Chapter Three Concepts and Terms

Chapter Three Concepts and Terms - B IO 240-75 Fall 2009...

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BIO 240-75 Fall 2009 Vocabulary, Concepts and Terms for Chapter 3 Water and the Fitness of the Environment Electronegativity- the attraction of a given atom for the electrons of a covalent bond. Polar molecule-the unequal distribution of electons; the two ends of the molecule have opposite charges. Hydrogen bond-a type of weak chemical bond that is formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom of a polar covalent bond in another molecule. Intermolecular force- Cohesion-the binding together of like molecules, often by hydrogen bonds. Adhesion-the attraction between different kinds of molecules. Surface tension-a measure of how difficult it is to stratch or break the surface of a liquid. Water has a high surface tension because of the hydrogen bonding of surface molecules. Capillarity- Heat-the total amount of kinetic energy due to the random motion of atoms or molecules in a body of matter; also called thermal energy. Heat is energy in its most
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This note was uploaded on 02/17/2010 for the course BIO 240 taught by Professor Hoffman during the Fall '06 term at University of Louisville.

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Chapter Three Concepts and Terms - B IO 240-75 Fall 2009...

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