2025-kisii-sch-chem-paper-2-marking-scheem
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DATE 07 Dec 2025
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About This Document
Document Type: This is a Study Notes, designed for Reviewing core curriculum material.
Context: Standard material from the 2025 academic period.
Key Content: Likely covers essential definitions, structured questions to test your proficiency.
Study Strategy: Summarize these notes into flashcards or mind maps to aid active recall and long-term retention.
Recommendation: comprehensive resource for students aiming to deepen their understanding of General Studies.
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This notes resource titled "2025-kisii-sch-chem-paper-2-marking-scheem" contains valuable educational content for academic study and reference. This resource is structured to facilitate effective learning and retention of important information.
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Detailed Summary
FORM 4 CHEMISTRY PAPER TWO MARKING SCHEME 1 (ai) H H CH3 H H C = C C C H H 1mrk H (ii) H H H H H H H C C C C C C H H H H H H O C 1mrk OH Accept open structural formula. CH3 may or may not be open. OH may or may not be open. (b) i) Ethane/ C2 H6 H H H C C H H (ii) C3 H6 Cl2 H H H H C C C H CL Cl H 1mrk H (iii) 1) Water/ steam/ conc. H2 SO4 1mrk 2) Acidified KMnO4 /KMnO4/Acidified K2 Cr2 O7 (ii) 2CH3 CH2 CH2 OH + 2Na 2CH3 CH2 CH2 ONa + H2 Any 1mrk 1 mrk Ignore missing or wrong state symbols. Penalize fully if not balanced. ii) G has a larger atomic radius than N. N has more protons than G/ N has a greater nuclear attraction than G.
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FORM 4 CHEMISTRY PAPER TWO MARKING SCHEME 1 (ai) H H CH3 H H C = C C C H H 1mrk H (ii) H H H H H H H C C C C C C H H H H H H O C 1mrk OH Accept open structural formula. CH3 may or may not be open. OH may or may not be open. (b) i) Ethane/ C2 H6 H H H C C H H (ii) C3 H6 Cl2 H H H H C C C H CL Cl H 1mrk H (iii) 1) Water/ steam/ conc. H2 SO4 1mrk 2) Acidified KMnO4 /KMnO4/Acidified K2 Cr2 O7 (ii) 2CH3 CH2 CH2 OH + 2Na 2CH3 CH2 CH2 ONa + H2 Any 1mrk 1 mrk Ignore missing or wrong state symbols. Penal...
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