PreparED Study Materials
CHEM 21625: General Chemistry (Laboratory)
School: SIM-UB (University at Buffalo-The State University of New York)
Number of Notes and Study Guides Available: 1
Notes
Videos
Do Rusting and Burning Violate Conservation of Mass?
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This video explores the processes of rusting in iron and burning a match, addressing whether the observed changes in mass violate the law of conservation of mass, and explains how these processes align with the law.
Calculating the Mass of a Sucrose Crystal: A Chemistry Insight
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Explore the fascinating world of chemistry as we calculate the mass of a sugar crystal with 1.8 x 10¹? molecules of sucrose. Using the concept of a mole and Avogadro's number, discover how to convert molecular numbers to milligrams. Grasp foundational principles in a clear, engaging format.
Reactions of Isopentyl Bromide with Various Reagents
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Explore the fascinating reactions of isopentyl bromide with a variety of reagents and uncover the expected products in each scenario.
Sketching Lewis Structures: Radical Species ClF? and BrO? Explained
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This video elucidates the method to sketch Lewis structures for the radical species ClF? and BrO?. Highlighting the distinguishing feature of an unpaired electron, we illustrate the bond arrangements and lone pairs that define these unique chemical entities.
Aluminum & Iron(III) Oxide Reaction: Welding Heat & Calculations
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Explore the chemical reaction between Aluminum and Iron (III) Oxide commonly used in welding. Learn to calculate the mass of Aluminum Oxide formed and identify the excess reagent. Dive deep into molar mass conversions stoichiometry and real-world applications in this chemistry tutorial.
Molecular Lewis Structures for CH?, CO?, H?Se, and NH?
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In this video, we demonstrate the creation of Lewis structures for methane, carbon dioxide, hydrogen selenide, and ammonia, highlighting the arrangement of atoms and bonds in each molecule. The video emphasizes the importance of Lewis structures in visualizing atomic bonding and the presence of lone electron pairs.