Density.

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Presentation transcript:

Density

What is Density Density is a characteristic property of an object that describes the relationship between the object’s mass and volume The formula to calculate density is: Density = Mass ÷ Volume

The Density Triangle of Science To remember the formula for density use the density triangle: D M V

This line represents ÷ This line represents x D M V

Using the Density Triangle to Find … To find density: You need mass and volume Write your formula starting with what you are looking for: D = Now read your triangle: D = M ÷ V D M V

Using the Density Triangle to Find … To find Mass: You need density and volume Write your formula starting with what you are looking for: M = Now read your triangle: M = D x V D M V

Using the Density Triangle to Find … To find Volume: You need density and mass Write your formula starting with what you are looking for: V = Now read your triangle: V = M ÷ D D M V

Complete the Formula D = . V M = _________ _______ = M M ÷ V = D D M V

Units for Density The units depend on the units for the mass and volume Example: Mass = grams, Volume = Litres Density = grams ÷ litres = g/L

Density How-To ***Density of Water = 1g/ml*** Regular Irregular Liquid Unit Mass weigh Liquid mass g Volume L x w x h Water displacement Measure grad. cyl. mL or cm3 Density Weight Water dis. Liq. Mass Vol. G.C. g/mL or g/cm3