PreparED Study Materials
CHEM 121: General Chemistry 121B
School: Southern Illinois University Edwardsville
Number of Notes and Study Guides Available: 4
Notes
Study Guides
Videos
Endothermic vs. Exothermic: Unraveling Heat Changes in Chemical Reacti
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the intricacies of endothermic and exothermic reactions through everyday examples. Delve into the energy dynamics of ice melting and water freezing, while emphasizing the importance of the heat change (?H) in these processes.
Comparing Masses: Analyzing Water, Ethanol, Chloroform & Balsa Wood
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the relationship between mass, density, and volume using real-life examples, including water, ethanol, chloroform, and balsa wood. Learn the process of calculating mass and uncover which substance has the highest mass based on given conditions.
Weight% of Ba, K, Cl in Heated BaCl2·2H2O & KCl Mix
Want To Learn More? To watch the entire video and ALL of the videos in the series:
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.
Structures & Classifications of C?H?? Alkyl Groups: From Primary to Te
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the diverse structures of C?H?? alkyl groups and classify them into primary, secondary, or tertiary categories. Through a visualization of carbon atom arrangements, uncover the nuances of n-pentyl, sec-pentyl, tert-pentyl, isopentyl, and neopentyl structures.
Atomic Radius Trends: Unveiling Periodic Table Secrets
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Discover the intricacies of atomic radius and its trends on the periodic table in this video. Unravel the factors influencing atomic size and explore how elements' positions on the periodic table affect their atomic radii.
Identifying Fundamental Units in Rb?O, N?, Fe(NO?)?, and N?F?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
In this exploration, we delve into the fundamental units of various substances, whether they are single atoms, molecules, or formula units. We examine ionic compounds like Rb?O and Fe(NO?)?, characterized by formula units as their basic components, and covalent compounds like N? and N?F?, where molecules are the fundamental units.