PreparED Study Materials
CHEM 101: Intro to Chemistry
School: Washtenaw Community College
Number of Notes and Study Guides Available: 2
Notes
Videos
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:
full solution
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.
Balancing Equations: From Lead Sulfide to Ammonia Reactions
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video shows you how to balance equations from the reaction of lead(II) sulfide with hydrochloric acid to ammonia's interaction with oxygen. Understand the nuances of atom balancing and grasp the precise stoichiometric relationships.
BrF?, ClF?, & IF? Lewis Structures: Which Don't Obey Octet Rule?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Unravel the Lewis structures of BrF?, ClF?, and IF? and their relationship with the octet rule. Examine how fluorine bonds with bromine, chlorine, and iodine. Identify molecules that deviate from the standard octet distribution.
Decoding Ions: Al³?, S²?, I?, Ag? & Their Electron-Proton Dynamics
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
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.
What is a propeller twist?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Unravel the concept of propeller twist and its role in aviation and marine propulsion. We'll delve into the science and engineering behind this intriguing phenomenon, shedding light on its applications and significance.
Copper Bombardment: Calculating X-ray Photon Energy
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
We'll guide you through the process of calculating the energy associated with X-ray photons when the wavelength is 0.154 nm. This video offers a practical application of physics and helps you understand the energy spectrum of X-rays. Whether you're a science enthusiast or a student, you'll gain valuable insights into this intriguing topic.

