Past Papers

Achieve A* in Chemistry AS Cambridge

Experience interactive learning with a dedicated chemistry teacher and hands-on experiments for real-world applications.

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12,000 successful students.
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Your AS Chemistry Edexcel Success Journey

A clear, motivating path that guides you from enrollment all the way to feeling confident, prepared, and fully exam-ready.

First Step
Start by registering with your basic details. Once registered, you’ll receive all the information about class timings, materials, and how the course works. Your chemistry journey officially begins here.
Second Step
Understand the Syllabus Clearly.
In the first lessons, we go through:
-How the IGCSE Chemistry syllabus is structured
-What topics you’ll study
-How questions are asked in exams
-What examiners expect from students
Third Step
Learn, Practice, Improve
Each lesson includes:
-Clear explanation of the topic
-Step-by-step solved examples
-Practice questions
-Homework and feedback
Fourth Step
Revise and Prepare for the Exam

Before exams, we focus on:
-Full syllabus revision
-Solving past papers
-Time management practice
-Common mistake correction
Achieve the A+
With solid understanding, smart strategy, and consistent practice, you’re not just passing—you're aiming for excellence and unlocking your highest potential.
Enroll now

What they say about me

Lissan provides great design and has a great sense of user experience and aesthetics. He delivers on time and is an overall great communicator. I highly recommend working with him.
Mara Nikolic

Founder,  Mara99

He will exceed your expectations. Super easy to work with Lissan, incredibly intelligent, and perceptive. He took the fumbled thoughts from my head and turned it all into a beautiful creation. I am very impressed, Lissan is extremely talented and attentive. He delivered exactly what I was looking for based on my very picky taste. I plan on doing business again in the future.
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Danaisa Urgelles

Medical Doctor, BHField

Lissan is clearly a very talented designer. The project went smoothly, and we're happy with the outcome!
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Kam Malik

Managing Director, LeadSense

Lissan is an amazing designer, delivered on time and communicated well. I asked for a few revisions after the initial concept and he got updates back to me just 24-hours later. Fully intend to hire again in the future.
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Kate Bagoy

Principal Product Designer

Amazing designer with an eye for aesthetics. I had pretty vigorous requests and he hit every single one. He was patient and highly skilled!
John D Saunders

Co-founder,  5fourdigital

Working with Lissan is always smooth and full of empathy. The project is very high quality, and has been done in a tight schedule. I recommend working with Lissan if you want to get a fast and pro service.
Vincent Arrouet

Co-founder,  Sunology

Excellent Webflow Development Service I recently had the pleasure of working with lissan on a Webflow development project, and I must say that I am thoroughly impressed with the level of service that I received. Really great! Thanks
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Leon Dapoz

Co-Founder,  Evvvolution

Great designer as I love his work. Produced a great design with little time, tho would love to see what he can do with a proper heads up on a project.
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Harbik Davidyan

Founder,  Webk Agency

Your friendly neighborhood Chemistry expert

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Dr. Mohamed Za3balawy

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Meet Dr. Za3balawy

Mohamed Za3balawy is a chemistry teacher known for his rare ability to transform scientific concepts into ideas that feel simple, logical, and enjoyable. His classes are built on a balance of strong academic fundamentals and creative teaching techniques, allowing students to understand reactions, equations, and theories with genuine clarity.

Za3balawy brings energy and personality to every lesson, using real-life examples, problem-solving strategies, and a structured approach that helps even the most difficult topics feel approachable. Whether he is explaining organic chemistry mechanisms, demonstrating experiments, or breaking down complex calculations, he always maintains a teaching style that is patient, disciplined, and focused on student success.

His students often describe him as knowledgeable, supportive, and motivating — a teacher who not only teaches chemistry, but inspires a deeper interest in science itself. With each class, he aims to strengthen critical thinking, build confidence, and prepare students with the skills they need for exams and for life.