What is the Difference Between Molecule and Atom?

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The main difference between an atom and a molecule lies in their composition and structure. Here are the key differences between the two:

  1. Composition: An atom is the smallest component of an element, consisting of a nucleus with neutrons and protons, and electrons surrounding the nucleus. A molecule, on the other hand, is a neutral particle made of two or more atoms bonded together.
  2. Structure: Atoms are the smallest particles with properties of an element, whereas molecules are structures containing multiple atoms connected by chemical bonds.
  3. Examples: Atoms include oxygen (O), phosphorus (P), sulfur (S), and hydrogen (H). Molecules, however, consist of two or more atoms like oxygen (O2), phosphorus (P4), sulfur (S8), and water (H2O).

In summary, atoms are the smallest units of an element, while molecules are structures made up of two or more atoms bonded together. Atoms have a nucleus with neutrons and protons, and electrons surrounding the nucleus, whereas molecules have multiple atoms connected by chemical bonds.

Comparative Table: Molecule vs Atom

Here is a table summarizing the differences between atoms and molecules:

Factor Atoms Molecules
Definition The smallest, fundamental part of an element Two or more atoms chemically bonded together
Structure Consists of a nucleus with protons and neutrons, surrounded by electrons More than two atoms, either of the same element or different elements
Stability Atoms are not stable when isolated Molecules are stable when isolated
Subatomic Particles Protons, neutrons, electrons Positively and negatively charged particles can be combined to form a molecule
Examples Oxygen (O), Phosphorus (P), Hydrogen (H), Sulfur (S) Oxygen (O2), Phosphorus (P4), Sulfur (S8), Water (H2O)

Atoms are the smallest units of a chemical element and possess the properties of that element, while molecules are groups of two or more atoms bonded together through chemical bonds. Atoms can be combined into molecules, and molecules can be broken down into individual atoms. Atoms are inherently unstable when isolated, whereas molecules are stable when isolated.