Pearson Edexcel International A Level Chemistry Student |best| Cracked Jun 2026

The Pearson Edexcel specification document is your checklist. Print it out. If a concept or bullet point is listed in the specification, it can be tested. If it is not there, do not waste time memorizing it.

| Feature | Thermal Cracking | Catalytic Cracking | | :--- | :--- | :--- | | | Very high (700 – 1200 K) | High (720 – 820 K) | | Pressure | High (up to 70 atm) | Slightly above atmospheric | | Catalyst | None | Zeolite (aluminosilicate) | | Mechanism | Free-radical (homolytic fission) | Ionic (heterolytic fission) via carbocations |

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Be proficient in calculating moles, concentrations, and percentage errors. The Pearson Edexcel specification document is your checklist

If a question leaves you blank, circle it and move on immediately. Secure the accessible marks first to build your momentum.

The Pearson Edexcel International A Level Chemistry Student Guide: How to Crack the Exam Achieving an A*cap A raised to the * power

Pearson Edexcel International A-Level Chemistry (Unit 2: 4.11 – 4.13) Candidate: [Your Name] Date: [Current Date] If it is not there, do not waste time memorizing it

(40% of AS, 20% of total IAL).

You must specify the ionization of one mole of gaseous atoms to form one mole of gaseous 1+ ions . Leaving out "gaseous" or "one mole" instantly invalidates your answer.

: Practice writing chemical equations and calculating amounts of substance. If a question leaves you blank, circle it

Use the official Edexcel specification as your ultimate checklist before walking into the exam room.

The mark schemes are robotic. You must learn to speak their language. If the mark scheme says "electrophilic addition," do not write "adding to a double bond." You have to use their exact vocabulary.

Treat Units 3 and 6 with the same theoretical weight as your core content units.