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1.4: Density
Objective:
 Define density as mass/volume.
 Calculate the density of multiple substances.
On Your Desk:
Expectations:
 This packet
 Students will work quiet and respectfully.
 Writing utensil
 Students will raise their hand before speaking.
 Calculator
 Students will sit at SLANT.
 Teacher will respect and encourage all questions.
 Teacher will enforce all rules and expectations.
Do Now:
Look at the aquarium at the front of the room. Explain why one rock is floating, while the other rock is at the
bottom of the aquarium. Use complete sentences.
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Demonstration: Volume and Mass (We do)
1
2
3
4
Do the bags occupy the same amount of space?
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What technical term do we use to describe how much
space something takes up?
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Do the bags have the same weight?
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What technical term do we use to describe how much
something weighs?
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Demonstration: Coca-Cola Simulation (We do)
Volume
Regular
Mass
Volume
Diet
Mass
3
Prediction:
 Which can will float? ________________________________
 Why?
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Density (I do)
Definition
Formula:
Practice (We do/You do)
1. Calculate the densities of the following objects. Remember to place units after each number.
Object A
Length = 6 cm
Width = 3 cm
Height = 1 cm
Mass = 36 g
Object B
Length = 10 cm
Width = 5 cm
Height = 2 cm
Mass = 300 g
Volume = __________________________
Density = __________________________
Show your work!
Volume = __________________________
Density = __________________________
Show your work!
Object C
Use the water displacement method to determine the density of object C.
Initial water level = 25 mL
Final water level after placing object into cylinder = 29 mL
Mass of silly putty = 8 g
Show your work!
4
2. Which of the following materials will float on water (density = 1 g/mL)?
Air = .001 g/mL
Corn Oil = .93 g/mL
Glycerine = 1.26 g/mL
Corn Syrup = 1.38 g/mL
Wood = .85 g/mL
Steel = 7.81 g/mL
Rubber = 1.34 g/mL
Ice = .92 g/mL
Water = 1.00 g/mL
3. Assuming the materials don’t mix, show how the materials would “stack up” in a graduated
cylinder.
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Least Dense
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Most Dense
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