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OCR CHEMISTRY B 2013 B742 MARK SCHEME

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B742-01 MS Jun13 - OCR
B742/01 Mark Scheme June 2013 7 Question Answer Marks Guidance 8 (a) red / pink (1) 1 (b) add alkali / sodium hydroxide (from the burette) to acid (1) ( sodium hydroxide is added ) until end point is reached (1) add indicator or named indicator (1) 3 allow or until a colour change is [PDF]
Ocr Chemistry B 2013 B742 Mark Scheme
b742/02 chemistry b unit b742: chemistry modules c4, c5, c6 (higher tier) mark scheme chemistry b - ocr ocr report to centres – june 2013 1 overview this was the first series in which candidates could obtain a grade for gcse chemistry b, j264. it was also the first time that candidates could take the b742 and b743 components.[PDF]
General Certificate of Secondary Education Unit B742/02
B742/02 Mark Scheme June 2013 8 Question Answer Marks Guidance 4 D (1) contains a sulfate because of white precipitate with barium chloride (1) contains a chloride because of white precipitate with silver nitrate (1) 3 If any other letter given = 0 marks If no letter given maximum of two marks allow barium chloride is a test for sulfate[PDF]
GCSE Chemistry B - OCR
B742/01 Mark Scheme June 2016 7 Question Answer Marks Guidance 3 a i aluminium and boron (1) 1 both required allow Al and B (1) ii potassium and bromine (1) 1 both required allow K and Br (1) iii silver (1) 1 allow Ag (1) b any two from: arranged elements in order of atomic mass (1)[PDF]
Ocr Chemistry B F331 May 23rd 2013
Ocr Chemistry B 2013 B742 Mark Scheme 173 255 205 43. OCR A Level Chemistry Past Papers Revision Science. Ocr Physics Test Thursday 23rd May 2 / 15. 2013 PDF Download. OCR Salters All chemical reactions The Student Room. OCR Chemistry Salters F331 Get Revising. ocr physics test thursday 23rd may 2013[PDF]
GCSE Chemistry B - pdf
B742/02 Mark Scheme June 2014 2 Question Answer Marks Guidance 1 a melting point of sodium – any value between 90 and 130 (1) atomic radius of rubidium – any value between 0 and 0 (1) 2 b 2Na + 2H 2 O 2NaOH + H 2 correct formulae (1) balancing – dependent on correct formulae (1)[PDF]
GCSE Chemistry B - Revision Science
B742/02 Mark Scheme June 2016 7 Question Answer Marks Guidance 3 a appearance of iodine – grey solid / black solid (1) melting point of astatine – anywhere in the range 200 to 310 (1) boiling point of fluorine – anywhere in the range -80 to -150 (1) 3 both colour and state required b [PDF]
GCSE Chemistry B - OCR
B742/02 Final Mark Scheme June 2015 5 Question Answer Marks Guidance 1 a i W (1) 1 allow sodium / Na ii Z (1) 1 allow argon / Ar iii W and Y (1) 1 both required but order is unimportant allow sodium or Na and chlorine or Cl b At least one pair of electrons shared correctly between nitrogen and hydrogen (1) remainder of structure correct (1)
OCR Gateway GCSE Chemistry Past Papers - Revision Science
Chemistry B – Chemistry Modules C4, C5, C6 Higher (B742/02) – Download Paper – Download Marking Scheme June 2014 OCR Gateway GCSE Chemistry Past Papers (J264) Chemistry B – Chemistry Modules C1, C2, C3 Foundation (B741/01) – Download Paper – Download Marking Scheme
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Download OCR past papers, mark schemes or examiner reports for GCSEs, A Levels and vocational subjects.

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