The atom

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  • The Atom
    • Structure of the atom
      • Made from
        • PROTONS
          • concentrated in the nucleas
            • NEUTRONS
              • 0 charge
              • mass no. - atomic no.
          • +1 charge
        • ELECTRONS
          • Located in energy levels
          • -1 charge
          • 1/2000 relative mass
        • NEUTRONS
          • 0 charge
          • mass no. - atomic no.
    • Mass Number
      • Total number of neutrons and protons
      • The bigger number on the periodic table
    • Atomic number
      • The number of protons
        • Equal to the number of electrons in neutral atoms with no overall charge
    • Ions
      • atoms form ions by gaining or loosing electrons
      • Gain a positive or negative charge
    • Isotopes
      • Atoms with the same number of protons but different number of neutrons
      • Same chemical properties
      • Different physical properties
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