Something that chemical bonds hold together and always contain atoms of more than one element is a compound.

Here's why:

* Chemical bonds: These are the forces that hold atoms together. They can be ionic, covalent, or metallic.

* Compounds: Substances formed when two or more different elements are chemically bonded together in a fixed ratio.

* Elements: Pure substances that cannot be broken down into simpler substances by chemical means.

Examples of compounds:

* Water (H₂O) - Composed of hydrogen and oxygen

* Salt (NaCl) - Composed of sodium and chlorine

* Carbon dioxide (CO₂) - Composed of carbon and oxygen

Let me know if you have any other questions!