mass volume - johnston county
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Math 3 Unit 4 Lesson 3 mass volume density Notes
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April 10, 2018
Sep 22-6:31 AM
Warm Up
1. The volume of a rectangular prism is 150 cm3. If the length is 5 cm and the width of the
base is 12 cm, what is the height of the prism?
2. Find the volume.
3. Find the radius of a cylinder if the height 3.
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Mass, Volume, & Density
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MassMeasurement of the amount of matter (or stuff) in an object
Measured in grams (g)
There are 3 states of matter:Solid
LiquidGas
There are 3 states of matter:Solid
LiquidGas
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Volume
Measurement of the amount of space an object takes upMeasured in milliliters (ml) or cm3
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To find the density
3- Divide Density = Mass g Volume cm³
1- Find the mass of the object
2- Find the volume of the object
1- Find the mass of the object
ALWAYS REMEMBER UNITS!
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Find the mass of the object
Find the volume of the object
Divide : Density = Mass - Volume
To find density:
Ex. If the mass of an object is 35 grams and it takes up 7 cm3 of space,
calculate the density.
Math 3 Unit 4 Lesson 3 mass volume density Notes
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April 10, 2018
Sep 18-9:54 AM
� Find the mass of the object
� Find the volume of the object� Divide : Density = Mass - Volume
To find density:
Ex. If the mass of an object is 35 grams and it takes up 7 cm3 of space,
calculate the density
Set up your density problems like this:
Given: Mass = 35 grams Unknown: Density (g/ cm3) Volume = 7 cm3
Formula: D = M / V
Solution: D = 35g/7 cm3
D = 5 g/cm3
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1 Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its
density?
2. Frank also has an eraser. It has a mass of 3g, and a volume of 1cm3. What is its
density?
3. Jack has a rock. The rock has a mass of 6g and a volume of 3cm3. What is the
density of the rock?
4. 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?
Practice Problems
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5. A piece of wood that measures 3.0 cm by 6.0 cm by 4.0 cm has a mass of 80.0 grams.
What is the density of the wood? Would the piece of wood float in water?
6. I threw a plastic ball in the pool for my dog to fetch. The mass of the ball was 125 grams. What must the volume be to have a density of 0.500 g/mL.
7. An ice cube measuring 5.80 cm by 5.80 cm by 5.80 cm has a density of 0.917 g/mL. What is the mass?
8. Gasoline is a non-polar liquid that will float on water. 450 grams of gasoline is spilled into a puddle of water. If the density of gasoline is 0.665 g/mL, what volume of gasoline is spilled?
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Change Mass AND Keep Volume Same
Increase the mass ���� increase density
Decrease the mass ���� decrease in densityWhich container has more density?
B
Ways to Affect Density
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Change Volume AND Keep Mass Same
Increase the volume ���� decrease density
Decrease the volume ���� increase densityWhich container has more density?
Ways to Affect Density
Sep 18-9:59 AM
Math 3 Unit 4 Lesson 3 mass volume density Notes
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April 10, 2018
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