Chemistry Science

Difference between Atom and Molecule

Main Difference

The important between atom and molecule is that atom is made up of neutrons, protons and electrons whereas molecule refers again to the group of atoms that are bonded collectively by means of covalent bonding or ionic metallic.

Comparison Chart

Basis of DistinctionAtomMolecule
DefinitionAtom refers again to the smallest particle of parts that accommodates the properties of theMolecules focus on with the group of atoms or combination of atoms
DependencyMay or couldn’tYes
Properties of MatterMay or couldn’tYes
ClassificationNoTwo: homo-atomic and hetero-atomic
StrengthBasic developing blocks of matterMore molecules in human physique than stars throughout the universe
ExistenceIt cannot exist independentlyIt can exist independently
ExamplesOxygen, hydrogen and nitrogenH2, NO, and so forth.


atomAtom refers again to the smallest particle unit of the straightforward matter that has the properties of a chemical . All form of gases, solids, liquids and plasma are composed of ionized or neutral atoms. These are often very small in measurement and are unable to be seen via naked eyes and magnifying microscope. The measurement of an atom may very well be spherical ten-billionths of a meter. If talk about their boundaries then these have not well-defined boundaries. With the gradual enchancment of physics, atomic fashions have built-in quantum guidelines to make clear increased and predicted conduct of the atom. Every atom composed of plenty of electrons certain to the nucleus. The nucleus of an atom is fabricated from plenty of protons and often has an similar number of neutrons. The nucleus of an atom may also be surrounded by the electrons that are negatively charged particles. An atom may very well be negatively or positively charged counting on the overwhelming majority of the particles. When these negatively or positively atoms bond collectively to sort molecules, the bonds are formed by the electrons filling up the outer orbits of the atoms. There is not any bonding in an atom as atoms exist independently.


moleculeA molecule is the smallest particle of an electrically neutral group that accommodates the chemical properties of that compound or . These are made up of the atoms that are held collectively by chemical bonds. These are utterly distinguished from ions as a result of lacking value. The atoms of most of the chemical compounds quickly bond with totally different atoms to sort molecules. These can fluctuate in measurement and complexity. These always keep in motion. In liquids and solids, they’re packed tightly collectively. In the steady state, their motion may very well be likened to quick vibration. In the liquid state, these switch freely amongst each other in a type of slithering vogue. In gasoline state, their density is way much less as as compared with steady and liquid of the similar chemical bond and switch far more freely as as compared with liquid. As as compared with an atom, the molecule has the potential to exist by itself that is because of the electron presence throughout the atom. In the molecule, the atom may very well be regular solely in case of availability of a sufficient number of electrons. According to the Kinetic Theory of Gasses, “molecule is often used for any gaseous particle regardless of its composition. Due to monoatomic molecular structure, Noble gas atoms are also considered as molecules.”

Key Differences

  • An atom is the smallest particle of an whereas the molecule is the smallest particle of the compound.
  • Atom may or couldn’t exist independently whereas molecule always exists independently.
  • Atom may or couldn’t have properties of a matter whereas molecule always possesses properties of matter.
  • Molecules are composed of atoms atom is made up of neutrons, protons, and electrons.
  • An atom is also molecule on account of independently existence. Atoms are present in a monoatomic molecule on account of stability components like noble gasses and helium whereas molecule cannot say that atom.
  • Atoms have no further varieties whereas molecules have two kinds that are homo-atomic molecules and heteroatomic
  • Atoms have no bonding the least bit whereas molecules have inter-molecular forces and intramolecular
  • The affiliation of atoms may very well be seen with x-rays whereas in molecules, interaction permits the human being to maneuver, sense, reproduce and quite a lot of totally different points.
  • Three a number of forms of an atom are a hydrogen atom, deuterium atom, and a tritium Two sorts of molecule are straightforward molecule and superior molecule.
  • Atom cannot exist independently whereas molecule can exist independently.
  • An atom of an cannot reside throughout the free state whereas molecules can reside throughout the free state.
  • Mass of an atom can’t be determined just about whereas the sum of plenty of the particular person atoms constitutes the mass of a molecule.
  • Atoms can purchase and lose electrons to sort ions whereas molecules can’t purchase or lose electrons to sort ions.
  • It is unattainable to see an atom via naked eye and even via a magnifying The molecule moreover cannot be seen via naked eye nevertheless may very well be seen via a extraordinarily magnifying microscope.
  • Atom cannot be further divided whereas molecule can further be divided to supply explicit particular person atoms.
  • Atom has a nuclear attraction or bonding with it whereas molecule has a chemical attraction or bonding between the atoms.

Video Explanation

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