Density What is density l Density is a

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Density

Density

What is density? l Density is a comparison of how much matter there is

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

Which one is more dense? l Demonstration: People in a square l How about

Which one is more dense? l Demonstration: People in a square l How about this: Which square is more dense?

Which one is more dense? l Now which one is more dense?

Which one is more dense? l Now which one is more dense?

What is density? l Density = mass OR volume mass ÷ volume. l Units

What is density? l Density = mass OR volume mass ÷ volume. l Units for density: g cm 3 l Why are these the units for density? ALWAYS. REMEMBER UNITS!

Let’s try a density problem together l Frank has a paper clip. It has

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

Work on these problems with your neighbor. l Jack has a rock. The rock

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

Now, try these on your own. l Al’Licia has a watch. It has a

Now, try these on your own. l Al’Licia has a watch. It has a mass of 4 g and a volume of 2 cm 3. What is the density of the watch? l Mia has a wallet. It has a mass of 15 g and a volume of 5 cm 3. What is the density of the wallet?

Liquid Layers l If you pour together liquids that don’t mix and have different

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

Liquid Layers l Look at our columns l These were the liquids Lamp oil

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

Liquid Layers l What does this tell you about the density of the liquids?

Liquid Layers l What does this tell you about the density of the liquids?