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When finding the gradient of a line we need to first locate any two points, on the line, where we know the x-coordinates and we know the y-coordinates. Now, with these two coordinates we need to find two ...

Markovnikov's rule states that, during electrophilic addition to alkenes/alkynes, the hydrogen atom in the electrophile will be added to the carbon atom in the alkene/alkyne that is bonded to he most hydr...

Chlorine is in Group 7 of the periodic table. Therefore a chlorine atom has 7 electrons in its outer shell. this atom needs one more electron to form an ion with a full outer shell. Hence the ion formed w...

There are many ways to memorise quotes and although it will always be a slog, it can actually be the most fun and rewarding part of revision. Before memorising you've got to organise quotes. A big play or...

The liver is unique in that it has a dual blood supply, both the portal venous system and the systemic circulation. 75% of the blood that flows through the liver is from the portal venous system, venous ...