St Andrew's JC 2025 JC1 H2 Chemistry WA2

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

SAJC 2025 JC1 H2 Chemistry WA2

Download paper here

Prelim Paper Review on TikTok here

Sign up for our trial classes here

Join our Telegram Channel!

My 3 matrices:

Relevance: 7.5/10

Insightfulness: 10/10

Difficulty: 8/10

Overall: 8.5/10

Expectation: 80%

Key questions to consider:

Question 1 - Chemical Bonding

Question 3 - Energetics

Short writeup:

2025 SAJC H2 Chemistry JC1 WA2 Review — The Most Insightful Paper This Year?

The 2025 SAJC H2 Chemistry JC1 WA2 is the kind of paper that reveals who’s truly ready for A Level Chemistry. At first glance, it can feel overwhelming—even the sub-parts of questions demand deep understanding, contextual application, and crystal-clear thinking. But beneath that layer of intimidation lies a treasure trove of insights that make this paper worth every minute of effort.

Let’s start with the standout feature: the Energetics question. This isn’t your typical “plug in the formula and go” type of question. It weaves together calorimetric calculations, Hess Law cycles, and conceptual links that most students would overlook unless explicitly trained to see them.

Where many students are used to simply applying the standard equation involving lattice energy and hydration enthalpy, this question takes a different route. It challenges students to first extract values from an experimental setup, then understand how these values integrate into a theoretical energy cycle—a truly rare and valuable test of mastery.

And that’s just one example. The paper as a whole is packed with questions that bridge textbook Chemistry with real-world applications. It rewards students who don’t just memorise content, but actually understand the subject.

Unfortunately, this is only intended as a JC1 WA2. That means students taking this are only halfway into their first year of JC. For most, the sheer level of application required could quickly lead to a confidence spiral. The structure of the exam doesn’t leave much room for “warm-up questions” either, so students may feel thrown into the deep end from the start—causing them to burn time or second-guess themselves.

Is this a bad paper? Absolutely not.

In fact, this would have been the perfect paper for a full-scale exam like a JC1 Promotional or JC2 Mid-Year, where students are expected to showcase depth and flexibility of understanding over 80 marks or more. In such a format, this paper could shine—paired with technical recall questions to balance its difficulty.

But as it stands, the WA2 format makes it feel a little too intense, especially for weaker students or those still building confidence.

Despite the steep difficulty curve, the 2025 SAJC H2 Chemistry JC1 WA2 remains one of the most valuable exam papers to attempt. It’s the kind of paper that, if completed under timed conditions with a decent score, guarantees that you’re at least an average student ready for A Level Chemistry.

If you're aiming for top grades, this paper isn’t optional—it’s essential.

📍 If this paper left you unsure of where you stand, let’s fix that.

At my newly launched tuition centre at 1102A Serangoon Road, Level 2, we help JC1 Chemistry students sharpen their exam skills and build confidence through weekly classes and open class revision sessions. I don’t just help students study—I teach them how to think like a top student. Every question, every paper, and every class is designed to bridge the gap between memorisation and mastery.