When a metal is left to the natural elements, corrosion begins immediately. Why do some metals corrode faster than others? The video answers this question as well as explains the usefulness of some corrosion.

Bicycles, boats, and cars rust quickly if not treated. The video explains what rust is, the chemical reaction that causes it, and how to prevent things from rusting. It discusses three different rust prevention methods and how people...

Oxygen makes up 21 percent of Earth's atmosphere. The 13th video in a series of 15 discusses the properties of oxygen. It highlights the importance of it for respiration and corrosives. It goes on to mention the down sides of oxygen such...

The world changes. It really does! But sometimes it changes so slowly that we don't notice it. Other times it changes REALLY FAST!!! In this episode of Crash Course Kids, Sabrina talks about some of the reasons things can change quickly...