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A direct object changes the past participle, an indirect one does not. A simple sentence which you can remember to help with this is 'I gave it to you'. 'It' is the direct object as it is the thing being han...

The carbonyl bond is polar as the oxygen atom is more electronegative than the carbon atom. This results in a partial positive charge on the carbon and a partial negative charge on the oxygen. A nucleophile ...

If you wanted to program a function into a computer, it knows how to calculate polynomials but not any function that you put into it. For example, it won't know what to calculate for sin(x), but it would kno...

The key to getting top marks for your essay is ensuring that the structure is clear and consistent. For most essays, the structure would consist of a topic sentence/ point e.g. 'Shakespeare presents Iago as ...

The heart plays important roles in supplying oxygen and removing toxic waste to/from our body. In basic concepts, the heart is made up of 4 chambers, two on the top and two at the bottom, the top are known a...