8th grade science - 2nd Semester

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chemical reaction

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the process by which one or more substances change to produce one or more different substances

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reaction rate

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the rate at which reactants change into products over time

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exothermic

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reaction that releases energy

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endothermic

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reaction that absorbs heat

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energy

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the ability to do work or cause change

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kinetic energy

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energy of motion

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potential energy

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stored energy; the energy stored in an object due to its position or composition

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mechanical energy

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the energy associated with the motion and position of everyday objects

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sound energy

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Energy caused by an object's vibrations

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thermal energy

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vibration and movement of molecules, also known as heat; the total energy of all the particles of an object