There are a few different applications of a flame test. These applications include testing for specific chemicals, checking some items specifically for poisonous chemicals, and testing fireworks.
Flame tests can be used just about anywhere with a flame... they are most frequently used to identify unknowns I think. Certain elements and compounds burn different colors and can be more easily identified this way, however, some burn the same colors.
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.
Scientists use the flame test in their workplace. Flame test is a confirmatory test for certain specific elements, most of which are metals.
To test for poison on certain objects or on fireworks
I think your question would be much more valuable if you asked why. As for whom, scientist, engineers, etc... The flame test is used to detect the element based off of the color of the flame.
Fire works are a good real world example.
in salt analysis...
Fireworks, Flares
Metla ions or minerals
Flame tests are used to help identify substances used in murders
Flame tests are used in a wide range of environments. I.e, In construction and construction materials to assess at what stage a material used will actually catch fire. In many cases the test is used for fire prevention. In furniture, most countries now have a formal fire resistant level required to build and retail furniture.
Flame retardant
Lead burns with a bluish-white flame when ignited. Flame tests use analysis of flame color to detect the presence of particular elements within a compound.
Flame tests allow you to get some idea of what substances make up a given sample. It is particularly useful for the identification of polymers, because many of them give off unique burn patterns.
Flame tests are used to help identify substances used in murders
Fireworks
Precipitation tests Flame tests Tests on gases Other ions
Lead compounds tend to be blue in flame tests
Flame tests are used in a wide range of environments. I.e, In construction and construction materials to assess at what stage a material used will actually catch fire. In many cases the test is used for fire prevention. In furniture, most countries now have a formal fire resistant level required to build and retail furniture.
1. not all elements give colour to the flame 2. flame test is not always accurate
The result can be erroneous.
The flame tests are different because they contain different metal cations. Since the metals were the variable that you changed, you know that can be the only reason why the flames would be different colors.
there are many tests but flame test, colour and spectroscopy..are the prilimnary tests for identifying metals.
flame test
The results may be erroneous.
Anions do not play a role in the color of a flame in a flame test because they are not visible as the energy gap do not correspond to that of a visible photon. Flame tests are only applicable to cations.