Khan Academy: Balanced and Unbalanced Forces: Balanced and Unbalanced Forces

Video lecture explores what is true about how unbalanced forces relate to motion and acceleration. [6:36]

Sal will illustrate how to balance redox reactions in acid. [11:58]

Understand how to balance a redox reaction in a base. [13:57]

Learn about Van der Waals forces, London dispersion forces, dipole-dipole forces, and hydrogen bonding. [11:39]

When balancing equations for redox reactions occurring in acidic solution, it is often necessary to add ions to fully balance the equation. In this video [12:04] we'll walk through this process for the reaction between dichromate and...

A video [5:03] showing how to balance a chemical reaction by making sure you have the same number of atoms of each element on both sides.

A video [4:37] showing how balance more complicated reactions by of balancing the combustion reaction of ethylene.

Practice balancing chemical equations with ten multiple choice questions. Hints are available if needed.

A video [4:57] showing how to balance the combustion reaction of ethane.

A video [4:11] showing how to use the substitution method to balance a reaction where a reactant and product have a polyatomic ion in common.