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chapter 3 lesson 4

physical change alters the form or appearance of matter but does not turn any substance in the matter into a different substance
chemical change a change of matter that produces one or more new substances is a chemical change or chemical reaction
law of conversation of mass the fact that matter is not created or destroyed in any chemical or physical change
temperature the measure of how hot or cold something is
thermal energy the total energy of the motion of all the particles in an object
endrothermic change a change in which energy is obsorbed
exothermic change releases energy
chemical energy the energy stored in the chemical bonds between atoms is a form of energy
Created by: kwinkler