Atoms are made of protons, neutrons and electrons. The neutrons and protons make up the nucleus. The electrons orbit the nucleus

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​Atoms

Molecules are atoms that are bonded together to form some sort of chain or structure. Water is two hydrogens boded to one oxygen.

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​Molecules

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Ions are atoms or molecules that have gained or lost an electron.

A positive ion is called a Cation

A negative ion is called a Anion​

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​Ions

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