Learn how to assign oxidation numbers to keep track of the distribution of electrons during a chemical reaction.
Learn about the history of science by reading about the significant scientific events that took place on this day in history.
Learn about the history of science by reading about the significant scientific events that took place on July 30 in history.
Bismuth is one of the easiest and prettiest metal crystals that you can grow yourself. The crystals have an interesting geometric hopper form and are rainbow-colored from the oxide layer that quickly forms on them. Try these step-by-step instructions for growing bismuth crystals.
You may be familiar with Mylar in shiny helium-filled balloons, solar filters, space blankets, protective plastic coatings or insulators. Here's a look at what Mylar is made of and how it is made.
Mix two clear solutions, wait, and watch the liquid turn to gold! This is a simple alchemy project or chemistry demonstration, based on early attempts to make gold from base metals.
Learn about the toxic chemicals produced by urine in treated swimming pool water.
Sand that you find on a beach or a playground is a mixture of minerals and organic matter. Pure sand, which is silicon dioxide or silica, is a chemical you can make. Here's what you do.
Usually when you see shark teeth they are black, yet teeth in living sharks are white. Here's the explanation behind why shark's teeth turn black.
Understanding acids and bases is important for grasping chemistry concepts. Here's an introduction to acids and bases, with definitions for key acid and base terms.