PreparED Study Materials
Notes
Videos
Understanding Boiling Points: Ethylene Glycol, Alcohols & Ethers Expla
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This video offers insights into the properties and boiling points of different alcohols and ethers, including antifreeze agents like ethylene glycol. We also discuss how molecular structures and interactions impact boiling points, shedding light on key differences among related compounds.
Moles of H in Samples: H?O, NH?, N?H?, C??H??
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Discover how to calculate the number of moles of hydrogen in different chemical samples, including H?O, NH?, N?H?, and C??H??.
Animal and Plant Energy Storage: Fats and Oils Explained
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This video delves into the fascinating world of energy storage in animals and plants, offering insights into why fats are the primary energy storage compound in animals (except muscles) and why plants opt for alternative strategies instead of using fats and oils.
Decoding Ions: Al³?, S²?, I?, Ag? & Their Electron-Proton Dynamics
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Break down the mysteries of ions like Al³?, S²?, I?, and Ag?. Discover how the electron count impacts ion charge by exploring Aluminium, Sulfur, Iodine, and Silver. Enhance your understanding of protons, electrons, and their relationship in ions.
Weight% of Ba, K, Cl in Heated BaCl2·2H2O & KCl Mix
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In this video we explore the process of calculating the weight percent of barium potassium and chlorine in a mixed sample of barium chloride dihydrate and potassium chloride. Through a step-by-step approach we examine the changes in sample weight after heating to 160°C breaking down the calculations for each elemental content.
Identify the 3' and 5' ends of the DNA segment AGTCAT
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This video discusses the fundamental concept of DNA structure, focusing on the identification of the 3' and 5' ends of a DNA segment, specifically highlighting the sequence AGTCAT and its importance in understanding DNA strand direction for processes like replication and transcription.

















