PreparED Study Materials
Notes
Videos
Amino Acid Structural Formulas at Low pH
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the protonation of amino acids, specifically valine and threonine, when subjected to a pH lower than their isoelectric points, highlighting the structural changes in their carboxyl and amino groups.
Determining Neutrons from Atomic & Mass Numbers: A Comprehensive Guide
Want To Learn More? To watch the entire video and ALL of the videos in the series:
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.
Element Classification: Rep, Trans, Inner-Trans, Noble Gases
Want To Learn More? To watch the entire video and ALL of the videos in the series:
We categorize elements into representative, transition, inner-transition, and noble gases based on their positions in the periodic table and general characteristics, without revealing specific element classifications.
Iron Nail Heating: Finding Temperature After 15J Transfer
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Discover the process of determining the final temperature of an iron nail after heat absorption. Using the specific heat capacity of iron and the heat transfer formula, we calculate the temperature increase and reveal the nail's new thermal state. This tutorial offers a clear understanding of how materials respond to heat.
Indium Secrets: Electron Config Magnetism & HCl Reaction
Want To Learn More? To watch the entire video and ALL of the videos in the series:
This video breaks down the configurations for In In+ In2+ and In3+ distinguishing between diamagnetic and paramagnetic properties. Uncover the oxidation state of Indium in InCl2 and understand its diamagnetic nature.
From CH? to C?H?: Decoding Molecular Formula with Molar Mass
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Discover the process of determining a compound's molecular formula from its empirical formula and molar mass. Understand the calculations and reasoning behind deriving C?H? from the empirical formula CH? with a molar mass of 56.11 g/mol. Gain insight into fundamental chemistry concepts and computations.