Notes

The student will: Accurately measure the mass and

volume of a substance using the proper measuring devices

Demonstrate how the density of a substance is determined

Describe how density can be used to determine the identity of a substance

General PropertyPhysical PropertyCharacteristic PropertyDensity

Observable or measurable property of matter. Mass and Volume All matter has Mass & Volume

Any observable property of matter. Color Texture Hardness Luster Etc.

A physical property that is unique to the substance, A characteristic property can be used to identify the substance▪ Density▪ Boiling Point▪ Melting Point▪ Reactivity

Density is a Characteristic Property it is a unique characteristic of a substance

The density of a substance is constant and is not dependent on the shape or size .

Determined by the spacing between the particles as well as mass of the particles themselves In general solids are more dense than liquids

Gasses are much less dense than liquids

The density of water (H2O)

▪1 g/cm3 = 1 g/mL ▪ If a substance has a density less than water it will float no matter what its weight.

The ratio of the mass of a substance to the volume of a substance

D = m/V

When a liquid, density is written as grams per milliliter (g/mL)

When a solid, density is written in grams per cubic centimeter (g/cm3)

Calculate the Mass of the substance (g)

▪ Calculate the volume of the substance (cm3)

▪ Apply the formula for density (D=m/V)▪ Write density as g/cm3

Calculate the mass of the full container (mf)

Calculate the mass of the empty container (me)

Subtract the empty mass from the full mass to calculate the mass of the liquid mf–me=ml

▪ Apply the formula for density (D=m/V)▪ Write density as g/mL