Question

what substance forms when two or more elements combine chemically? a an ion b an atom c a chemical bond d a compound

Explanation:

• An ion is an atom or molecule with a net electric charge due to loss or gain of electrons.
• An atom is the basic unit of a chemical element.
• A chemical bond is the force that holds atoms together in a substance.
• A compound is a substance formed when two or more elements combine chemically.

Answer:

d. a compound