In order to understand reactions, we need to understand the forms of energy. All body functions require energy.
Forms of Energy
Energy: The capacity to do work.
a) Potential: inactive or stored energy b) Kinetic: the energy of motion – any object in motion has kinetic energy c) Chemical: is a form of potential energy. The breaking apart or formation of chemicals causes chemical energy (absorbed or released) in the form of radiant heat or electrical energy. Law of Conservation of Energy: Energy can be neither created nor destroyed, BUT CAN BE CONVERTED INTO ANOTHER FORM
2) Chemical Reactions
A chemical reaction occurs when bonds between atoms are formed or broken. The reaction proceeds as starting substances called reactants change and become products , or the end substances. Metabolism is the term used to describe the combination of all chemical reactions that occur in the body.
Types of Reactions
Exergonic: Chemical reactions that RELEASE energy as they occur.
Endergonic: Chemical reactions that REQUIRE energy to occur.
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