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Crude oil is a mixture of different hydrocarbons, which all have different lengths and must be separated by length into different useful 'fractions'. Fractional distillation achieves this by using the fac...
The mole is a concept that you'll see everywhere in chemistry, from GCSE through A level. Although this is the case, it can be very easy to lose sight of what it actually is and why we use it, as your tea...
Fractional distillation relies on different fractions in the organic mixture having different boiling points. The difference in these boiling points could be caused by several things but the main determin...
bond making is exothermic, bond breaking is endothermic. It takes more energy to break the bonds than the energy released in making new bonds
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