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Group 1 metals all have one outer electron, which is responisble for their properties. As you go down the group: the metals become more reactive. This is due to the increased number of electron shells which ...

Before you try to work out the probability, establish the following answers from the question and jot them down. How many items are there in total? After something is chosen, is it put back before the next c...

Look for the corresponding letters to each number. So, as an example those with a. remember that the + or - before it tells us whether it is to be added or subtracted There are 2a-a+3a so that = 4a With b th...

This question relies on knowledge of algebraic expressions and highest common factors. What is the highest common factor which goes into the expressions 8y and 4y^2. The answer is 4y. This is then taken on t...

Dickens presents Scrooge as an outsider in this extract by the way he is described. He uses pathetic fallacy in the first paragraph to represent how Scrooge is ‘colder’ than anything weather can throw at him...