As an experienced marker for over a decade, I am sharing my experience of mark scheme protocols.
What to do if a student gives an alternative answer to your mark scheme e.g uses superscripts, gives the wrong formula but balances the equation successfully, should we award a half-mark, gives more than one answer, gives a wrong test for an ion, but gives the right observation…?
What about the correct answer to, say, an empirical formula , but with nonsense working?
You get the point, I’m sure.
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