PreparED Study Materials
CH 232: Global Environmental Change
School: Portland State University
Number of Notes and Study Guides Available: 5
Notes
Videos
Electronegativity & Acid Strength: Decoding Acid Formulas
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This video discusses how the electronegativity of attached groups affects the strength of acids. Comparing pairs such as Chloroacetic vs Fluoroacetic and Acetic vs Nitroacetic acids, we highlight which is the stronger acid in each pair and why.
Validating & Correcting Chemical Equations: Ba(NO?)? to LiCl Reactions
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Dive into the accuracy of four chemical reactions involving compounds like Barium Nitrate and Lithium Chloride. Discover which reactions yield precipitates which are correct and which need correction. A comprehensive review from Barium Sulfate formation to Lead Chloride precipitation
Does Cesium Bromide & Hydrogen Iodide in Water Conduct Electricity?
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Explore the conductivity of aqueous solutions: Cesium bromide and hydrogen iodide. Understand their ionic nature and how it leads to the presence of charged ions enabling electricity conduction
Dimethylamine vs. Trimethylamine: Structures & Boiling Points
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Uncover the science behind boiling points and molecular interactions in this video. Explore why Dimethylamine boils at a higher temperature than Trimethylamine, despite having a lower molecular weight, and gain insights into the role of molecular structures in determining physical properties.
Determining Neutrons from Atomic & Mass Numbers: A Comprehensive Guide
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Understand the relationship between atomic number, mass number, and neutrons within atoms. This video breaks down the simple calculation to determine the number of neutrons for specific elements like Nickel, Uranium, Scandium, and Argon.
Drawing the Lewis Structure for Glycine: The Protein Building Block
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Discover how amino acids, specifically glycine, form the foundation of proteins. Understand and visualize the Lewis structure representation of glycine. Grasp the significance of atomic bonding and electron distribution.























