Skip to content

Course home

Chemical tests
x

What a chemical test tells you

What a chemical test tells you

Summary chart of gas tests for hydrogen, oxygen, carbon dioxide, ammonia and chlorine with reagents and observations

A chemical test is a qualitative test: it identifies what substance is present from a clear observation such as a flame colour, a precipitate, or a splint result. In exam answers, give both the reagent or apparatus and the positive observation.

Chemical tests Lesson

  1. IGCSE
  2. /Chemistry
  3. /Chemical tests

Step-by-step lessons covering Edexcel IGCSE Chemistry Chemical tests for IGCSE Chemistry. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Build a solid grasp of atomic structure, bonding and the mole concept early, since these underpin almost every other topic, then move on to the more calculation-heavy quantitative and organic chemistry content.