Memory Aid: CEO
Part of Rates & Collision Theory · GCSE GCSE Chemistry revision
This memory aid covers Memory Aid: CEO within Rates & Collision Theory for GCSE Chemistry. Revise Rates & Collision Theory in Rates of Reaction for GCSE Chemistry with 25 exam-style questions and 16 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 10 of 14 in this topic. Use it for quick recall, then test yourself straight afterwards so the memory aid becomes usable in an answer.
Topic position
Section 10 of 14
Practice
25 questions
Recall
16 flashcards
🧠 Memory Aid: CEO
To remember the conditions for a successful collision, think of the letters CEO:
- C — COLLIDE (particles must physically meet)
- E — ENERGY ≥ Ea (must exceed activation energy)
- O — ORIENTATION (must hit at the right angle)
A CEO runs a company — all three must be present for the company (reaction) to succeed. If any one is missing, nothing happens!
Keep building this topic
Read this section alongside the surrounding pages in Rates & Collision Theory. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Rates & Collision Theory
According to collision theory, which of the following must happen for a chemical reaction to take place?
Explain, using collision theory, why increasing the concentration of a reactant solution increases the rate of reaction.
Quick Recall Flashcards
25 questions on Rates & Collision Theory — practise free
Instant marking, adaptive difficulty, and 16 spaced repetition flashcards. Free until your GCSEs.
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