Density 2013
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Transcript of Density 2013
![Page 1: Density 2013](https://reader035.fdocuments.net/reader035/viewer/2022062312/556d0daed8b42ad34f8b4e30/html5/thumbnails/1.jpg)
You will Need:1)Pencil, Colored Pencil,
Highlighters, Calculator2)Density – 2 pages 4 sides –
Bookshelf- Please staple3) Log #3 – Bookshelf- Update –
Managers Log in4) Power Notes – Physical vs.
Chemical Changes + Cornell Notes – Due Now
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1) Density – Due on Friday – Oct. 18th
2) Binder Check #2 – Due Thur. Oct. 17th at the beginning of class
3) Test #2 – Thur. Oct. 17th- Target Concepts on-line- ½ page of notes front side only done by hand
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Density is a helpful property of matter when trying to distinguish different substances. The value of Density is determined by dividing the AMOUNT of MASS by the AMOUNT of VOLUME for a particular substance.
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The density of water is 1 g/mL. If an object has a density GREATER than “1 g/mL” it will SINK. If the object has a density LESS than “1 g/mL” it will FLOAT. However, if an object has a density EQUAL to “1 g/mL it will FLINK.
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Mass UNIT GRAM or any form of gram…kg, cg, mg
Volume UNIT mL, cc, cm3, m3
L
Density UNIT Combination unitg/mL, g/cc, g/cm3
mass volume
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Substance Describe Unit Label
Method #1
Liquid mL
Method #2
Regular geometric shape
cm3
Method #3
Irregular shaped object
mL, cm3 or cc
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Substance Describe Unit Label
Method #1
Liquid mL
Method #2
Regular geometric shape
cm3
Method #3
Irregular shaped object
mL, cm3 or cc
L x W x H
b x h
a x h
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When working with the density formula you won’t always be finding density.
You can use the “TRIANGLE TRICK” to help figure out how to find the missing quantity (number, variable).
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1) Identify which number values you have by looking at the unit label (mass, volume or density?)
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Mass UNIT GRAM or any form of gram…kg, cg, mg
Volume UNIT mL, cc, cm3, m3
L
Density UNIT Combination unitg/mL, g/cc, g/cm3
mass volume
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2) Place each number into their correct place in the triangle.
Volume Number
Mass Number
Density Number
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3. If you have a top and bottom variable in the triangle – DIVIDE (numerator by denominator) to find the missing variable.
If you have the two variables on the bottom – MULTIPLY them to find the top variable.
Volume Number
Mass Number
Density Number
divide
multiply
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1. Complete all the problems by showing your work.
2. Hint: If the problem is worth more than 5 points you may have to:
1) Solve for Volume First, then Solve for Density
2) Answer a question as well
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1. Binder Check #2 – Due Thursday at the beginning of class
2. Test #2 – ½ page of notes due Thursday. Front side only, done by hand
3. Density – 2 pages 4 sides – Due Friday at the beginning of class.