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The first step is the draw out the molecules in question to understand what is happening in the reaction. You can see that the bromine atom has been substituted for an alcohol group (OH) in the enthane mo...

The imperfect tense is used for actions that were repeated in the past or to describe a state in the past. eg. when I was younger I used to dance - cuando era pequena bailaba. the preterite tense is used ...

Unlike in English, the adjective generally comes after the noun it describes in French for example to say "the red car", you would say "la voiture rouge". However, there are some commo...

The best way to revise Maths is by completing questions by topic then once confident, moving on to past papers.

A hypothesis test can be thought of as being somewhat similar to a court case. In a court case, we want to find out whether someone is either guilty, or not guilty, so we assume that they are not guilty, ...