Electrons are excited to higher energy levels and their emissions are observed.
It depends on the conentration, did a test today with several nitrates (incl. lead nitrate) and they were all yellow/orange...
The Ignition test is a test for aromaticity. One takes a sample of their unknown, places it in an open flame and observes what happens. The presence of an aromatic ring will usually lead to the production of a sooty yellow flame in the test.
If only oxygen is in the test tube, it may burst into flame.
A glowing splint will burst into flame/smoke in pure oxygen (using a test tube).
The flame test in analytical chemistry is only qualitative.
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