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Benzene is made from an aromatic ring consisting of 6 carbon atoms and 6 hydrogen atoms, with delocalised electrons in the centre. Phenol has an additional hydroxy (-OH) group on the ring, and the oxygen ...

Tollens Reagent "silver mirror test". When added to the aldehyde, a silver mirror appears. When added to the ketone, nothing happens.This is because the Tollens Reagent oxidises the aldehyde, wh...

Climate change is a long-term shift in the earth's climate. This can be due to various natural causes but has recently been affected by humans. An example of this is the enhanced greenhouse gas effect. Si...

Take example (x+3)(x-4) We use FOIL - first, outer, inner, last  We multiply each part by the other part. First -> x times x = x² . Outer -> x times -4 = -4x (remember the minus infront o...

Economic growth is an increase in the production of good and services in an economy over time.