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show CH₄ with C in the centre and 4 H atoms with bonds to it at 90^o to each other.
A hydrocarbon is a molecule that contains only hydrogen and carbon atoms.

Never in a GCSE syllabus, but still a question I had as a student and one I hear today- something, I feel, is worth going over (Similar in a sense to proving that completing the square works). We use the ...

Equate the two graphs:x²+7x+14=2x+8Rearrange to find a single quadratic:x²+5x+6=0Factorize and solve:(x+2)(x+3)x=-2 x=-3Sub x values into one of the original graphs to find y:(-2,...

The sperm cell is adapted to its function in multiple ways:It has a tail which enables it to swim towards the egg.The middle section of the cell is packed with mitochondria. This allows it to release the ...

Firstly, it's important to understand what the formula is. It is essentially a re-arrangement of a quadratic equation, however the formula can be learnt so that it can be applied quickly within an exam co...