Science Chemical And Physical Change.Ppt.Pptm

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Science Chemical and Physical Change
AlfredoOsornio
Period2
09/18/09
Chemical and Physical Change
Chemical Change: is when two substances are intertwined with each other making something different.
Physical Change: is when an object changes form or shape.
Chemical Change
The wax melted off the candle in the air with the oxygen and carbon dioxide is an example of chemical change.
The air of the wax and the oxygen produces carbon dioxide (Co2) and water (H2O).
Physical Change
The wax of the candle being melted is an example of physical change.
It’s an example because the wax is being melted so it’s form and shape changes.
References
http://t4.jordandistrict.org/grade_level/fifth/images/ice_melting.jpg
http://sfrc.ifas.ufl.edu/forestgenomics/cycle
http://www.wisc-online.com/objects/SCE204/SCE204.swf