Category Archives: Chemistry

IG Chemistry notes

Moles – Percentage Purity and Yield

The yield is the amount of product you obtain from a reaction. Suppose we own a factory that makes fertilizers. We will want the highest yield possible, for the lowest cost. If we are making medical drugs then the yield will still … Continue reading

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PhET Science Simulations

There weren’t many of year 11 in today. So those of us that were here amused ourselves with this site. Here’s one to start you off but there are lots more to try in chemistry and biology as well as physics. Click … Continue reading

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Qwiki

This is a very good website for almost everybody. It has nice, clear explanations for all kinds of stuff – chemistry, physics, biology, maths…whatever.  Some of the stuff is a bit high-level but give it a go anyway. Click on the … Continue reading

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Khan Academy

Click on the image. This site is making hot news worldwide. What do you want to know? It’s all here as short video tutorials. Maths, Physics, Chemistry – almost anything to any level is either online or being rolled out. … Continue reading

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Redox Reactions

Redox (reduction-oxidation) reactions are a family of reactions that are concerned with the transfer of electrons between reactants. Redox reactions are a matched pair – you don’t have an oxidation reaction without a reduction reaction happening at the same time. … Continue reading

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Revision Tips: Periodic Table

This is NOT a substitute for learning, just a few little hints and tips. Groups go DOWN (similar properties), periods go ACROSS (properties change from metal to non-metal) You should be able to draw an electron configuration up to a … Continue reading

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Hints and Tips: Getting it Right in Paper 6

READ ALL the question first. You have plenty of time. Imagine the apparatus in front of you. Measurement on-site. Make sure you have a good quality ruler, able to measure accurately to 1mm. Decide where a measurement is to be … Continue reading

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