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The first step is to expand the (2x+4y)^2 bracket. Start by writing out (2x+4y)(2x+4y) and multiply out. A simple way to do this is by using the 'foil' method - multiply the 'first' terms in each bracket,...

In terms of experience, some people say the more you do the better but I believe that it is more what you get out of the experience than how many you do. It is better to do 1 or 2 and learn a lot than do ...

The arrows represent the movement of a lone pair of electrons. For example, if a mechanism involves an oxygen atom forming a bond with a proton (hydrogen ion), then the oxygen would ‘donate’ a lone pair t...

First, the DNA Helicase enzyme ‘unzips’ the two stranded DNA by breaking the hydrogen bonds present between the complimentary base pairs on the two opposing strands. Then this leaves two exposed strands, ...

A cadence is made up of two chords which signal the end of a musical phrase. There are four different kinds:The Perfect Cadence is really recognisable because we hear it all the time! It is a chord V foll...