Edexcel IAL Chemistry · AS + A2 · Units 1–6 (WCH11–WCH16) · 2019–2026

Every Edexcel IAL Chemistry Past Paper, Worked Line by Line

AS and A2 fully solved and classified past papers with every calculation and multiple-choice item worked in full — plus a practice app and video explanations — across all six units.

Complete A2 Chemistry notes eBook included free with this pack

20+ Years Teaching
20,000+ Books Sold Worldwide
40+ Countries
★ 4.5 Average Rating
Watch: a 2-minute tour of the solved past papers Watch on YouTube
Every exam series — nothing missing
2019 2026

Every past paper from 2019 right up to the most recent 2026 sessions — fully solved and classified. The latest papers are the ones free sites never post, and they are the truest rehearsal for the exam your child actually sits.

★★★★★

“The solved past papers showed the full working for the multiple-choice items and listed every mark-scheme point. I used the revision questions the week before and finished with an A.”

Faris Al-Qahtani · IAL Chemistry · SA
★★★★★

“The multiple-choice answers are not just letters. Every option is worked through, and the calculation steps show where the correct answer comes from.”

Camille Laurent · IAL Chemistry · FR
★★★★★

“Clear, step-by-step solutions plus wording that matches all mark-scheme points. My long written answers improved and I scored an A.”

Hind Al-Nuaimi · IAL Chemistry · AE
★★★★★

“The teacher must have put a lot of effort into this package — he answered every question in full detail, in baby steps.”

Fatema Al-Khalifa · IAL Chemistry · BH
★★★★★

“I finally understood where I was going wrong in calculations because the working is shown line by line, including units and intermediate values.”

Syazwan bin Othman · IAL Chemistry · MY
★★★★★

“The question finder is brilliant when I only need one solution. Entering the paper details takes me straight to the exact worked answer.”

Nurul Huda · IAL Chemistry · MY
Hosni Showike teaching Biology and Chemistry
Meet Your Teacher

Solutions written around the mark scheme — not the textbook

I'm Hosni Showike, and I've spent over 20 years teaching, including 16 years at A-level, in IGCSE and A-level Biology and Chemistry. I hold master's degrees in biochemistry and biotechnology from the University of Brussels, and an international teaching certificate from the USA. I've authored eight science textbooks with more than 20,000 copies sold worldwide.

These solved past papers fix one specific problem: students who understand the topic but still drop marks — because no one showed them the exact wording examiners reward. Every answer is modelled on the mark scheme and examiner reports.

Proof, Not Promises

Real Students. Real Grades.

Verified grade distributions from recent June sessions. Pick a year — the chart draws itself.

67% A/A* · June 2025
  • Scored A or A* 67%
  • Scored B 22%
  • Scored C 7%
  • D or below 4%

June 2025 · highest A/A* rate in five years.

The Method

How Every Answer Is Built

Each solution works backwards from the mark scheme and examiner reports — so your child learns the exact wording that earns each mark, then practises it until full marks become routine.

Read the command word

Every question is decoded first — describe, explain, calculate — so you answer what the examiner is actually asking.

Write the mark-scheme points

Model answers show the precise phrasing that scores, point by point — no padding, nothing missed.

Check the examiner insight

Short notes flag the traps that cost most students marks — the ones examiner reports call out year after year.

Chem-Bio past-paper practice app showing topical and classified modes, choose topics or exam years
Practice App Included

Practise by topic or by year — on any device

Every book comes with the Chem-Bio practice app. Your child solves real exam questions, checks the full worked answer, and tracks what they've mastered.

  • Switch between Topical and Classified modes
  • Choose the topics or the exam years you want to drill
  • Enter any exam question number and jump straight to the worked answer
  • Regularly updated with the most recent exam sessions
What's Covered

Exactly What You'll Practise

Every question mapped to the Edexcel International A-Level Chemistry specification — all six units (WCH11–WCH16), across AS and A2, solved for the 2019–2026 sessions.

The AS foundation unit.

  • Atomic structure and the mole
  • Bonding, structure and the Periodic Table
  • Introductory organic chemistry

The AS applications unit.

  • Energetics and enthalpy
  • Group 1, 2 and 7 chemistry
  • Kinetics, equilibria, halogenoalkanes and alcohols

The AS practical-skills paper, solved in full.

  • Titration and technique
  • Data handling and error
  • Evaluation and conclusions

A2 physical and organic chemistry.

  • Kinetics and rate equations
  • Equilibria, Kc and Kp, and acid–base
  • Further organic chemistry and mechanisms

The most demanding synoptic content.

  • Redox and electrode potentials
  • Transition-metal chemistry
  • Arenes, amines and organic synthesis

The A2 practical-skills paper, solved in full.

  • Experimental design and variables
  • Error analysis and calculations
  • Evaluation and improvement

Sitting Units 4, 5 and 6? Try a full free A2 Chemistry class first — no card needed.

See Before You Buy

Flip Through Real Pages

Turn the pages of the actual books — every paper is either fully solved or provided as classified topical questions.

Edexcel AS Chemistry — Unit 1: Classified Past Papers
Edexcel AS Chemistry — Unit 2: Classified Past Papers
IAL Chemistry — Full Solved Exams, Unit 4
IAL Chemistry — Topical Questions, Unit 5
Get Access

Get the Solved Past Papers

Instant access after purchase — every solved paper in one place, with two full years to revise at your own pace.

