all are… Well, you all are… Because you all have these two properties You are made up of matter …which means you have MASS You all have VOLUME…which means you take up space

3. When You Combine Mass and Volume, you get… Density Density A measure of the amount of matter that occupies a given amount of space SPACE Amount of Matter

4. So now you’re going to say we need more units, right? Right!!! ! Units for Density Units for Density = For a solid: Grams per cubic centimeter g/cm 3

5. What Do All Those Letters Mean?

6. Quick Visual Aid

7. Want to See An Example Question? An unknown object has a mass of 15 grams and a volume of 5 cm 3. What is the density of this object? An unknown object has a mass of 15 grams and a volume of 5 cm 3. What is the density of this object? Density = Mass ÷ Volume Density = 15 grams ÷ 5 cm 3 Density = 3.0 g/cm3

8. Your Turn!!! An unknown liquid has a volume of 6 mL and a mass of 6 grams. What is the density of this liquid? Remember that liquid volumes are given in mL An unknown liquid has a volume of 6 mL and a mass of 6 grams. What is the density of this liquid? Remember that liquid volumes are given in mL Density = Mass ÷ Volume Density = 6 grams ÷ 6 mL Density = 1.0 g/mL

9. How Can We Compare Densities? Well…there are a known set of densities on record throughout the world Well…there are a known set of densities on record throughout the world 1.0 g/mL = 1.0 g/cm 3

10. Buoyancy An object’s ability to float in water Density Greater than 1.0 g/cm 3 = Density Less than 1.0 g/cm 3 =