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1 kg of feathers . 1 kg of stone. Which do you think would have the greater volume and mass?. OR. Objectives. The students should be able : To conclude that density is one of the properties of matter To analyze the effect of mass and volume to the density of a matter - PowerPoint PPT Presentation
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Which do you think would have the greater volume and mass?
1 kg of feathers 1 kg of stoneOR
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Objectives• The students should be able :1. To conclude that density is one of the
properties of matter2. To analyze the effect of mass and volume
to the density of a matter3. To determine the density of a matter4. To apply the concept of density in daily
life
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Density is defined as mass per unit volume. It is a measure of how tightly packed and how heavy the molecules are in an object. Density is the amount of matter within a certain volume.
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Proof that water and ice have different densities
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To find the Density
Measured the volume of liquid
Volume of water = 720 ml
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Measured the volume of stone
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Measured the mass of stone
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To find the density1- Find the mass of
the object
2- Find the volume of the object
3- Divide Density = Mass
Volume
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Units for density g/cm3 or g/ml
Formula: m = mass V= volume D = density
m= D x V V = m / D D = m/ V
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1) Find the mass of the object2) Find the volume of the object3) Density = Mass : Volume
To find density:
Example:
If the mass of an object is 35 g and it takes up 7 cm3 of space, calculate the density !
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1) Find the mass of the object2) Find the volume of the object3) Density = Mass : Volume
To find density:
Set up your density problems like this:Given: Mass = 35 g
Volume = 7 cm3
Unknown: Density (g/ cm3)
Formula: Density = Mass : Volume
= 35 g : 7 cm3
= 5 g/cm3
Ex. If the mass of an object is 35 g and it takes up 7 cm3 of space, calculate the density !
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• The density of matter is denoted with ρ .• The density is defined as the ratio of mass
and volume• Equation of density is :
Vm
Where : ρ = density ( kg/m3)m = mass ( kg )V = volume (m3)
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The layer sequence based on its density
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Conclusions
The density is not influenced by the mass and volume of the matter
The same matters have the same density too. Different matters have different density either The density is defined as the ratio of mass and
volume Equation of density is :
Vm
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