Chemistry is the science of matter and the changes it undergoes during chemical reactions. In this section, learn about everyday chemistry, from chlorine beach to helium, and even why chocolate turns gray.
Chemical elements are substances composed of only one type of atom and they cannot be broken down further. Chemical elements are the simplest forms of matter and each one is assigned a specific atomic number. Check out these articles on chemical elements. See more »
Chemical compounds are substances that form when two or more elements are joined together. Most of the atoms that form living organisms and the Earth's crust are in compound form. Check out these great articles on chemical compounds. See more »
Chemical processes and tests allow chemists to ascertain the properties of various substances. By utilizing chemical processes and tests, scientists can look at life on the atomic level. Click here to find some articles on chemical processes and tests. See more »
Chemistry terms are used to describe the various chemical elements, compounds, processes and tests. Whether you're in the classroom or the lab, chemistry terms are necessary for proper communication. Click here to check out some great chemistry articles. See more »
Chemists have changed the way that science looks at the world. By breaking substances down to the atomic level, chemists have greatly expanded our knowledge of the world. Click here to find articles about the greatest chemists in history. See more »
If you were to touch dry ice, it wouldn't be anything like touching water ice. So what's it like? Is it hot or cold? And would it leave a mark?
Have you seen investigators on crime shows who spray some stuff on a "clean" carpet and suddenly -- blood stains! Well, of all the fictional technology on TV, it turns out this stuff is real! Find out how luminol reveals the blood.
When you speak, a stream of air flows up your trachea from your lungs. And when you add helium, your voice rises several octaves. So if you filled the air with helium, just how high would your voice get?
