Aim: What is Density? Do Now: In your notebooks, explain what you think determines an objects...
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![Page 1: Aim: What is Density? Do Now: In your notebooks, explain what you think determines an objects density? And then, try to explain how you would find an objects.](https://reader036.fdocuments.us/reader036/viewer/2022082510/5a4d1b677f8b9ab0599b16de/html5/thumbnails/1.jpg)
Aim: What is Density?Do Now:
In your notebooks, explain what you think determines an objects density?
And then, try to explain how you would find an objects density (formula/steps/process)?
![Page 2: Aim: What is Density? Do Now: In your notebooks, explain what you think determines an objects density? And then, try to explain how you would find an objects.](https://reader036.fdocuments.us/reader036/viewer/2022082510/5a4d1b677f8b9ab0599b16de/html5/thumbnails/2.jpg)
I. Density: The amount of matter in a specific volume.
- A physical property of matter.- Measured in g/cm3 or g/ml. - Every object has it’s own
unique density.
D = MV
** Density of an object remains the same no
matter how many pieces it’s broken into
**
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Using the one density formula you can rearrange the variables to solve for
mass and volume.
Density MassVolume=Density
Mass =
Density x
Volume
MassVolume=Density
![Page 4: Aim: What is Density? Do Now: In your notebooks, explain what you think determines an objects density? And then, try to explain how you would find an objects.](https://reader036.fdocuments.us/reader036/viewer/2022082510/5a4d1b677f8b9ab0599b16de/html5/thumbnails/4.jpg)
DM
V
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II. Buoyancy vs. Density
• Buoyancy is an objects ability to float in water.
- determines if an object will sink, float or remain neutral in water.
What does neutrally buoyant look like?
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• Which color liquid is most dense?
• Which color liquid is least dense?
• Where would a metal sphere with a density of 3.0g/ml land?
5.4 g/ml -
4.3 g/ml - 2.9 g/ml -
1.3 g/ml -
![Page 7: Aim: What is Density? Do Now: In your notebooks, explain what you think determines an objects density? And then, try to explain how you would find an objects.](https://reader036.fdocuments.us/reader036/viewer/2022082510/5a4d1b677f8b9ab0599b16de/html5/thumbnails/7.jpg)
Example: Compare the density of H2O (water) to the density of an ice cube.
THINKAn ice cube floats in H2O because
it has a density that is…a) Equal to the density of waterb) Greater than the density of waterc) Less than the density of waterd) None of the above
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III. Density of Water and Ice
- As water freezes it expands. (increases volume)
- This make ice less dense than water
Ice always floats the same in water
no matter the size or shape.
ice ice
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IV. Frozen Lakes
- Water is most dense at 4oC in the Liquid phase. Just before it freezes into ice.
ICE
00C
40C
-100C air temp.
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Why does a steel ship float in water?
Densities in grams / cm3D (water) = 1.0 g / cm3D (wood) = 0.8 g / cm3D (steel) = 7.8 g / cm3D (lead) 11.3 g / cm3D (air) .0012 g / cm3Answer:
A ship has a steel shell that is hollow inside. The volume is mostly air. The ship and air together have a density less
than water.
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• Closure:
From the back table, top bin; take a density review worksheet from the top bin to work on in class with your partner using your notes.