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The nucleus contains positively charged protons which attract the negative electrons, the first ionisation energy is the energy required to overcome this attraction and remove 1 electron As you go down a ...

In my revision for my English Lit A Level, I used quote banks to organise my ideas and make essay planning more efficient. These are tables in which the left side shows themes within the text and the top ...

f(x) = x³ + 2x² - x - 2 Use the factor theorem to test for f(1) = 0 f(1) = 1³ + 2*1² - 1 - 2 = 0 Therefore x = 1 is a solution and (x-1) is a factor of f(x) Now...

The calling of the first crusade by Pope Urban II in 1095 at Clermont can be seen as a response to the many pleas sent by the Byzantine Emperor, Alexios Comnenus. This was after vast swathes of land had b...

When we answer this question we need to focus on the differences in interactions that create the tertiary and quaternary structure of fibrous and globular proteins. For example, fibrous proteins are chara...