DensityThis is a featured page

Definitions:
  • Density-A measure of mass per volume.
  • Mass-The amount of matter and energy an object contains.
  • Volume-The amount of space an object takes up
Notes:

  • The formula for density is mass divided by volume.
  • A more dense object, such as iron, will have less volume than an object of equal mass, such as an equal amount of a less dense material, such as water.
  • For a rectangular solid, the formula Mass/(Length x Width x Height). For an irregularly shaped solid, displacement of liquid can be used.
  • A device for measuring density is a pycnometer.
  • Everyday Example: Anything with mass and volume
Formula

M=Mass

D=Density

V=Volume
Density - Interactive Phun Curriculum

Units
Kilograms per cubic meter (kg/m(cubed)

Highest Known Density:

Neutron Star matter

Highest Density on Earth:
Iridium (Density of 22, 650 kilograms per cubic meter)

Least Dense Solid:

Aerogel (3)

Relevant website:
Whiteboard Video Density Whiteboard Problems

SAMPLE PROBLEM:
A block of lead has the dimensions of a 4.5cm by 5.2cm by 6.0cm. The block weighs 1.578kg. From this information calculate the density of lead in g/cm cubed.
v=l x w x h =4.5 x 5.2 x. 6
=140.4cm cubed
D=?
M=1587g
V=140.4 cm cubed

D=M / V
=1587g / 140.4 cm cubed

=11.30 g/cm cubed
Graph showing density of a plasma jet


kl19917
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19842rm density 0 Dec 15 2006, 10:45 AM EST by 19842rm
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nice page guys like it keep it up 19842rm
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mr27849 IPC 0 Dec 14 2006, 10:49 AM EST by mr27849
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good job keep doing what you'r doing
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cg22899 density 0 Dec 13 2006, 12:30 PM EST by cg22899
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cool density site
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