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An experiment involving five fuels, to see which fuels contain most energy. Aim: To find out which of five chosen fuels; Ethanol, Propan-1-ol, Butan-1-ol, Hexan-1-ol and Octan-1-ol gives out the most heat energy. Introduction: A chemical bond is an attraction between atoms brought about by a sharing of electrons between to atoms or a complete transfer of electrons. There are three types of chemical bonds: Ionic, Covalent and Polar covalent. In addition chemists often recognize another type of bond called a hydrogen bond. Ionic bonds arise from elements with low electro negativity (almost empty outer shells) reacting with elements with high electro negativity (mostly full outer shells). In this case there is a complete transfer of electrons. Covalent bonds involve a complete sharing of electrons and occur most commonly between atoms that have partially filled outer shells or energy levels. Thus if the atoms are similar in negativity then the electrons will be shared. These...

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