Lecture 02- The Chemical Level of Organization.pptx -...

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Anatomy and Physiology IWeek 2:The Chemical Level of Organization
Chapter ObjectivesThe purpose of thechapter is to:1.Introduce the languageand fundamentalconcepts of chemistry2.Discuss how matter isorganized3.Discuss how chemicalbonds form and howchemical reactions occur4.Compare and contrastorganic and inorganiccompounds
Elements of the Human BodyElements: the simplest formof matter to have uniquechemical properties.Minerals: inorganicelements extracted from thesoil of plants that eventuallyend up in the body.Trace elements: Despitebeing the fewest in number,they are integral tophysiology.
What is an atom?
The Periodic Table
Reading the Periodic Table
Ions and ElectrolytesIons: chargedparticles with unequalnumbers of protonsand electrons.Electrolytes:substances that ionizein water and formsolutions that canconduct electricity andprovide manyphysiologic functions.
Binding Atoms Together: IonicBondingOne atom (cation)gives up its electronsto another(anion).Occurs when oneatom is more negativethan another.Most likely to occurwith elements that areon opposite sides ofthe periodic table.
Binding Atoms Together: Covalent BondingAtoms share theirelectrons.Nonpolar covalent: theatoms share theirelectrons evenly.Polar covalent: theatoms share theirelectrons unevenly
Stronger Covalent BondsDouble bond: occurswhen two elementsshare two pairs ofelectrons.

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Term
Spring
Professor
Hansen Salhieh
Tags
DNA, RNA, Atom, Chemical bond

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