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DensitySNC1D
What is Density?
Density is a quantitative PHYSICAL property of matter
What is Density?
Density is a quantitative PHYSICAL property of matter
It is the mass per unit volume:
V
mD
What is Density?
Density is a quantitative PHYSICAL property of matter
It is the mass per unit volume:
V
mD measured in g or kg
What is Density?
Density is a quantitative PHYSICAL property of matter
It is the mass per unit volume:
V
mD measured in g or kg
measured in mL or cm3 or m3
Which is heavier?Which is heavier: 1 kg of Feathers or 1 kg of Lead?
Which is heavier?Both weigh the same (1 kg) but the
feathers will take up a lot more space (volume) than the same mass of lead because the lead has a higher density.
Density of Some Common Substances
Substance Density (g/cm3)
Air 0.0013
Feathers 0.0025
Wood(Oak) 0.6 - 0.9
Ice 0.92
Water 1.00 Bricks 1.84
Aluminum 2.70
Steel 7.80
Silver 10.50
Gold 19.30
Practice QuestionA cube of lead that has a mass of 1.0 kg is
4.45 cm on each side. What is the density of the cube?
Practice QuestionA cube of lead that has a mass of 1.0 kg is
4.45 cm on each side. What is the density of the cube?
Practice QuestionA cube of lead that has a mass of 1.0 kg is
4.45 cm on each side. What is the density of the cube?
Practice QuestionA cube of lead that has a mass of 1.0 kg is
4.45 cm on each side. What is the density of the cube?
Practice QuestionA cube of lead that has a mass of 1.0 kg is
4.45 cm on each side. What is the density of the cube?
Practice QuestionA cube of lead that has a mass of 1.0 kg is
4.45 cm on each side. What is the density of the cube?
?:
12.88)45.4)(45.4)(45.4(
0.1:3
DU
cmcmcmcmhwV
kgmG
Practice QuestionA cube of lead that has a mass of 1.0 kg is
4.45 cm on each side. What is the density of the cube?
33 11011.012.88
0.1:
:
3 cm
g
cm
kg orcm
kgDS
V
mDS
Irregular Volumes
The volume of an irregularly shaped object can be determined by measuring the volume of water it displaces.
Irregular Volumes
The volume of an irregularly shaped object can be determined by measuring the volume of water it displaces.
Of course, this only works if the object has a density higher than that of water. . . .
The Density Tower
Objects with a lower density will float on top of liquids with a higher density:
www.youtube.com/watch?v=-CDkJuo_LYs
Another Practice Question
Corn syrup has a density of 1.38 g/mL. What is the mass of the corn syrup in a 1.00 L container?
Another Practice Question
Corn syrup has a density of 1.38 g/mL. What is the mass of the corn syrup in a 1.00 L container?
Another Practice Question
Corn syrup has a density of 1.38 g/mL. What is the mass of the corn syrup in a 1.00 L container?
Another Practice Question
Corn syrup has a density of 1.38 g/mL. What is the mass of the corn syrup in a 1.00 L container?
Another Practice Question
Corn syrup has a density of 1.38 g/mL. What is the mass of the corn syrup in a 1.00 L container?
kgorgmLmS
VDmV
mDS
mU
mLLV
DG
mLg
mLg
38.11380100038.1:
:
?:
100000.1
38.1:
Rearranging
The equation for density can also be rearranged to solve for volume:
D
mV
D
m
D
VD
mVD
VV
mVD
V
mD