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Definition of Exergonic Reaction
An exergonic reaction is a reaction that releases free energy. Because this type of reaction releases energy rather than consuming it, it can occur spontaneously, without being forced by outside factors.
In chemistry terms, exergonic reactions are reactions where the change in free energy is negative. Free energy measures the total amount of energy available in a system; negative changes mean that energy has been released, while positive changes mean that energy has been stored.
Exergonic reaction
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Through the process of photosynthesis, carbon dioxide is pulled from the air to produce food made from carbon for plant growth. Carbon moves from plants to animals. Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food too.
