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Search results with tag "Mark scheme january 2013"
Advanced Subsidiary GCE Unit F321: Atoms, Bonds …
www.ocr.org.ukF321 Mark Scheme January 2013 5 Question Answer Marks Guidance 1 (a) (i) Atom(s) of an element AND with different numbers of neutrons (and with different
Mark Scheme for January 2013 - ocr.org.uk
www.ocr.org.uk4723 Mark Scheme January 2013 6 Question Answer Marks Guidance 3 (a) Substitute 3t in 21t and obtain value 5 B1 not awarded for final 5 nor for 5 Substitute 3t in 21t and apply modulus correctly to any negative value to obtain a positive value M1 with no modulus signs remaining