Scientist conducting a laboratory experiment with colorful chemical solutions and scientific glassware.

Compounds Can Act Nothing Like Their Ingredients

A compound is made from more than one element, but its properties may bear little similarity to those elements. Chemistry is full of combinations that behave like something entirely new.

Molecules, Compounds, and Solids in Chemistry

A ball-and-stick representation of the caffeine molecule (C8H10N4O2)

Some Substances Are Molecules

A molecule is a small group of atoms bonded together that has its own chemical properties. Water and many organic compounds exist as electrically neutral groups of atoms bound together.

Molecules, Compounds, and Solids in Chemistry