Chemical Energy (Science Experiments)
Exothermic or Endothermic: Determining whether various chemical reactions are exothermic or endothermic
Chemical energyEnergy stored in chemical bonds. is the energy stored within the bonds of . A bondThe force that holds two atoms together. is the force that holds two atoms together. Different substances have bonds held together by different amounts of energy. When those bonds are released, a takes place, and a new substance is created. Chemical reactions that break these bonds and form new ones sometimes release the excess energy as heatA form of energy produced by the motion of molecules that make up a substance. and sometimes absorb heat energy from whatever is around them.
Thus, heat energy can be produced or absorbed during a chemical reaction. Reactions that release heat energy are called . Reactions that take in heat energy from the surrounding environment are called endothermicA chemical reaction that takes in heat energy.. Whether heat energy is given off or absorbed during a chemical reaction depends on the bonds that hold the atoms together.
(The entire section is 2749 words.)
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