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In A-level books, each is separated into several topics with short lists of vocabulary. By talking about these topics, I will ask you to write any important new wword down and ask you to learn them at ...

Nouns and pronouns are very similar, so be careful not to get them confused!

A noun is an object or a thing, for example:
'The cat is sleeping.'
Here the noun...

At first this looks quite daunting as it combines a number of different indices (powers) and a fraction. 

The rules for indices are just something that you have to learn - so don't worry ...

It's experimentally observed that ionisation energies have a general increase as one moves across the period: the first ionisation energy of lithium is ~500 kJ mol‑1, whereas that of n...

So, constructive waves are the waves that build up the beaches. They have a large 'swash', which means they can carry deposits of sand and other materials far up the beach. They are much lower than des...