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Density. A lesson on integrity and science. So Remember:. Density: mass per unit volume A measure of how compact molecules are in a substance. Determines whether an object will sink or float in a fluid. Archimedes Principle. - PowerPoint PPT Presentation
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Density
A lesson on integrity and science
So Remember:
Density: mass per unit volume
A measure of how compact molecules are in a substance.
Determines whether an object will sink or float in a fluid.
Archimedes Principle
There is a relationship between an object being able to float
(or buoyancy )
and the mass of the fluid that was displaced.
This box is filled with water
The object displaces some of the water
The amount of the fluid displaced depends on the density of the object
versus the density of the fluid.
Solid Liquid Gas
For example: Density of water is 1 g/ml.
Wood has a density of 0.6 g/ml;
Therefore, wood floats in water.
Formula for Density
Density = mass / volume
or
D = m/v.
So now, let’s calculate the density for the Coke and Diet Coke.
1. Mass the Coke on the balance.
2. Then divide it by the volume
(ml on the can)
3. Your final answer will be the density.
When you write density, the unit you use is
(the number) g/ml
For example: 3.4 g/ml