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The relative mass of an individual atom of that element

The entire physical world is made up of a relatively few substances, and these exist as atoms and molecules.

The study of what happens when an atom is broken apart is the subject of nuclear physics.

When matters is in a solid state, its atoms or molecules are arranged in definite, fixed patterns

The basic building block of all matter is the atom

Test your knowledge in atoms, molecules and Ions

Avogadro's number, also known as Avogadro's constant, is a fundamental constant in chemistry that represents the number of atoms, molecules, or particles in ...