Difference Between Element and Atom: Definition and Differences with Examples Explained

An element is a pure substance made up of only one type of atom, whereas an atom is the smallest unit of an element that retains its chemical properties. While studying chemistry, you will frequently come across the terms element and atom. Although these terms are closely related, they have different meanings and are often confused by students.

This article will help you understand the difference between element and atom, along with their definitions, examples and key differences through simple explanations and an easy-to-understand comparison table.

Table of Contents 

• What is an Element and Atom
• Difference Between Element and Atom
• Frequently Asked Questions on Difference Between Element and Atom

What is an Element and Atom

An element is a pure substance that consists of only one type of atom. It cannot be broken down into simpler substances by ordinary chemical methods. Interestingly, every element has a unique atomic number, which represents the number of protons present in the nucleus of its atoms.

Elements are the fundamental building blocks of all matter. They are arranged systematically in the Periodic Table based on their atomic numbers and chemical properties.

Element	Atom
Oxygen	One oxygen atom

At present, 118 elements are officially recognised, out of which 92 occur naturally, while the remaining have been artificially produced in laboratories.

Elements are broadly classified into:

• Metals are good conductors of heat and electricity (e.g., iron, copper and aluminium).
• Non-metals are poor conductors of heat and electricity with varied physical properties (e.g., oxygen, carbon and sulphur).
• Metalloids show properties of both metals and non-metals (e.g., silicon and germanium).

Some common examples of elements include Hydrogen (H), Oxygen (O), Carbon (C), Nitrogen (N), Sodium (Na), Iron (Fe), Gold (Au), and Silver (Ag).

On the other hand, an atom is the smallest particle of an element that retains all the chemical properties of that element. Although atoms are extremely small, they are made up of even smaller particles known as subatomic particles.

Every atom consists of:

• Protons are positively charged particles found in the nucleus.
• Neutrons are Neutral particles present inside the nucleus.
• Electrons are Negatively charged particles that revolve around the nucleus in different energy levels.

Atoms of the same element contain the same number of protons but may differ in the number of neutrons, forming isotopes.

Atoms combine with one another through chemical bonds to form molecules and compounds, giving rise to the enormous variety of substances found around us.

Some common examples of atoms include the hydrogen atom, carbon atom, oxygen atom, sodium atom, and chlorine atom. 

The difference between element and atom helps students build a strong foundation in chemistry.

Key Benefits

• Builds a strong foundation for atomic structure.
• Helps in understanding the Periodic Table.
• Makes learning chemical bonding easier.

Also Read: Atoms and Molecules

Difference Between Element and Atom

Although an element and an atom are closely related, they are not the same. The following table clearly explains the difference between element and atom.

Element	Atom
An element is a pure substance made up of only one type of atom.	An atom is the smallest unit of an element that retains its chemical properties.
It cannot be broken down into simpler substances by chemical methods.	It consists of protons, neutrons and electrons.
Each element has a unique atomic number and symbol.	Each atom has its own mass, size and electronic configuration.
Elements are represented by symbols such as H, O, Fe and Na.	Atoms are represented as individual particles of these elements.
Elements can combine with other elements to form compounds.	Atoms combine through chemical bonds to form molecules and compounds.
There are 118 known elements.	Every element is made up of atoms, resulting in countless atoms in nature.
Elements are classified as metals, non-metals and metalloids.	Atoms are classified based on their atomic structure and subatomic particles.
The term is mainly used in chemistry and the periodic table.	The term is used in both chemistry and physics while studying atomic structure.

The difference between element and atom is one of the fundamental concepts in chemistry. An element is a pure substance made up of only one type of atom, while an atom is the smallest unit that retains the properties of that element.