Khan Academy

Molecular structure of RNA – video (K-A)

Molecular structure of DNA (K-A)

Antiparallel structure of DNA strands-video (K-A)

Biological macromolecules review (K-A)

Carbohydrates (K-A)

Introduction to carbohydrates (K-A)

Introduction to amino acids (K-A)

Molecular structure of RNA-video (K-A)

Molecular structure of triglycerides (fats) (K-A)

Overview of protein structure (K-A)

Saturated fats, unsaturated fats, and trans fats (K-A)

Capillary action and why we see a meniscus (K-A)

Hydrogen bonding in water (K-A)

Cohesion and adhesion of water (K-A)

Hydrogen bonds in water (K-A)

Importance of water for life (K-A)

Lesson summary: Water and life (K-A)

Surface tension (K-A)

Specific heat, heat of vaporization, and density of water (K-A)

Water as a solvent (K-A)

Acids, bases, pH, and buffers (K-A)

Arrhenius definition of acids and bases (K-A)

Autoionization of water (K-A)

Definition of pH (K-A)

Bronsted-Lowry definition of acids and bases (K-A)