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More reactive halogens displace less reactive halogens. The more reactive halogens are those at the top of the group, as their outer electron shells (negatively charged) are closer to the nucleus (positiv...

Chi-squared is about establishing whether the difference in results between groups is likely to be due to chance, or due to some genuine difference in the groups' properties. It aims to answer the questio...

The iodine test - use a dropper to apply a little iodine onto a small sample of the food. If starch is present, the iodine will change colour from orange/brown to blue/black.

Cambridge interviews are nowhere near as scary (or weird!) as they are often reputed to be. Mostly, tutors are looking to see that you actually care about the subject in addition to being good at it. I fo...

The risk assessment lets the examiners know how much thought you have put into both the planning and the execution of your project. While the risk assessment doesn't go into the main body of your project,...