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Ch. 1 s.3

Physical change a change in a substance that does not change its identity
Chemical change a change in which one or more substances combine or break apart to form new substances
Law of conservation of mass states that the total amount of matter is neither created nor destroyed during any physical or chemical change
Energy the ability to do work
Temperature a measure of the average energy of motion of the particles of a substance
Thermal energy The total energy of all the particles of an object
Endothermic change A change in which energy is taken in
Exothermic change a change in which energy is taken off
Created by: othomas