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Science 8 64
Chapter 1: Section 3: Changes in Matter
Question | Answer |
---|---|
physical change | A change in a substance that does not change its identity |
law of conservation | That principle that the total amount of matter is neither created nor destroyed during any chemical or physical change |
energy | The ability to do work or cause change |
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 given off |