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Encyclopedia > Flame test
The flame test carried out on a copper halide. Note the characteristic bluish-green color of the flame due to the copper.
The flame test carried out on a copper halide. Note the characteristic bluish-green color of the flame due to the copper.

The flame test is a procedure used in chemistry to detect the presence of certain metal ions, based on each element's characteristic emission spectrum. The color of flames in general also depends on temperature; see flame color. Image File history File links Download high resolution version (1253x1169, 465 KB) This is a high school chemistry teacher demonstrating a flame test. ... Image File history File links Download high resolution version (1253x1169, 465 KB) This is a high school chemistry teacher demonstrating a flame test. ... Copper has played a significant part in the history of mankind, which has used the easily accessible uncompounded metal for nearly 10,000 years. ... A halide is a binary compound, of which one part is a halogen atom and the other part is an element or radical that is less electronegative than the halogen, to make a fluoride, chloride, bromide, iodide, or astatide compound. ... For other uses, see Chemistry (disambiguation). ... This article is about metallic materials. ... The periodic table of the chemical elements A chemical element, or element, is a type of atom that is defined by its atomic number; that is, by the number of protons in its nucleus. ... An elements emission spectrum is the relative intensity of electromagnetic radiation of each frequency it emits when it is heated (or more generally when it is excited). ... Flame generated by the burning of a candle. ... Flame generated by the burning of a candle. ...


The test involves introducing a sample of the element or compound to a hot, non-luminous Bunsen flame, and observing the colour that results. Samples are usually held on a platinum wire cleaned repeatedly with hydrochloric acid to remove traces of previous analytes.[1] In high-school chemistry courses, wooden splints are sometimes used, mostly because solutions can be dried onto them, and they are inexpensive. Nichrome wire is also sometimes used.[1] When using a splint, one must be careful to wave the splint through the flame rather than holding it in the flame for extended periods, to avoid setting the splint itself on fire. Look up Bunsen burner in Wiktionary, the free dictionary. ... Nichrome is a brand name for a nickel-chromium resistance wire, a non-magnetic alloy of nickel and chromium. ...


Sodium is a common component or contaminant in many compounds and its spectrum tends to dominate over others. The test flame is often viewed through cobalt blue glass to filter out the yellow of sodium and allow for easier viewing of other metal ions. For sodium in the diet, see Edible salt. ... The Lachine Canal, in Montreal, is badly polluted Pollution is the release of harmful environmental contaminants, or the substances so released. ... Cobalt Glass Bromo-Seltzer bottle Cobalt glass is a deep blue colored glass prepared by adding cobalt compounds to the molten glass. ... For sodium in the diet, see Edible salt. ...


The flame test is fast and easy to perform, and does not require any equipment not usually found in a chemistry laboratory. However, the range of detected elements is small, and the test relies on the subjective experience of the experimenter rather than any objective measurements. The test has difficulty detecting small concentrations of some elements, while too strong a result may be produced for certain others, which tends to drown out weaker signals. This article is in need of attention. ...


Although the test only gives qualitative information, not quantitative data about the actual proportion of elements in the sample; quantitative data can be obtained by the related techniques of flame photometry or flame emission spectroscopy. Qualitative is an important qualifier in the following subject titles: Qualitative identity Qualitative marketing research Qualitative method Qualitative research THE BIG J This is a disambiguation page — a list of pages that otherwise might share the same title. ... A scale for measuring mass A quantitative property is one that exists in a range of magnitudes, and can therefore be measured. ... A photoelectric flame photometer is a device used in inorganic chemical analysis to determine the concentration of certain metal ions. ... a Headline text hi today for the first time i fucked my 14 years neighbour she was very excited when she saw my dick thouh it was a bit thick and long but she gladly become agree to let me fuck her at my first stroke i broke her seal...

Contents

Common metals

Some common metals and corresponding colors are:

Symbol Name Color
As Arsenic ◼ Blue
B Boron ◼ Bright Green
Ba Barium ◼ Light Green
Ca Calcium ◼ Brick red
Cs Cesium ◼ Pale Violet
Cu(I) Copper(I) Blue
Cu(II) Copper(II) (non-halide) Green
Cu(II) Copper(II) (halide) Blue-green
Fe Iron Gold
In Indium Blue
K Potassium Lilac
Li Lithium Crimson
Mg Magnesium Brilliant white
Mn(II) Manganese(II) Yellowish green
Mo Molybdenum Yellowish green
Na Sodium Intense yellow
P Phosphorus Pale bluish green
Pb Lead White/blue
Rb Rubidium Pale violet
Sb Antimony Pale green
Se Selenium Azure blue
Sr Strontium Crimson
Te Tellurium Pale green
Tl Thallium Pure green
Zn Zinc Bluish green

