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Often the question will ask you to use a particular method to integrate something, but sometimes they will not and you will have to recognise for yourself the best way to do it. There is often more than o...

It's important to look at the number of marks awarded for an answer, this can help you structure your answer and think about what will be on the marking scheme. Here a simple statement of an application o...

Ionisation energy decreases down the group. This is because the atomic radii also inrease down the group, making the removal of an electron from the valence shell of an atom easier, as electrons located f...

Two key approaches used in psychology are the behavioural approach and the cognitive approach. The behavioural approach sees behaviour as learned, whereas the cognitive approach sees behaviour as the resu...

Treat both numbers as whole numbers - i.e 76 x 325 (remember at the end that there are still decimals!) 76 x 325 = 24,700 ( This will be explained by using the two lines by 1st method or method that the s...