BIOL-2220 Chapter Notes - Chapter 2: Carboxylic Acid, Starch, Monosaccharide
20 Aug 2016
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Document Summary
Energy: the capacity to do work; may be stored (potential energy) or in action (kinetic energy) Kinetic energy: the energy of motion or movement, e. g. , the constant movement of atoms, or the push given to a swinging door that sets it into motion. Chemical energy: energy stored in the bonds of chemical substances. Electrical energy: energy formed by the movement of charged particles, e. g. , across or along cell membranes. Mechanical energy: the energy directly involved in moving matter, e. g. , in bicycle riding, the legs provide the mechanical energy that moves the pedals. Electromagnetic radiation: emitted photons (wave packets) of energy, e. g. , light, x ray, infrared. Element: one of a limited number of unique varieties of matter that composes substances of all kinds; e. g. , carbon, hydrogen, oxygen. Atom: smallest particle of an elemental substance that exhibits the properties of that element; composed of protons, neutrons, and electrons.
