atoms and elements

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Mind Map on atoms and elements, created by Gautham Karthick on 10/04/2015.
Gautham Karthick
Mind Map by Gautham Karthick, updated more than 1 year ago More Less
12newtonh
Created by 12newtonh about 9 years ago
Gautham Karthick
Copied by Gautham Karthick about 9 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. nuetrons are neutal (not charged)
            1. electrons are negitive (-)
              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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