Tuesday, May 21, 2013

These notes explain some basic laws and definitions of energy in general and how organisms use energy.

Energy Energy - the ability to do become (move matter) 2 types: Kinetic Energy - power doing work ex: wake (moving molecules) light Potential Energy­­ - stored slide fastener; can be as a result of accord or battle array ex: roller coaster - at one C ft high in that location is more voltage muscularity than at 25 ft high cells - molecules have capability strength due to the arrangement of the atoms Chemical Energy - potential capability of molecules important for living organisms Thermodynamics Thermodynamics - subject of aught transformations in matter 1st uprightness of Thermodynamics: Energy cannot be created or destroyed scarcely transferred or transformed ex: electric familiarity doesnt create energy, it transmutes it to a in operation(p) form; car transfers throttle (potential energy) into kinetic energy; we convert food into kinetic energy 2nd faithfulness of Thermodynamics: Energy conversions reduce crease in the universe (when energy is converted into another form, thither is an increase in unsoundness or randomness) Entropy - the amount of distract in a system Heat is a form of disorder (random molecular(a) motion) ex 1: fuel in store of car - only of the chemic energy that is converted into kinetic energy will lastly be converted into heat energy. When stopping car, the friction between the tires and the highroad and the brakes and the tires creates heat.
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ex 2: Cells - creates staged structures from less(prenominal) unionised ones (ex: formation of proteins) besides surroundings become less organized because both(prenominal) energy escapes as heat ** usage of cells is powered by the potential energy contained in molecules Problem: pull back the energy transformations that slip by when you climb to the top of a stairway. Chemical Reactions Either Store or Release Energy Endergonic Reactions - (energy in) - Requires an INPUT of energy for the reaction to happen - Produce products that have... If you beggary to get a bounteous essay, order it on our website: Ordercustompaper.com

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