States of Matter and physical and chemical changes
Transcript of States of Matter and physical and chemical changes
SolidSolidDefinite shape and definite Definite shape and definite
volumevolumeLittle kinetic energy in the Little kinetic energy in the
moleculesmoleculesExample: aluminum Example: aluminum
LiquidLiquid Definite Definite volumevolume but but nono
definite shapedefinite shape More kinetic energy in the More kinetic energy in the
moleculesmolecules Example: waterExample: water
GasGasNo definite shape no No definite shape no
definite volumedefinite volumeMost kinetic energy of the Most kinetic energy of the
moleculesmoleculesExample: airExample: air
PlasmaPlasmaA soup of positive A soup of positive
nuclei surrounded nuclei surrounded by free flowing by free flowing electronselectrons
Example: LightningExample: Lightning
Physical ChangePhysical Change
Change in matter that Change in matter that does notdoes not produce new produce new productsproductsMay look different, but May look different, but itit’s ’s notnot a new substance a new substance““Easily” reversedEasily” reversed
Physical ChangePhysical ChangeChemical properties are Chemical properties are notnot changed changedNo energy given or No energy given or taken taken unlessunless there is a there is a change of statechange of state
Change of StateChange of StateMolecules gain or lose kinetic Molecules gain or lose kinetic energyenergyMelting/freezing, Melting/freezing, evaporating/condensation evaporating/condensation
Change of StateChange of StateSublimationSublimation
Going from a solid to a Going from a solid to a gasgas
Skips the liquid stateSkips the liquid state
Chemical ChangeChemical ChangeMatter changes from one Matter changes from one kind of material to anotherkind of material to anotherThe atoms The atoms do notdo not change changeThey rearrange themselvesThey rearrange themselvesNot Not “easily” reversed “easily” reversed
Chemical ChangeChemical ChangeThe new substances The new substances have new propertieshave new propertiesChemical change takes Chemical change takes place during a chemical place during a chemical reactionreaction
EnergyEnergyAlways a part of a Always a part of a chemical changechemical change
Given or takenGiven or taken