Search over 10,000 free study notes

After the human embryo implants in the uterus, the site of the developing placenta begins to produce a chemical called human chorionic gonadotrophin (hCG). hCG is a hormone that is found in the blood and ...

We can find out whether lines are perpendicular by comparing their gradients. Each gradient should be the negative reciprocal of the other - for example, 3/2 and -2/3, or 4 and -1/4. (Writing the number a...

I find with speaking exams, although daunting can be broken down into a formula for success! Using variety of stock phrases, idioms, grammar points and intresting facts is something I work on with student...

Here is a summary on the steps to complete these question types. 

1. Determin oxidation numbers 2. Figure out what is being oxidised and what is being reduced. 3. Write half equations. 4. Balanc...

To get higher marks, you have to make sure that you have three clear factors to answer the question. For example, if the essay was "‘The political violence of the extreme right caused the biggest ...