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HOMELearning from other fields > Flame test

Flame test


 Refined salts such as alkaline metals, alkaline-earth metals, and copper vaporize when lit,and the electrons in their atoms Change into a high energy state, but will soon refurn to a low-energy state because this state is unstable. At that time, humans can see the energy emitted as light. This phenomenon is called the flame test.

SubstanceColorRemarks
Lithium(Li)red 【Video:a flame test of Lithium】
Sodium(Na)yellow
Potassium(K)magenta 【Video:a flame test of Potassium】
Rubidium(Rb)dark red
Cesium(Cs)bluish violet
Calcium(Ca)red orange 【Video:a flame test of Calcium】
Strontium(Sr)deep red 【Video:a flame test of Strontium】
Barium(Ba)yellowish green
Radium(Ra)carmine
Copper(Cu)greenish blue 【Video:a flame test of Copper】
Boron(B)yellowish green
Gallium(Ga)blue
Indium(In)deep blue
Thalliumpale green
Phosphorus(P)pale blue
Arsenic(As)pale blue
Antimony(Sb)pale blue