Steve Spangler reveals the secrets of color, with amazing experiments you can do at home. He’ll show you how to create clouds ...

Sometimes a scientist needs to figure out what is in a certain mixture of substances. One way they can do this is to use a process called chromatography. In the activity below, you can try ...

To study these kinetics, I routinely placed nucleic acids in radioactive water and added the slurry to a liquid chromatography column. Inside, porous beads caught tiny water molecules but allowed ...

A pencil line is drawn, and spots of ink or plant dye are placed on it. There is a container of solvent, such as water or ethanol. A pure substance will only produce one spot on the chromatogram ...