2025-chemistry-f3-pp3-ms-end-t3-s1-teacher_co_ke
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DATE 07 Dec 2025
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SIZE 1.43 MB
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notes
About This Document
Document Type: This is a Exam Paper, designed for Testing knowledge and exam technique.
Context: Standard material from the 2025 academic period.
Key Content: Likely covers essential definitions, structured questions to test your proficiency.
Study Strategy: Attempt these questions under timed conditions to simulate a real exam environment, then check against your notes.
Recommendation: comprehensive resource for students aiming to achieve top grades in their final assessments.
Detailed Content Overview
Introduction
This notes resource titled "2025-chemistry-f3-pp3-ms-end-t3-s1-teacher_co_ke" provides comprehensive exam preparation materials designed to test and enhance your understanding. This resource is structured to facilitate effective learning and retention of important information.
Key Topics Covered
Learning Objectives
- Master key concepts required for examination success
- Practice answering exam-style questions effectively
- Develop time management skills for timed assessments
- Identify and address knowledge gaps in understanding
Detailed Summary
END OF YEAR 2025 EXAM (OCTOBER) CHEMISTRY PAPER 3 (PRACTICAL) MARKING SCHEME 1. P – 1 mk Accuracy (1 mk) Download this and other FREE materials from https://teacher. ke/notes (a) Average volume of solution X = 25. 0cm3 (1 mk) (b) Moles of solution X required NaOH(aq) + HCl(aq) NaCl(aq) + H2O(l) 1:1 (1/2 mk) 0. 005 moles (1 mk) (c) Molarity of solution X No. 2m (1 mk) 25 Procedure II CT – 1 mk D. P – 1 mk Accuracy – 1 mk (d) Average volume of solution X = 25. 0 cm3 (1 mk) (e) Number of moles of Na2CO3 in 25cm3 Na2CO3(aq) + 2HCl(aq) 2NaCl(aq) + CO2(g) + H2O(l) 1:2 0. 005 moles (1/2 mk) Mole ratio – Na2CO3:HCl 1:2 (1/2 mk) Moles of Na2CO3 = ½ x 0. 0025 moles (1/2 mk) (f) Concentration of sodium carbonate in moles per litre. (a) Observations - Solid turns to yellow and then to white on cooling. (1 mk) - A gas that turns moist blue litmus paper to red. (b) (i) Observations A white precipitate soluble in excess.
Study Tips & Recommendations
Time Management
Practice under timed conditions to improve speed and accuracy. Allocate specific time limits to each section.
Active Practice
Attempt all questions before checking answers. Review mistakes to understand where improvements are needed.
Mark Scheme Review
Study marking schemes carefully to understand how examiners award points and structure your answers accordingly.
Regular Review
Schedule periodic reviews to reinforce learning and combat forgetting. Use spaced repetition for optimal retention.
Content Preview
END OF YEAR 2025 EXAM (OCTOBER) CHEMISTRY PAPER 3 (PRACTICAL) MARKING SCHEME 1. CT – 1mk D.P – 1 mk Accuracy (1 mk) Download this and other FREE materials from https://teacher.co.ke/notes (a) Average volume of solution X = 25.0cm3 (1 mk) (b) Moles of solution X required NaOH(aq) + HCl(aq) NaCl(aq) + H2O(l) 1:1 (1/2 mk) 0.2×25 Moles of NaOH = 1000 = 0.005 𝑚𝑜𝑙𝑒𝑠 (1/2 mk) 0.005×1 Moles of solution X = 1 = 0.005 moles (1 mk) (c) Molarity of solution X No. of moles = 0.005 moles 0.005 moles 25cm3 ? 1...
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