CHEM 112: Principles of Chemistry

Classify substances into various categories: element compound homogeneous mixture and heterogeneous mixture. This video breaks down the fundamental distinctions between pure substances and mixtures illustrating with real-world examples like urine pure water a Snickers™ bar and soil. A concise guide for understanding the essence of material classification in chemistry.

Discover the simple yet essential method for counting the number of oxygen atoms in different molecular sets, including molecules and ions.

When water boils, bubbles rise to the surface, but what's in these bubbles? Let's evaluate the options. Option d, water vapor, is correct; the bubbles during boiling are primarily composed of water vapor, the gaseous state of water.

This discussion explores the nature of hydrogen peroxide as a compound composed of hydrogen and oxygen atoms and categorizes it as either a homoatomic or heteroatomic molecule.

This video explores the concept of structural levels (primary, secondary, tertiary, and quaternary) in biomolecules, focusing on double-stranded DNA, tRNA, and mRNA to understand the diverse ways these molecules exhibit these structural layers.

Explore the calculations for mole fractions, partial pressures, and total pressure in a 22.4 dm³ vessel with H? and N? at 273.15 K.