Not the same as heat!!!

HeatTemperature  Form of energy  Quantity of energy within a system  Heat flows from higher temp to lower temp  Measure of intensity of heat  SI unit for temp is Kelvin  No degree symbol for Kelvin KK  K, °C, °F

Mixture  Retain individual properties  May be physically separated Filtrationsolids from suspension Magnetmagnetic Centrifugesuspended from solution Siftlarge from small Distillationsolvent from solution Fractional distillationseparate alcohol Chromatography colors Electrophoresismolecules based on size Evaporationsolute from solution

Element  Can not be broken down  Found on the periodic table  Simplest form  Building block of all substances

Compound  Combination of two or more elements  Can not be separated by physical means  Do not retain properties of their individual elements

Molecule  Smallest uncharged individual unit of a compound  Formed by two or more atoms joined together  Water  All compounds are molecules but not all molecules are compounds

Mixture  Homogeneous  Uniform  Heterogeneous  Two or more phases

Properties PhysicalChemical  Color  Taste  Odor  Physical existence  State of matter  Mp  Density  Bp  Ability of substance to form a new substance

Changes PhysicalChemical  Changes in physical properties  Change in state of matter  No new substance is formed  New substance is formed  Different set of properties

Intensive PropertiesExtensive Properties  Do not depend on the amount of matter  Color Odor Luster  Malleability  Ductility  Conductivity  Hardness  Melting/Freezing Point  Boiling Point  Density  Depend on the amount of matter  Mass  Weight  Volume  Length