Mass Charge
Proton 1 +1
Neutron 1 0
Electron 1/2000 -1
Atomic Number - The number of protons in the nucleus
Atomic Mass - The number of protons and neutrons
Element - An element not composed of other elements
Ion - An atom or molecule with a net electric charge due to the loss or gain of one or more electrons
Molecule - A group of atoms bonded together
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