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atoms and elements

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GCSE SCIENCE ADDITIONAL Mind Map on atoms and elements, created by Danoa400 on 18/03/2015.
Danoa400
Mind Map by Danoa400, updated more than 1 year ago More Less
12newtonh
Created by 12newtonh about 10 years ago
Danoa400
Copied by Danoa400 about 10 years ago
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Resource summary

atoms and elements
  1. the nucleus
    1. the nucleus is really small compared to the whole atom
      1. its made up of protons and neutrons
      2. the electrons
        1. electrons surrond the nucleus in shells (energy levels)
        2. protons are positive(+)
          1. neutrons are neutral (not charged)
            1. electrons are negative (-)
              1. the relative masses of parts of an atom
                1. protons and neutrons have the same mass (e.g.1 each)
                  1. the mass of electrons is much smaller (e.g. very ting)
                  2. there are always be the same number protons as electrons (e.g. 2 positive protons = 2 negitive electrons)
                    1. the number of protons there are dicides what type of atom it is (e.g. hydrogen = 1 proton, helium = 2 protons)
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