Author Topic: Unit 3B chemistry written alternative  (Read 1477 times)

Offline merin teresa

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Unit 3B chemistry written alternative
« on: January 05, 2012, 06:18:34 pm »
Does any one know how to answer the unit 3 written alternative paper for chemistry AS?
i have my exam on monday and im freaking out
what experiments do we focus on, how do we write the procedure
how do we write straight to the point?
what are the key points to remember?
im using the text book "Edexcel AS Chemistry 2nd edition " By George Facer- is this all i need or more reference?

and the calculation part does anyone know how to calculate % purity of a solid in a compound?

thanks for all ur help guys!!