Final answer:
A compound is a type of substance containing atoms of two or more different elements chemically bonded together.
Step-by-step explanation:
A compound is a type of substance containing atoms of two or more different elements chemically bonded together.
For example, water (H2O) is a compound because it is made up of hydrogen and oxygen atoms.
Compounds are formed through chemical reactions, where atoms combine and rearrange to create new substances with unique properties.