University:
Mississippi College
Course:
BIO 305 | Cell Biology
Academic year:

2022
Views:

11

Pages:

1
Author:

Abby D.

23 Chemical Transformations involve Energy and Energyn Transfers Second law of Thermodynas Stability of energy of a molecule is determined on energy 4 Low energy-stable high energy-instable/constant motion Change needs energy -KE & PE-KE-energy of movement PE-stored energy existretched string nut released First law of Thermodynamics Entropy Chemical bond energy motion energy (muscle contracts). First law of Thermodynamics-can't be created or destroyed Lino new energy disappeared and no new energy is formed. Usuable and Unusuable energy energy before Energy after balanced (Same) energy is conster When transfered Building complex molecules cut of simple molecules require energy, ex: Starch being from simple to big molecules energy becomes stored. Potential energy Le weak bond-lithe energy to bread -high PE Lo Strong land-lot of energy to break-lQwPE Kinetic energy Second Low of Thermo dynamics: The amowit of chemical-bund energy declines after each energy trans formations. energy after each transformation -Increases entropy some of the energy becomes available to do work Entropy-measure now spread out energy is of how much it wowild wincreas of entropy if energy is added ex: heating a kettle on the stove. Some wable energy is lost increasing entropy. weak bund strong bond usable energy declines out Feach step Crifood chains The study of energy can be determined by it to anstaring in different Steps or being constant. The fint and 2nd lewat thermsoyroosies kalls Energy, one bos boergy that coni becreated ner desareyed while the other has unusable energy when Horstered in steps.