Matter: Properties of Matter

Chapter 2 Section 2Pp 45-52

All Matter has PropertiesThere are two kinds of properties

in matter• Physical Properties • Chemical Properties

Physical PropertiesPhysical Properties identify a substance• They describe matter

You can use your senses to find physical properties • sometimes you need some equipment

to help!

Some Physical PropertiesColorSizeOdorHardnessShapeTemperature

Some Special Physical PropertiesBoiling Point – the temperature at which a liquid

becomes a gasMelting Point – the temperature at which a solid

becomes a liquidDensity – the ratio of the mass of a substance to the

volume of a substance• D = m/V• Density is equal to the mass divided by the Volume• Units – g/cm3

Boiling Points

Melting Points

Densities

Chemical PropertiesChemical properties describe how

a substance reacts• Reacts with what?• How much/fast does it react?

Some Special Chemical PropertiesReactivity – the ability of a substance

to combine chemically with another substance

Flammability – the ability of a substance to react in the presence of oxygen and burn when exposed to a flame

Flammability and Reactivity

Reac

tivity

Flam

mab

ility

Flammability and Reactivity

Reac

tivity

– So

dium

in W

ater

Flam

mab

ility