Chemistry C2

Descripción

A*-C grade
Sophie McDermott
Mapa Mental por Sophie McDermott, actualizado hace más de 1 año
Sophie McDermott
Creado por Sophie McDermott hace alrededor de 8 años
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Resumen del Recurso

Chemistry C2
  1. Structures & Bonding
    1. An atom is made up of subatomic particles
      1. Protons
        1. Charge : +1
        2. Neutrons
          1. They have no charge
          2. Electrons
            1. The first shell can hold 2 electrons
              1. The second & third shell can hold 8 electrons
                1. The forth shell can hold 18 electrons
                  1. Charge : -1
                2. Ionic bonding
                  1. When atoms gain or lose electrons
                    1. Happens between a metal and a non-metal
                      1. Ionic compunds are very strong because the positive and negative ions are attracted to each other
                        1. Metal gets positive charged but the non metal gets negatively charged
                          1. Have high melting and boiling points
                            1. Soluable in water
                              1. Bad conductors as solid
                              2. Covalent bonding
                                1. Between 2 non-metal
                                  1. Poor conductors
                                    1. Exist as liquid or gasses at room temperature
                                      1. Share electrons
                                        1. Low melting points
                                          1. All atoms gain a full outer shell
                                            1. Between the bonds are intermolecular forces which are very strong
                                            2. Metallic bonding
                                              1. Between 2 metals
                                                1. There are free electrons
                                                  1. Become positive charged
                                                    1. Donate their electrons
                                                      1. Very high boiling and melting points
                                                        1. Good conductors
                                                          1. Aren't very soluable
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