Chemistry- bonding

Descripción

GCSE (CHEMISTRY) Seperate Science Mapa Mental sobre Chemistry- bonding, creado por Victoria Mahon el 12/02/2015.
Victoria Mahon
Mapa Mental por Victoria Mahon, actualizado hace más de 1 año
Victoria Mahon
Creado por Victoria Mahon hace casi 10 años
49
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Resumen del Recurso

Chemistry- bonding
  1. when chemical reactions take place, chemical bonds are made
    1. this happens when an atom either shares or gains electrons
    2. ionic bonding concept
      1. gaining elecctrons
        1. if you gain you become negative
          1. if you loose you become positive
      2. covalent bonding
        1. strong covalent bonds within the molecules
          1. weak forces of attraction between the molecule
            1. sharing electrons
        2. giant covalent structures
          1. diamond
            1. high melting and boiling points
              1. diamonds a form of carbon that has a giant, rigid covalent structure, each carbons make four bonds.
                1. large number of covalent bonds resluts in high boiling/melting points- makes it hard
            2. strong covalent bonds between the two carbon atoms
            3. Graphite
              1. covalent bonds between 2 carbons
                1. weak intermolecular force
                  1. graphite only makes three bonds
                    1. layers can easily slide over eachother
              2. Silicon Dioxide
                1. strong covalent bonds
                  1. salt
                    1. very high melting point
                2. Afullerene
                  1. carbon atoms form fullerenes.
                    1. hexagonal rings
                      1. covalent bonds
                        1. no giant covalent structures
                          1. simple molecules
                  2. Giant ionic substances
                    1. mixture of positive and negative charged ions
                      1. high melting points
                        1. lot amount of energy to break it
                          1. must be dissolved in water for it to conduct
                    2. metals
                      1. giant structure
                        1. delocalised electrons surround positive ions
                          1. Hold structure allow the atoms to slide over eachother
                            1. metals can be shaped or bent
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