Editing revision 22 of DensityNotes

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'''''Density''''' is a measure of the quantity of mass of a substance that occupies one unit of volume.

Remember: Changes in temperature and pressure have little effect in the densities of ''liquids and solids.''

Also: generally an increase in temperature will increase the volume of the sample while the mass remains constant, thus the density will decrease

;;Density= mass:volume

Density's units are ''grams/liters'' '''or''' ''grams/centimeters cubed''

''Formula'' for determining Density:

#determine which part is missing and which part you know (i.e. either the mass, volume, or density is what you are trying to determine)
#write out the formula that you need to use (Density= mass/volume)
#plug the numbers you are given into the formula and write a constant for the part you are trying to determine
#multipy or divide to determine the answer
#check to make sure you have the right answer in the right units with the correct number of significant figures!

'''Example'''

''Question:''
A piece of lead has a mass of 22.7 grams and occupies a volume of 2.00 liters. What is the density of the lead?

''Solution:''
*Write out the formula
;;Density=mass:volume
*Plug in the numbers
;;X=22.7 grams:2.oo liters
*Now solve for X:
X=11.4 grams/liters

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