matter (physical science)物质（物理科学）

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1、MATTER(PHYSICALSCIENCE)I.Whatismatter?A.Matter1.Air2.Water3.Wood4.HumanBeingsB.MassC.SpaceII.Whatarethestatesofmatter?A.SolidsB.LiquidsC.GasesI.Whatarethephysicalandchemicalpropertiesofmatter?A.ThephysicalpropertiesPhysicalcharacteristicswouldinclude:1.Whetheritisasolid,liqu

2、id,orgas2.Whetheriswillfloatinwater(density)3.Whatcanbeobservedusingthesenses4.MagneticattractionB.ThechemicalpropertiesChemicalcharacteristicswouldinclude:1.Howasubstancereactswithoxygen,ex.–ironrusts2.Howasubstancereactswithanacid,ex.–vinegarandbakingsodareacttoproducecarb

3、ondioxideII.Whatarephysicalandchemicalchangesofmatter?1.PhysicalchangeisForexample1.Whenastateofmatterischanged:a.addingheattosolidmattercausesittomeltb.ifliquidmatteriscooled,itwillreachitsfreezingpointandbecomesolid2.Woodischopped;woodremainswood,butisinsmallerpieces.3.Ama

4、gnetlosesitmagnetism,butthemagnetisstillthesamemetal,justnolongermagnetic.2.ChemicalChangeisForexample:1.Bakingcookieswillcausechemicalchanges,sugarwillcaramelizeandthebakingpowderwillcausegasbubblestobeformed2.rustingsteelwool,oxygenreactswithiron3.Tarnishingpennies,oxygenr

5、eactswithcopper4.Burningacandle,paraffinwaxreactswithoxygentoproducecarbon,carbondioxidegas,heatandlightaregivenoff.