properties of matter physical and chemical

PROPERTIES OFMATTER

PHYSICAL AND CHEMICAL

PHYSICAL PROPERTIES:

can be used: -to identify a material, -to choose a material for a specific purpose, -to separate the substances in a mixture

EXAMPLES OF PHYSICALPROPERTIES

VISCOSITYThe tendency of a liquid to keep from flowing: RANK IN ORDER ofIncreasing viscosity.

CONDUCTIVITYA materials ability to allowheat to flow through it.Rank in order of increasingConductivity.

MALLEABILITYThe ability of a solid to be hammered without shattering.Rank in order of increasing malleability.

Melting or Boiling PointThe temperature at which the stateOf matter changes (solid to liquid, Liquid to gas.) Which has a higher melting point?

DENSITY ratio between mass and volume. Can be used to test purity, sinceall substances have specific, unchanging densities. It is ameasure of how much mass is ina certain volume.

CHEMICAL PROPERTIESAny ability to produce aChange in the compositionOf matter. Can be observedwhen substances are changing into different substances.

EXAMPLES:FLAMMABILITY-ability to Burn in the presence of oxygen.

REACTIVITY-how readily a substance combines chemicallywith other substances.

HOW TO RECOGNIZEA CHEMICAL CHANGE A NEW substance will ALWAYS be formed.Change in color –Production of a gasFormation of a precipitateChange in energy (heat or light)

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OR CHEMCIAL CHANGE????

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