Monthly Archives: September 2009

Clever Chromatography

What if the substances we’re interested in are colourless? There aren’t any spots to see! There are two simple ways of getting around this problem. Using fluorescence If the stationary phase ( the solvent part) has a substance added to … Continue reading

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Separation Techniques

A little bit of revision first of all. A mixture contains two or more substances which have not reacted chemically with each other. A mixture is made of little bits of each substance mixed together. A mixture can be separated by physical methods, a compound can not. For example: A mixture of iron filings and sulphur can be separated by using a magnet to attract the iron. Iron is a magnetic material but sulphur is not. If a mixture of iron … Continue reading

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Kinetic Theory Summary for Y9

Easy stuff for year 9 Chemists and Physicists Useful stuff to start with… Atoms = tiny particles 1 x 10-10m diameter (100 billion across a small fingernail) Molecules = groups of atoms bonded (chemically stuck) together Elements = unique number of nucleons[1], electrons, 118 … Continue reading

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Elements for Year 8’s

This little game is quite fun to play.  If you get to the end AND you can figure out how to get a printout of the ‘Well done…’ like the one below, hand it in to me….Merits available, of course. … Continue reading

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DNA for Beginners

Check out this hot link about DNA which is getting a lot of great publicity. I’m wondering whether to put some Biology on the blog. I’ll be waiting for a few comments to see if people like it and would … Continue reading

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Frictionless Motion – the Linear Air Track

When you have studied the 4.3 Further Mechanics 73-75 handout given out in class, try this… This is a simulation of a linear air track, which you might have seen briefly before in the IG course.  The trollies or carts … Continue reading

Posted in AS and A2 Physics | 3 Comments