The flame test as a chemical test is rarely used as a diagnostic anymore. It has been replaced with ICP (Inductively Coupled Plasma) analysis that is basically a computerized flame test on steroids. ICP analysis allows researchers to quickly determine the elemental composition of almost any sample. One fun application of the flame test is fireworks. Fireworks are given their colors by the same chemicals that color flames in the flame test.
Flame retardant spray does work on most materials. When it comes to fabrics however, it is not effective on many synthetic materials such as nylon and acrylic. To be sure of the effectiveness on a particular material, a test should be performed before trying practical application.
If you're testing for skills a practical test is always better than a written test.
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The flame test in analytical chemistry is only qualitative.
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Cobalt gives a blue flame test while chromium gives a green flame test.
Cesium burns with a lilac or bluish-violet flame in a flame test.
The flame test for nickel produces a blue-green color flame.
Chlorine gas itself does not emit a colored flame when subjected to a flame test. Instead, it will impart a green color to the flame when a sample containing chlorine (such as a chloride compound) is included in the flame test.
It is not the anions (e.g. iodide) that are responsible for the flame test color, rather the cations such as sodium ion, potassium ion and calcium ion give you different colors.
The colour turns brick Red .
you need to do the flame test you need to do the flame test