Chemistry Archive

functional groups

From Functional Groups to Biomolecules

We have released two new videos in our Biology 101 series. These videos take you from an overview of functional groups to the chemical reactions that link the functional groups of the simple building blocks …

Liquid Water and Mars

We have long known that there was once water on Mars – the real question was whether liquid water still exists on the Red Planet, or whether it long ago dissipated into space. This week, …
Rosetta and its comet

The Water of Comet 67P

Where did the water on Earth come from? The early Earth was a very hot, very dry place, but over time it accumulated water to form our massive oceans and lakes. For a long time, …

The Isotopes of the Fukushima Disaster

On March 11, 2011, a magnitude 8.9 earthquake struck the coast of Japan, causing the shutdown of 11 of Japan’s nuclear power reactors, including reactors 1, 2, and 3 at the Fukushima Daiichi power plant. …

Video: Polar Covalent Bonds

Before starting a class in biology or genetics, it is often useful to review some of the basic principles of chemistry, specifically the general characteristics of atoms and chemical bonds. In our earlier videos we …