A flame test is an analytical procedure that can determine the presence of certain elements.
A flame test is carried out by placing a sample on a clean wire (commonly made out of platinum or nichrome), and placing it in a hot non-luminous flame (one that does not exhibit black-body radiation).
Flame Coloration Chart (From CRC Handbook of Chemistry and Physics)Edit
Potassium (masked easily)
Arsenic, selenium, cesium, lead
Ytterbium metal powder
Boron, tellurium, thallium
Phosphates with sulfuric acid
Sodium (masks everything, invisible through blue glass)
Calcium (greenish through blue glass, green through green glass, masked by barium)
Strontium (violet through blue glass, yellowish through green glass, masked by barium)
Lithium (violet through blue glass, invisible through green glass, masked by barium)