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PROPERTIES OF MATTER

• Chemical

• Physical

Physical properties

Observed without converting to another substanceIntensive – characteristic of the substanceExtensive – depends on amount of substance present(mass and volume most important!)

Change of state – physical change – no change in Composition –

ice � liquid water � water vapor – still H2O

Other examples: hardness, mp bp, solubility, density, viscosity, color, taste, Smell (senses) –intensive

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Chemical properties

• Relates to reactions of the substance

– Rx change composition of substance

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Chemical properties describe how it can

change into other substances

• In a chemical change – atoms rearrange to

form new substances with new chem/phy

properties

• What does it react with

– O2, acids, bases, oxidizers, reducers

• Does it rust, tarnish or combust?

Atoms rearranging

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