BIOL 1411 1st Edition Lecture 2 Outline of Last Lecture I What is Biology a Overarching Themes b Characteristics of Living Things c Hierarchy of Living Things d Scientific Method Outline of Current Lecture I Atomic Structure II Bonding III Chemical Reactions IV Water Current Lecture I Atomic Structure Dalton mass of a proton 1 7 x 10 24 g 98 of Living things composed of C H N O P S Isotopes same element different number of neutrons Radioisotopes unstable and spontaneously give off energy in form of alpha beta or gamma radiation II Bonding Electronegativity attractive force an atomic nucleus exerts on electrons in a covalent bond Van der Waals forces occur when 2 molecules are close in proximity III Chemical Reactions Acids release H Bases accepts H Buffer mixture of a weak acid and its corresponding base vice versa IV Water These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute high heat capacity and high specific heat Cohesion molecules resist coming apart from one another when under tension Hydrophobic water hating weak repulsions Hydrophilic water loving polar molecules Hydrocarbon molecules contain only H and C nonpolar Human body is 70 water by weight Waters covalent bonds are polar Waters structure gives it unique and versatile properties Water is the Solvent of Life
View Full Document
Unlocking...