Chemical
Definition 1 of 3
Pro Tip 1/3
Natural vs. Man-made
Chemicals can be natural like water or man-made like plastic. Salt is a natural chemical, while nylon is a man-made chemical.
Pro Tip 2/3
Chemistry Building Blocks
Chemicals can be elements or combinations known as compounds. Sodium is a chemical element; sodium chloride is a chemical compound.
Pro Tip 3/3
Everyday Use
Everyday products like soap and medicine contain chemicals. The label shows the different chemicals used to make this soap.