Question

1. a(n) ____ is the name given when atoms (whether identical or different) are joined together by chemical bonds. molecule compound mixture element

Explanation:

A molecule is defined as atoms (either the same or different types) connected by chemical bonds. A compound is a type of molecule with different - type atoms. A mixture has no chemical bonds between its components. An element is a pure substance with only one type of atom (not bonded in the sense of a molecule in this context).

Answer:

molecule