atoms and elements

Descripción

Primary Science Mapa Mental sobre atoms and elements, creado por richieroomarcellin el 28/04/2016.
richieroomarcellin
Mapa Mental por richieroomarcellin, actualizado hace más de 1 año Más Menos
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richieroomarcellin
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Resumen del Recurso

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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