... before and after the experiment of alcohols. Fixed Variables (Things that you keep the same) the things that I have chosen to keep the same in each individual experiment to keep it a fair test, is to keep the same amount of water being heated, the same copper calumeter (as it may very in conductivity), the height of the calumeter, and the same amount of time for each experiment. This would help me to compare and analyse the results of the individual experiments. Hypothesis: My prediction for this experiment on investigating the energy produced by different alcohols is that, the longer the hydrocarbons in the chain of the alcohols, the more heat it will produce. As the alcohols are being lit by the waxy splint that produces heat, it will also give out oxygen and water as well as heat energy to heat the water, which will crack the hydrocarbons into simpler molecules ...

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