Language used in matter

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Atom

The simplest uncharged particle that is able to take part in a chemical reaction.

Molecule - 2 or more atoms that are chemically bonded.

Element - Made up of the same kind of atoms.

Compound

Made up of two or more kinds of atoms.

Molecule

Made up of two or more atoms that are chemically bonded.

Empirical Formula - A formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms.

The Mole - Mole Definition in Chemistry. A Mole is defined as a chemical unit, defined to be 6.022 x 10^23 ( Avogadro's Constant) entities.