Chemistry Quiz on Atomic Structure

The number of protons in the nucleus of an atom. It determines the element's identity.

The average mass of an atom of an element, taking into account the abundance of its isotopes.

Atoms of the same element with the same number of protons but different numbers of neutrons.

The smallest unit of an element that retains the chemical properties of that element. Composed of protons, neutrons, and electrons.

The positively charged subatomic particle found in the nucleus of an atom. It determines the element's identity.

The neutral subatomic particle found in the nucleus of an atom. It contributes to an atom's mass but has no charge.

The negatively charged subatomic particle that orbits the nucleus of an atom. It is responsible for chemical bonding.

A positively charged ion formed by losing electrons.