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Chemistry review

by: Justin Notetaker

Chemistry review GEOL 207

Justin Notetaker
GPA 3.0
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About this Document

General chemistry review
Environmental Geology - Geological/Geochemica
Class Notes




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This 4 page Class Notes was uploaded by Justin Notetaker on Monday January 11, 2016. The Class Notes belongs to GEOL 207 at Ball State University taught by Neumann in Winter 2016. Since its upload, it has received 21 views. For similar materials see Environmental Geology - Geological/Geochemica in Geology at Ball State University.

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Date Created: 01/11/16
Week 2 (no class week oneProfessor illness) Geology 207 Environmental Geology, Geochemical Cycles Dr. Klaus Neumann INTRODUCTION / REFRESHER CHEMISTRY Atom  Basic building block. Proton  (+) Mass =1 Neutron  (-) Mass = 0 Electron (0) Mass = 1 Atomic Number = Number of protons Determine number of neutron  (Atomic mass – atomic number) Balance charge using protons and electrons (neutron charge = 0) - Most stable (rarely react) when out most electron orbit is completely filled. (Noble Gases- He, Ne, Ar, Kr, Xe, Rn) Ion  has a charge (+ or -) Cation  Positive charge (+) Anion  Negative charge (-) Compounds – atoms together NaCl – Ionic compound Covalent – (NH3) - Metallic Bonds – Metal – Conductor (electricity) – Hydrogen Bonds – Isotope – Change in neutrons Radioactivity –most reactive Carbon-14 (most radioactive, choosing from carbon-12, carbon-13, & carbon-14) Mole  atomic mass (grams) or molar ratios (Avogadro’s number) CHEMICAL REACTIONS 1. Precipitation/Dissolution 2. Acid/Base 3. Oxidation Reduction Precipitation/Dissolution Reactant (left side)  Products (right side) Na(+) + Cl(-)  NaCl Acid / Base (Sum always remains the same) HCl  H(+) + Cl(-) Acid H20  H(+) + OH(-) Acid NaOH  Na(+) + OH(-) Base pH – level of acidity; Oxidation / Reduction Oxidation is the loss of electrons or an increase in oxidation state by a molecule, atom, or ion. Reduction is the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion. CH4 + 2O2  CO2 + 2H2O Carbon changes charge WATER (Covalent) Vapor Liquid Solid Density is temperature dependent. If you heat water it will take more space FRESHWATER


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