Rf Formula: "Distance Substance over Distance Solvent"
Think "DS / DS" — Distant Substance over Distance Solvent. Always put the substance on top.
Instrumental Advantages: "ASS" (not sophisticated, but it sticks)
Accurate, Sensitive, Speed — the three advantages of instrumental methods over traditional analysis.
Flame Colours: "Little Sodium Kings Carry Colour"
Lithium = Crimson | Sodium = Yellow | King = potassium = lilaC | Calcium = Orange-red | Cuprum = Green
Or just use the initials: Li = Crimson, Na = Yellow, K = Lilac, Ca = Orange-red, Cu = Green
This memory aid covers Memory Aids within Instrumental Analysis for GCSE Chemistry. Revise Instrumental Analysis in Chemical Analysis for GCSE Chemistry with 6 exam-style questions and 6 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 9 of 12 in this topic. Use it for quick recall, then test yourself straight afterwards so the memory aid becomes usable in an answer.
Practice questions for Instrumental Analysis
Which formula correctly calculates the Rf value in chromatography?
State two advantages of using instrumental methods of analysis compared with traditional chemical tests.