The smallest particle of an element that retains the characteristics of the element is called a

• A. Element
• B. Atom
• C. Molecule
• D. Neutron

Answer: (B)

Atoms are the smallest units that retain the identity and chemical properties of an element. They form the basic building blocks of matter, with a nucleus containing protons and neutrons and electrons orbiting around it. This structure gives the element its characteristic behavior, including how it bonds with other atoms. A molecule, by contrast, is made when two or more atoms join together, which is a larger unit than a single atom. A neutron is a subatomic particle inside the nucleus that contributes to atomic mass but does not define the element’s fundamental properties by itself. An element refers to the pure substance composed of one kind of atom. So the smallest particle that still behaves like the element is the atom.