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Ch 1.4 Chem

Ch 1.4 Changes in Matter

Physical Change A change that alters the form or appearance of a material but does not make the material into another substance
Chemical Change A change in which one or more substances combine ore break apart to form new substances.
Law of Conservation of Mass The principle that the total amount of matter is neither created nor destroyed during any chemical or physical change,
Temperature A measure of the average energy of motion of the particles of a substance.
Thermal Energy The total energy of the motion of all the particles of an object.
Endothermic Change A change in which energy is absorbed.
Exothermic Change A change in which energy is released.
Chemical Energy A form of energy that is stored in chemical bonds between atoms.
Created by: lrlong