density notes with answers
DESCRIPTION
These are notes that I have used in class. This is the teacher handout version.TRANSCRIPT
Physical Science Handout Intro Unit: Measurement
Density
MASS VOLUME DENSITYDefinition The amount of
matter in an objectThe amount of space an object occupies
The amount of compactness of a substance
Units
g, kg cm3, or mL g/cm3 or g/mL
Methods to determine
Weigh on a triple beam balance
Formulas,Water displacement,Graduated cylinder
= m/V
Density of H2O (l) = 1.00 g/mL
(what about precision for density?)
Some common densities
Material Density (g/cm3)
Air 0.001Wood (oak)
0.710
Corn oil 0.925Water 1.00Plastic 1.17
Physical Science Handout Intro Unit: Measurement
Glycerol 1.26Rubber 1.34Corn syrup
1.38
Steel alloy
7.81
So, what will float in water?
Can the densities of materials change?
Density of a material can help identify the substance