Chemistry C2.1

  • Created by: juddr12
  • Created on: 14-04-14 18:45

C2 1.1

Compounds form when two or more elements react. The atoms can share, give or take electrons depending on the type of chemical bonding. When atoms of non-metals join together, this is named covalent bonding. When non-metals react with metals, this is named ionic bonding. In ionic bonding, if a metal loses electrons, it becomes a positive ion. When gases gain electrons, it becomes a negative ion.

C2 1.2

Ionic bonding holds oppositely charged ions together. The ions pack neatly, because of the strong electrostatic forces that occur between them.

e.g. NaCl = a cubic lattice/structure

The ratio of the amount of atoms depends on the charges of the ions. For example, calcium ions have a positive 2 charge, while chloride have a negative 1 charge. Therefore, CaCl2 is created to neutralise the charge of


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