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Edexcel International GCSE Chemistry
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Links for Chapter 5: Formulae and Equations

The only thing I have found one that might be useful is a interactive balancing equation exercise on the Creative Chemistry site:

Balancing equations from Creative Chemistry

This will give you a random set of fairly easy equations to balance against the clock.

There are also several shareware programs you could have a look at, but the only ones I found were all Windows-based, and I'm not going to include anything on this site which isn't open to everybody. The only other free animations I could find were either chemically flawed or not worth the bother.

The truth is that learning to write formulae and equations is something best done with a bit of paper and a pencil, and anything else is largely a distraction.

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