... from the top of the crucible (when the crucible is directly under it). 3.Remove the crucible from its position, carefully pipette approximately 1g of methanol into it and replace the lid (this is to reduce any loss through evaporation). 4.Tare the balance and record the mass of the crucible, its lid and the contents. 5.Next place the crucible directly under the copper beaker, surround with heatproof mats (as to provide a draught shield) and again (to make sure no heat has transferred from the copper beaker to the water) take the water temperature. 6.Remove the lid from the crucible, ignite the contents, surround the open side with a heatproof mat and allow the fuel to burn away. Stir the water and record the highest temperature reached. 7.Finally, reweigh the crucible (including the lid) and record the final mass. 8.Repeat the procedure with the other three alcohols remembering to: * use fresh ...

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