What is Density? The ratio between the mass of an object and the volume of the same object In other words, it tells you how much matter an object has within.

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What is Density? The ratio between the mass of an object and the volume of the same object In other words, it tells you how much matter an object has within a given amount of space (volume) Each element has a specified density. For example: platinum = 21.4g/ml and silver = 10.5g/cm3 1 ml = 1 cm3

More on Density Density is a ‘physical’ property of matter. It is a characteristic that applies to a specific substance, such as odor, color, and texture. The density of a pure substance never changes, except for gases. Physical properties that do not depend on ‘how much’ you have of the substance are called intensive properties, such as density A physical property that depend on the amount of substance is called an extensive property.

Definitions Mass = how much matter a substance has Volume = how much space the substance takes up Density = how packed the matter is

Determining Density Take the mass of the object and divide by the volume Mass volume Example: An object with a mass of 20 grams and a volume of 10 milliliters has a density of 2g/ml. 20g = 20g ÷ 10ml = 2g/ml 10ml The answer 2g/ml is read 2 grams per one milliliter.

D. Density V = 825 cm3 D = 13.6 g/cm3 M = ? An object has a volume of 825 cm3 and a density of 13.6 g/cm3. Find its mass. GIVEN: V = 825 cm3 D = 13.6 g/cm3 M = ? WORK:

D. Density A liquid has a density of 0.87 g/mL. What volume is occupied by 25 g of the liquid? GIVEN: D = 0.87 g/mL V = ? M = 25 g WORK:

Calculate Mass= 4.53 kg and volume= 225 cm3 Mass= 122.4 g and volume=5.5 ml Find the mass if the density is 2.14g/cm3 and the volume is 8cm3 8cm3 2.14g = 1 cm3