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Ch 1.4 Changes in Matter

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
Physical Change   A change that alters the form or appearance of a material but does not make the material into another substance  
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Chemical Change   A change in which one or more substances combine ore break apart to form new substances.  
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Law of Conservation of Mass   The principle that the total amount of matter is neither created nor destroyed during any chemical or physical change,  
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Temperature   A measure of the average energy of motion of the particles of a substance.  
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Thermal Energy   The total energy of the motion of all the particles of an object.  
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Endothermic Change   A change in which energy is absorbed.  
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Exothermic Change   A change in which energy is released.  
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Chemical Energy   A form of energy that is stored in chemical bonds between atoms.  
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