Gcse chemistry Bonding


Harry Plested
Mind Map by Harry Plested, updated more than 1 year ago
Harry Plested
Created by Harry Plested almost 8 years ago

Resource summary

Gcse chemistry Bonding
  1. Covalent
    1. Non metal and Non metal
      1. Share Electrons no ions formed
        1. The outer shells overlap and mean the nuclei are attracted to each other
          1. Simple Molecular
            1. only small amounts of atoms eg CO2
              1. So diatomic substances would be simple molecular bonds
              2. Low melting and boiling points
                1. Hence most are gases or low boiling point liquids or low melting point solids
                  1. When state changed however bond tends not to be broken
                2. Giant covalent
                  1. Lots of atoms
                    1. High Melting/Boiling point
                      1. Eg. diamond
                        1. Graphite
                          1. Low attractive forces between layers
                            1. Conducts electricity only valence electrons used in bond so inner is de-localised
                        2. Ionic
                          1. Metal and Non-Metal
                            1. Electrically charged
                              1. High Melting point
                                1. Exact temperature depends on strength of the bond between the elements forming the compound
                                2. Eg. NaCl
                                  1. Form Na+ and Cl-
                                3. Metallic
                                  1. Metal and metal
                                    1. 3d lattice structure
                                      1. positive ions arranged in regular pattern in a "sea of electrons"
                                        1. Valence electrons detached and delocalised throughout the structure
                                          1. Conduct electricity
                                            1. Malleable and ductile
                                              1. High Melting points
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