... by the firm of Spiring Enterprises under the name of Molymod. All single covalent bonds are of the same length in these models. The information sheet supplied by Spiring, amended and reproduced with permission is available on the Learn server and is included in each kit. Note the code given to each atom type in the contents table: this will be used in the diagrams for the laboratory exercise. Where double bonds are delocalised, as with aromatic ring compounds, there is no point in attempting to distinguish them by using double bonded atomic centres as the rings will be planar. Only use such double bonds when necessary to draw attention to a particular double bond. Model Building For this practical you will work in pairs. Ensure that you are familiar with all the ideas and play a full part in constructing the models. At suitable junctures, models may be made by ...

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