chapter 3.4
DESCRIPTION
Chapter 3.4. Density The ratio between the object’s mass and its volume. SI Units. Symbol. Base Unit. Abbrev. Quantity. Length. l. meter. m. Mass. m. kilogram. kg. Volume. v. cm 3. cubic centimeter. Temp. T. kelvin. K. Density. Density = - PowerPoint PPT PresentationTRANSCRIPT
DENSITYThe ratio between the object’s mass and its
volume.
Chapter 3.4
SI Units
Quantity Base Unit
Abbrev.
Length
Mass
Volume
Temp
meter
kilogram
cubic centimeterkelvin
m
kg
cm3
K
Symbol
l
m
v
T
Density
Density =
Density is a characteristic (physical) property that depends only on the composition of a substance, not on the size of the sample. The composition of a mixture can vary
therefore the density can vary. D =
MV
MassVolume
DensityM
ass
(g)
Volume (cm3)
Δx
Δyslope D
V
M
A copper penny has a mass of 3.1g and a volume of 0.35 cm3. What is the
density of copper?
Sample Problem 3-5
Density = mass volume
Density = 3.1g 0.35 cm3
= 8.8571 g/cm3
= 8.9 g/cm3