IGCSE Chemistry Covalent Bonding PPT

This PowerPoint Presentation covers most of the requirements for the Covalent Bonding unit for Edexcel IGCSE Chemistry in a clear and coherent manner.

These slides may also be useful for other exam boards, such as AQA, WJEC, CIE, etc., if modified after download.

Specification statements covered include:

• 1.31 describe the formation of a covalent bond by the sharing of a pair of electrons between two atoms.
• 1.32 understand covalent bonding as a strong attraction between the bonding pair of electrons and the nuclei of the atoms involved in the bond.
• 1.33 explain, using dot and cross diagrams, the formation of covalent compounds by electron sharing for the following substances:
  Hydrogen, chlorine, hydrogen chloride, water, methane, ammonia, oxygen, nitrogen, carbon dioxide, ethane, ethene.
• 1.34 recall that substances with simple molecular substances are gases or liquids, or solids with low melting points.
• 1.35 explain why substances with simple molecular structure have low melting points in terms of the relatively weak forces between the molecules.
• 1.36 explain the high melting points of substances with giant covalent structures in terms of the breaking of many strong covalent bonds.