DENSITY.

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Chemistry Notes Density. density – the mass of an object per unit volume ex) the density of a substance describes how tightly packed the molecules are.

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Presentation transcript:

DENSITY

Packing It In! What is density? Density is a measure of the amount of matter in a given volume. The density of a substance remains the same no matter how much of the substance you have.

How is density determined? Density is mass divided by volume, or D = m V Common units for expressing density are grams per cubic centimeter, or g/cm3. In water, which has a density of 1 g/mL, objects with density greater than 1 g/mL sink. Objects with density less than 1 g/mL float

Formula for Density

Units for Density Solid---g/cm3 Liquid---g/mL Gas---g/L

Remember!!!! 1cm3=1mL