What Is The Difference Between Molecule And Compound?

Is it getting very hard for you to make difference between molecule and compound? Don’t worry about it, today I will tell you about how simple it is. We will discuss what are these molecules and compounds? You will come to know what is the definition, examples of compound vs molecule, etc. Read till last so that you will not miss any of the important points. Let us understand the difference between molecule and compound without making any delay.

What’s Difference Between Molecule And Compound?

The difference between molecule and compound is very simple to understand. However, let us know about what is a molecule and what is a compound before seeing the differences. This will put more value to our understanding and helps us to easily differentiate them.

A molecule is made up of atoms and a compound is made up of molecules. Both things may look related to each other but it is very important to study their difference individually.

So let us know about them quickly by seeing what is the major difference between molecule and compound. I have described the definition of them further.

What Is A Molecule?

A molecule is a substance that is made up of at least two or more atoms. These atoms of an element are connected with the help of chemical bonds. A molecule is a small unit of a compound. It can promote the characteristic of a compound.

What Is A Compound?

A compound is a molecular substance that is made up of two or more and same or different atoms. These atoms are linked with each other by chemical bonds within a particular ratio or structure. There are three different bonds such as covalent, ionic, and metallic bonds.

A compound is constructed of different molecules in general. It is said that every compound can be a molecule however every molecule can not be a compound. 

Difference Between Compound And Molecule

Now let us learn about the difference between compound and molecule one by one for better understanding.

  • Definition

The definition will help us to know the meaning of the compound and molecule.


The molecule can be defined as a chemical structure in which two or more only same atoms are connected chemically.


The compound can be defined as when two or more different or same elements are combined by chemical bonds.

  • Examples

It is easy to study the difference between molecule and compound with examples. Below are some of the common examples of both.


Oxygen, Ozone, Dinitrogen, Hydrogen are examples of the molecule.


Different examples of compounds are Calcium carbonate, Nitric Acid, Water, Salt, etc.

  • Properties

Properties also make a difference between molecule and compound in chemistry. So let us see what is their properties.


Molecules can be in two forms such as heteronuclear molecules and homonuclear molecules. The heteronuclear molecules 


Compounds have variable composition and no definite properties. You can separate them by physical methods.

  • Stability

Stability is understood based on a difference between molecule and compound and element in both. Further, I have described it generally.


The stability of a molecule depends upon the atoms in it. Sometimes they can be stable while sometimes they can be unstable.


The compounds are more stable than the molecules because of their structural arrangement. This helps compounds to possess physical structure.

  • Types of bonds

Yes, you heard it right there are different bonds in the molecule as well as compound.


Molecules have two bonds mainly ionic or covalent. These bonds help to links atoms or groups of atoms with each other.


In the compound, bonds can be ionic, metallic, and covalent. This tells us the difference between compound and element or molecule. It is considered as all the compounds are molecules, but all molecules are not compound.

  • Visibility

The visibility states the difference between atom, molecule and compound to understand their chemistry.


Molecules are made from the bonding of two or more atoms. Hence, they are not visible to our naked eyes.


Compounds are made from molecules and elements which helps them to have a physical structure. Hence compounds are visible and can be seen without naked eyes.

  • Structure

Below is the structure and differences between molecule vs compound. Please read it carefully.


Here to know the difference between molecule and atom the oxygen is the best example. In oxygen, you will find two oxygen atoms bonded with each other and the structure is O2.


In the compound, the difference between atom and element should be known. So the common salt had one sodium atom and one Chloride atom. Which can be denoted by Na and Cl respectively. When these two elements are combined they form Sodium Chloride that is NaCl.

  • Formula

The formula is one important factor that helps us to understand the difference between compound and mixture.


Nitrogen is a molecule, as there are two atoms of nitrogen bonded the formula is N2.


Sugar is a compound, as it contains carbon, hydrogen, and oxygen atoms. The formula of sugar is C12H22O11

One more example of a compound is water, which contains hydrogen and oxygen and the formula is H2O.

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Is Water A Molecule Or A Compound?


Water is a compound because it is made up of water molecules. There is no such thing as water atoms. Water molecules are made of hydrogen and oxygen atoms, in the definite proportion of two hydrogens for one oxygen.

Is Water A Molecule?

Atoms join together to form molecules. A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom. That’s why water is sometimes referred to as H2O. A single drop of water contains billions of water molecules.

Is Oxygen A Molecule?

Oxygen is found naturally as a molecule. Two oxygen atoms strongly bind together with a covalent double bond to form dioxygen or O2.

Is Milk Is A Compound?

Milk is a compound.

Is Compound And Molecule The Same?

No. A molecule is a group of two or more atoms held together by chemical bonds. A compound is a substance which is formed by two or more different types of elements which are united chemically in a fixed proportion. All molecules are not compounds.

What Are The 4 Types Of Molecules?

There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids), and each is an important component of the cell and performs a wide array of functions. Combined, these molecules make up the majority of a cell’s mass.

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In this topic, we learned the difference between molecule and compound in chemistry. How they are related but have many differential points. I told their definition, examples, structure, formula, etc of molecules and compounds. You will now not get any issues while distinguishing between compounds and molecules in the future. I explained the factors related to the molecules and compounds which will be helpful for you. We understood how atoms and elements create the difference between molecule and compound.


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