7558527
Descripción
Mapa Mental por Chari Lewis, actualizado hace más de 1 año
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Creado por 12newtonh
hace casi 10 años
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Copiado por Danoa400
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Copiado por Chari Lewis
hace casi 8 años
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atoms and elements
- the nucleus
- the nucleus is really small compared to
the whole atom
- its made up of protons and neutrons
- the nucleus is really small compared to
the whole atom
- the electrons
- electrons surrond the
nucleus in shells (energy levels)
- electrons surrond the
nucleus in shells (energy levels)
- protons are positive(+)
- neutrons are neutral (not charged)
- electrons are negative (-)
- the relative masses of parts of an atom
- protons and neutrons have the
same mass (e.g.1 each)
- the mass of electrons is much
smaller (e.g. very ting)
- protons and neutrons have the
same mass (e.g.1 each)
- there are always be the same number
protons as electrons (e.g. 2 positive
protons = 2 negitive electrons)
- 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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