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Mr Chen's anecdotes.

Catholic High School 2024 Pure Chemistry Weighted Assessment 2

This is the short summary of the Prelim Paper Review I've done for




My 3 matrices:


Relevance: 6/10

Insightfulness: 7/10

Difficulty: 6.5/10

Overall: 6/10

Expectation: 75%


Key questions to consider:


Section A:


Question 6 - Mole Concept


Question 9 - Acid, Base and Salt


Question 10 - Acid, Base and Salt


Section B:


Question 2 - Data based, Acid-Base and Salt, Chemical Calculations


Short writeup:


This fan-submitted review covers the Weighted Assessment 2 from Catholic High School's O-level program. As expected for a topical test, the questions primarily focus on two chapters: Chemical Calculations and Acid-Base and Salt.


Unlike prelim papers, which typically test key elements and incorporate questions from various topics, this assessment sticks strictly to the chapters mentioned due to its nature as a Weighted Assessment.


The questions are moderately challenging, effectively preparing Secondary 3 students for their O-level exams. The difficulty level and skills required align with O-level standards, albeit in a less intense format.


Overall, this is an excellent paper for Secondary 3 students to prepare for their Weighted Assessment and a great resource for Secondary 4 students to revise the Mole Concept and Acid-Base and Salt on a topical level.

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