Question

2. The smallest particle of an element which always takes part in a chemical reaction, is called a/an __________. (atom/molecule)

Answer 1

• The smallest particle of an element is called an atom.
• It may or may not have an independent existence, but always takes part in a chemical reaction.
• An atom consists of a central nucleus that is usually surrounded by one or more electrons

Therefore, the smallest particle of an element that always takes part in a chemical reaction, is called an atom.