PPT-Spectroscopic and Kinetic Studies of Atmospheric Free Radicals

Elizabeth Foreman YiTien Jou Kara Kapnas and Craig Murray Department of Chemistry University of California Irvine Reaction of interest CH 2 I O 2 CH 2 IOO CH 2 I 2. Sr. Scientist. Avian Nutrition and Feed Technology. CARI, . Izatnager. Bareilly. .. . and . Health. . Free radical . . Structure of Atom. Stable atoms contain an even number of paired electrons.. Course objectives for chapter:. Be able to identify radicals. Rank stability of radicals as a function of . substituents. (and understand origin of phenomenon based on molecular orbital theory). Understand how their formation relates to bond dissociation energies.. Free . Radicals. Free radicals form when bonds break . homo. lytically. Note the single-barbed or fishhook arrow used to show the electron movement. Free . Radicals. Recall the orbital hybridization in carbocations and . Lesson objectives. Teachers' notes. 1) Lesson objective to simplify radicals in exact form.. 2) Introducing three methods, prime factorization, largest. square, and the calculator method.. Sue Blakely. Free Radicals. Chain Free Radical Reactions. Nonchain. . Free Radical . Reactions. Miscellaneous . Free Radical Reactions. . Chapter Five. Free Radicals. Properties of free radicals. 1. One or more unpaired electrons.. Fragrances and Skin Care. Essential Oils. Essential oils are the concentrated extracts of volatile, non-water-soluble aroma compounds from plants. .. Essential . oils are widely used in perfumes, cosmetic products, cleaning products and as . Important Vocabulary. Oxidation. : A chemical reaction that causes damage and decay.. Antioxidant. : Substances that prevent free radicals from harming your body.. Phytochemical. : Substance found . naturally . Steady-state techniques . In . radiolytic. investigations the conversion (i.e., the ratio of transformed and starting molecules) is low (0.0001-0.01), therefore sensitive analytical techniques are needed. The . Anju. .M.P. BCH.10.05.12. One of the paradoxes of life on this planet is that the molecule that sustains aerobic life, oxygen, is not only fundamentally essential for energy metabolism and respiration, but it has been implicated in many diseases and degenerative conditions. Gases Kinetic Molecular Theory and Gas Laws Learning Objectives Be able to explain behavior of Gases using Kinetic Molecular Theory Explain relationship of volume, temperature, and pressure Use absolute temperature scale By THE N AME OF ALLH بسم الله الرحمن الرحيم ANTIOXIDANT PROPARTY OF HONEY BY Prof.Dr EITEDAL M. Daoud Prof. Of Childhealth &Consultant of Clinical Nutrition ,National Research Centre ,Egypt Presented by:. Shubhangi Pant. WHAT ARE ANTIOXIDANTS?. An antioxidant is a molecule that inhibits the oxidation of other molecules. . Oxidation is a chemical reaction that can produce free radicals, leading to chain reactions that may damage cells. . CARI, . Izatnager. Bareilly. .. . and . Health. . Free radical . . Structure of Atom. Stable atoms contain an even number of paired electrons.. An atom consists of an small, positively charged nucleus surrounded by a cloud of negatively charged electrons. . Chain Free Radical Reactions. Nonchain. . Free Radical . Reactions. Miscellaneous . Free Radical Reactions. . Chapter Five. Free Radicals. Properties of free radicals. 1. One or more unpaired electrons..