Atomic Structure - Atoms C1 Unit 1

Atomic Structure

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  • Atomic Structure ~ Atoms
    • Nucleus
      • At the centre of the atom.
      • Protons have a positive charge.
      • Neutrons have no charge.
    • Electrons
      • Nucleus
        • At the centre of the atom.
        • Protons have a positive charge.
        • Neutrons have no charge.
      • Tiny negatively charged particles that move around the nucleus
    • No overall charge
      • Number of protons is equal to number of electrons and their charges are equal and opposite.
    • Atomic Number
      • Arranged in order of atomic numbers in the periodic table.
      • Is the number of protons of the element.
      • Number of electrons in an atom of the element.
    • Mass Number
      • Total number of particles in the nucleus of an atom (protons + neutrons)
    • BBC Bitesize
    • Key Words: proton, neutron, atomic number, mass number
    • Why are atoms neutral?
      • They have equal number of protons and electrons.
  • Key Words: proton, neutron, atomic number, mass number

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