A chemical reaction involves the breaking apart of bonds in the reactants and then the rearrangement of the atoms to form the products. This process requires the input and output of energy. Duration: 4:32.
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The bond energies of the reactants and products can be examined to determine whether the reaction should be exothermic or endothermic. Duration: 7:01.
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Kai and Maile encourage you to perform the "rubbing water" hands-on activity. The result may surprise you. Duration: 1:06.
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Watch these additional videos to complete this tutorial.