Save $50
Edexcel International A Level A2 Chemistry four-book set: complete notes plus solved past papers for Units 4, 5 and 6, 2019 to 2026, tied with a gold ribbon
$150 $100

One-time payment · 2 years full access

Complete A2 Chemistry notes eBook included free with this pack

  • A2 Chemistry Units 4, 5 & 6 solved & classified (2019–2026)
  • Every calculation and MCQ worked in full
  • Mechanisms and multi-step synthesis explained
  • Practice app — solve by topic or by year
  • Video explanations for the hardest questions
  • Direct WhatsApp support · 2 years access
Get A2 Chemistry — $100 Secure payment · Instant access after purchase

Want the notes too? Get the complete Edexcel IAL Chemistry eBook →

Save More Together

Bundles & Packages

Combine subjects and units for the biggest saving — one purchase, everything your child needs.

Full Biology + Chemistry
Edexcel IAL Biology and Chemistry complete solved past papers, units 1 to 6

Full IAL Biology + Chemistry (Units 1–6)

Every unit of both subjects — the complete A-level solved-paper library.

$300 $200
Save $100
Get Everything — $200
AS Chemistry
Edexcel IAL AS Chemistry classified past papers, units 1 to 3

AS Chemistry (Units 1–3)

The complete AS set — WCH11, WCH12 and the Unit 3 practical paper.

$150 $100
Save $50
Get AS Chemistry — $100
A2 Bio + Chem
Edexcel IAL A2 Biology and Chemistry solved past papers, units 4 to 6

A2 Biology + Chemistry (Units 4–6)

Both A2 sciences together — every solved paper for units 4 to 6.

$200 $150
Save $50
Get A2 Bundle — $150
AS Bio + Chem
Edexcel IAL AS Biology and Chemistry solved past papers, units 1 to 3

AS Biology + Chemistry (Units 1–3)

Both AS sciences together — every solved paper for units 1 to 3.

$200 $150
Save $50
Get AS Bundle — $150
Individual Units

Need Just One Chemistry Unit?

Choose the exact paper you are preparing for. Each unit includes solved and classified papers from 2019 to 2026.

Best value: choose a package and save up to $100

Get complete AS, A2 or Biology + Chemistry coverage instead of purchasing units separately.

Compare Packages
Edexcel IAL Chemistry Unit 1 solved past papers book cover
Chemistry

Chemistry Unit 1

WCH11 · Solved and classified papers

$60 $40

Save $20

Buy Chemistry Unit 1
Edexcel IAL Chemistry Unit 2 solved past papers book cover
Chemistry

Chemistry Unit 2

WCH12 · Solved and classified papers

$60 $40

Save $20

Buy Chemistry Unit 2
Edexcel IAL Chemistry Unit 4 solved past papers book cover
Chemistry

Chemistry Unit 4

WCH14 · Solved and classified papers

$60 $40

Save $20

Buy Chemistry Unit 4
Edexcel IAL Chemistry Unit 5 solved past papers book cover
Chemistry

Chemistry Unit 5

WCH15 · Solved and classified papers

$60 $40

Save $20

Buy Chemistry Unit 5

Preparing for several papers? Return to the package options and save more.

Included Free

Enrol Today, Get These Included

Bonus 01

The Practice App — included free

Solve by topic or by year, enter any question number for the direct answer, and get every new session as it's added.

Bonus 02

Direct WhatsApp Access to Mr Hosni — included free

Ask about any question or answer and get a reply from the teacher directly — never a chatbot or a junior tutor.

Bonus 03

Video Explanations — included free

Watch the trickiest questions worked on screen, step by step, so the method sticks.

The 7-Day, No-Questions-Asked Guarantee

Not satisfied within 7 days of purchase? Contact us and we'll process a full refund — no questions asked. We're confident in these solutions, and we want you to feel completely safe making this decision.

FAQ

Questions? Answered.

A complete set of fully worked papers plus topical past papers arranged by unit — from Unit 1 structure, bonding and introductory organic chemistry through energetics, kinetics, equilibria, transition metals and advanced organic chemistry. Every question is solved in full and in clear language, so you follow the method rather than staring at an unexplained final answer.

They do, and that completeness is the whole idea. A-Level chemistry calculations shed marks the moment a step is glossed over, so each one is worked in full — from the equation and the moles to the final value with correct units and significant figures.

Yes — the MCQ answers are not just letters. Every option is worked through and the calculation steps show exactly where the correct answer comes from, so you learn why an option is right or wrong.

Yes. Rather than just naming a product, our solutions show the mechanism and explain why it proceeds as it does under the given conditions, so the arrow-pushing becomes something you can reason through instead of memorise.

The app lets you revise by Topical mode (choose topics) or Classified mode (choose exam years), and you can enter any question number to jump to the worked answer. You can buy any single unit, the AS set (Units 1–3), or the A2 set (Units 4–6).

The current Edexcel International A-Level Chemistry specification, Units 1 to 6 (WCH11–WCH16), with every series from 2019 to the latest 2026 sessions. New papers are added automatically and access lasts two full years.

Your A* in Edexcel IAL Chemistry Starts Here

Every past paper from 2019 to 2026, solved and classified, with the practice app and model answers built around exactly what examiners reward.

Instant access · secure checkout · 7-day guarantee
Chem-Bio by Hosni · chem-bio.info · Questions? Message us on WhatsApp