Presentation on theme: "C.4.A: Chemical and Physical C.4.B: Intensive versus Extensive"— Presentation transcript:
1 C.4.A: Chemical and Physical C.4.B: Intensive versus Extensive Properties of MatterC.4.A: Chemical and PhysicalC.4.B: Intensive versus Extensive
2 Properties of MatterRemember that Matter is anything that has both mass and volume (ie…takes up space)Properties are characteristics that enable us to distinguish one kind of matter from another.
3 Physical PropertiesPhysical properties can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter.Examples of Physical PropertiesOdorColorDensity - The mass of a substance divided by its volumeLuster - How shiny a substance is.Malleability - The ability of a substance to be beaten into thin sheets.Ductility - The ability of a substance to be drawn into thin wires.
4 Physical Properties cont. More Examples of Physical PropertiesHardness - How easily a substance can be scratched.Melting/Freezing Point - The temperature at which the solid and liquid phases of a substance are in equilibrium.Boiling Point - The temperature at which the vapor pressure of a liquid is equal to the pressure on the liquidConductivity - The ability of a substance to allow the flow of energy or electricity.
5 Chemical PropertiesChemical properties of matter describe its "potential" to undergo some chemical change or reaction by virtue of its composition. These properties cannot be tested with changing the composition of the substances.Examples of Chemical PropertiesReactivity – The ability of a substance to undergo a chemical reactionIonization – The ability of a substance to exhibit a positive or negative charge.Combustibility – The ability for a substance to burn
6 Intensive PropertiesIntensive Properties – Properties of matter that are not dependent on the amount of matter.Examples of intensive propertiesTemperatureColorHardnessmelting pointboiling pointpressuredensity
7 Extensive PropertiesExtensive Properties – Properties of matter that are dependent on the amount of matter.Examples of extensive propertiesMassVolumeLength
8 DensityDensity is the measurement of how tightly packed matter is. Since the amount of matter is mass and the space it occupies is volume, we can calculate the density of matter using the following equation:Mass is measured in grams (g). Volume is measured in units of length cubed (cm3) or units of volume (mL). Either can be used because one milliliter is defined as one cubic centimeter (cm3).MassDensity =Volume
9 VolumeThe volume of an object is calculated by multiplying the measurements of length, height, and width. What happens when the object is irregular in shape and length, height, or width cannot be measured using a ruler?The technique most commonly used is water displacement. By finding the volume of water that is displaced by the matter the volume of the matter can be determined because it is the matter displacing the water.