lunes, 27 de septiembre de 2010

vocabulary of chemical changes

physical change a change in size,shape,state,withoutforming a new substance.

chemical change a change in matter that prduces a new substance with different properties from the original.

chemical reaction a chemical change of original substance into one or more new substance.

reactant  one of the original substance before a chemical reaction takes place.


product one of the new substance produced when a chemical reaction takes place.
illustrate

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