This memory aid covers Memory Aids within Gas Volume for GCSE Chemistry. Topic 19: Gas Volume It is section 8 of 11 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 8 of 11
Practice
20 questions
Recall
20 flashcards
🧠 Memory Aids
"24 is the magic number at RTP" — one mole of any gas = 24 dm³. Think of it as "two dozen" — 24 dm³, just like 24 hours in a day or 24 items in two dozen.
The gas triangle: Draw a triangle with Volume (V) at the top, Moles (n) bottom-left, and 24 bottom-right. Cover V → n × 24. Cover n → V ÷ 24. This is the gas equivalent of the moles triangle.
Unit check mantra: "cm³? Divide by 1000 to get dm³ FIRST." Always convert before using V = n × 24.
Multi-step route: "mass → moles → ratio → moles of gas → volume" — always follow this sequence for complex questions.