Wikipedia article about Chemical Change just a definition of chemical change.
Law of Conservation of Mass: was established in 1789 by French Chemist Antoine Lavoisier.
States that mass is not created or destroyed in any ordinary chemical reaction.
Or more simply, the mass of substances produced ,products by a chemical reaction is always equal to the mass of the reacting substances and reactants.
physical property: characteristics of a particular kind of matter that do not involve a cemical change, color, hardness, physical state.
Wednesday, March 21, 2007
introductions
My name is Cirranity Ethelbah. And I am from Whiteriver, AZ. And I'm full blooded Apache. I am here in Portland,OR because I wanted to go to school here for my freshmen year. And maybe next year but only for awhile. But hopefully not all four years!.
Wednesday, March 14, 2007
Zippy's IPS Class
This video was about how many babies were born every second and how many phone calls were been made and that we are going to learn about the tecnlogey that has not been made yet
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