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Density

Density. What is density?. Density is a comparison of how much matter there is in a certain amount of space. Which one is more dense?. Demonstration: People in a square How about this: Which square is more dense?. Which one is more dense?. Now which one is more dense?. What is density?.

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Density

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  1. Density

  2. What is density? • Density is a comparison of how much matter there is in a certain amount of space.

  3. Which one is more dense? • Demonstration: People in a square • How about this: Which square is more dense?

  4. Which one is more dense? • Now which one is more dense?

  5. What is density? • Density = mass OR mass ÷ volume. volume • Units for density: g . cm3 • Why are these the units for density? ALWAYS REMEMBER UNITS!

  6. Let’s try a density problem together • Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density? • Frank also has an eraser. It has a mass of 3g, and a volume of 1cm3. What is its density?

  7. Work on these problems with your neighbor. • Jack has a rock. The rock has a mass of 6g and a volume of 3cm3. What is the density of the rock? • Jill has a gel pen. The gel pen has a mass of 8g and a volume of 2cm3. What is the density of the rock?

  8. Now, try these on your own. • Al’Licia has a watch. It has a mass of 4g and a volume of 2cm3. What is the density of the watch? • Mia has a wallet. It has a mass of 15g and a volume of 5cm3. What is the density of the wallet?

  9. Liquid Layers • If you pour together liquids that don’t mix and have different densities, they will form liquid layers. • The liquid with the highest density will be on the bottom. • The liquid with the lowest density will be on the top.

  10. Liquid Layers • Look at our columns • These were the liquids Lamp oil Rubbing Alcohol Vegetable oil Water Dish soap Karo syrup Honey Honey

  11. Liquid Layers • What does this tell you about the density of the liquids?

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