chapter2 outline

chapter2 outline - 2 _ LIFE'S CHEMICAL BASIS Chapter...

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2                                                                                                                                                                ______________________________________________________________________________ LIFE’S CHEMICAL BASIS Chapter Outline IMPACTS, ISSUES: WHAT ARE YOU  WORTH? START WITH ATOMS RADIOISOTOPES  WHAT HAPPENS WHEN ATOM BONDS   WITH ATOM? Electrons and Energy Levels From Atoms to Molecules BONDS  IN BIOLOGICAL MOLECULES Ion Formation and Ionic Bonding Covalent Bonding Hydrogen Bonding WATER’S LIFE-GIVING PROPERTIES Polarity of the Water Molecule Water's Temperature-Stabilizing  Effects Water's Solvent Properties Water's Cohesion ACIDS AND  BASES The pH Scale How Do Acids and Bases Differ? Salts and Water Buffers Against Shifts in pH SUMMARY SELF-QUIZ CRITICAL THINKING Objectives 1. Understand  how  protons, electrons, and  neutrons are arranged  into atoms and  ions. 2. Explain how  the distribution  of electrons in an atom  or ion determines the number  and  kinds of  chemical bonds  that can be formed. 3. Know  the various  types of chemical bonds, the circumstances under  which each forms, and  the   relative strengths of each type. 4. Understand  the essential chemistry of water and  of some common  substances dissolved  in it. 5. Understand  the relationships  of acids, bases, and  salts. Key Terms element atom proton neutron electron atomic number mass number periodic table isotopes radioactive decay radioisotopes tracers orbital shell model chemical bonding molecule Life’s Chemical Basis 9
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compound mixture ion ionic bond covalent bond double covalent bond nonpolar  covalent bond polar covalent bond hydrogen  bond hydrophilic substances hydrophobic  substances temperature evaporation solvent solute sphere of hydration cohesion hydrogen  ion, H + hydroxide ion, OH pH  scale acid, acidic base, basic salt buffer system Lecture Outline Impacts, Issues: What Are You Worth? A. Chemically, how  much is a human  body really worth?
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This note was uploaded on 06/29/2008 for the course BIOL 1408 taught by Professor Mason during the Spring '08 term at Dallas Colleges.

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chapter2 outline - 2 _ LIFE'S CHEMICAL BASIS Chapter...

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