Gas flame General Name, Symbol, Number arsenic, As, 33 Chemical series metalloids Group, Period, Block 15, 4, p Appearance metallic gray Standard atomic weight 74. ... For other uses, see Blue (disambiguation). ... General Name, Symbol, Number boron, B, 5 Chemical series metalloids Group, Period, Block 13, 2, p Appearance black/brown Standard atomic weight 10. ... For other uses, see Green (disambiguation). ... For other uses, see Barium (disambiguation). ... For other uses, see Green (disambiguation). ... For other uses, see Calcium (disambiguation). ... For other uses, see Red (disambiguation). ... General Name, Symbol, Number Caesium, Cs, 55 Series Alkali metals Group, Period, Block 1(IA), 6, s Density, Hardness 1879 kg/m3, 0. ... Violet (named after the flower violet) is used in two senses: first, referring to the color of light at the short-wavelength end of the visible spectrum, approximately 380–420 nanometres (this is a spectral color). ... Copper has played a significant part in the history of mankind, which has used the easily accessible uncompounded metal for nearly 10,000 years. ... For other uses, see Blue (disambiguation). ... Copper has played a significant part in the history of mankind, which has used the easily accessible uncompounded metal for nearly 10,000 years. ... A halide is a binary compound, of which one part is a halogen atom and the other part is an element or radical that is less electronegative than the halogen, to make a fluoride, chloride, bromide, iodide, or astatide compound. ... For other uses, see Green (disambiguation). ... Copper has played a significant part in the history of mankind, which has used the easily accessible uncompounded metal for nearly 10,000 years. ... A halide is a binary compound, of which one part is a halogen atom and the other part is an element or radical that is less electronegative than the halogen, to make a fluoride, chloride, bromide, iodide, or astatide compound. ... Blue-green is a name for a color with a mixture of blue and green. ... For other uses, see Iron (disambiguation). ... Gold is a shade of the color yellow closest to that of gold metal. ... General Name, Symbol, Number indium, In, 49 Chemical series poor metals Group, Period, Block 13, 5, p Appearance silvery lustrous gray Standard atomic weight 114. ... For other uses, see Blue (disambiguation). ... General Name, symbol, number potassium, K, 19 Chemical series alkali metals Group, period, block 1, 4, s Appearance silvery white Standard atomic weight 39. ... Lilac is a color that is a pale shade of violet. ... This article is about the chemical element named Lithium. ... For other uses, see Crimson (disambiguation). ... General Name, symbol, number magnesium, Mg, 12 Chemical series alkaline earth metals Group, period, block 2, 3, s Appearance silvery white solid at room temp Standard atomic weight 24. ... This article is about the color. ... General Name, symbol, number manganese, Mn, 25 Chemical series transition metals Group, period, block 7, 4, d Appearance silvery metallic Standard atomic weight 54. ... Green-Yellow (or yellow-green) is a mix of the colors green and yellow. ... General Name, Symbol, Number molybdenum, Mo, 42 Chemical series transition metals Group, Period, Block 6, 5, d Appearance gray metallic Standard atomic weight 95. ... Green-Yellow (or yellow-green) is a mix of the colors green and yellow. ... For sodium in the diet, see Edible salt. ... A yellow Tulip. ... General Name, symbol, number phosphorus, P, 15 Chemical series nonmetals Group, period, block 15, 3, p Appearance waxy white/ red/ black/ colorless Standard atomic weight 30. ... For other uses, see Turquoise (disambiguation). ... This article is about the metal. ... This article is about the color. ... For other uses, see Blue (disambiguation). ... General Name, Symbol, Number rubidium, Rb, 37 Chemical series alkali metals Group, Period, Block 1, 5, s Appearance grey white Atomic mass 85. ... Violet (named after the flower violet) is used in two senses: first, referring to the color of light at the short-wavelength end of the visible spectrum, approximately 380–420 nanometres (this is a spectral color). ... This article is about the element. ... For other uses, see Green (disambiguation). ... For other uses, see Selenium (disambiguation). ... A database query syntax error has occurred. ... General Name, Symbol, Number strontium, Sr, 38 Chemical series alkaline earth metals Group, Period, Block 2, 5, s Appearance silvery white metallic Standard atomic weight 87. ... For other uses, see Crimson (disambiguation). ... General Name, Symbol, Number tellurium, Te, 52 Chemical series metalloids Group, Period, Block 16, 5, p Appearance silvery lustrous gray Standard atomic weight 127. ... For other uses, see Green (disambiguation). ... General Name, Symbol, Number thallium, Tl, 81 Chemical series poor metals Group, Period, Block 13, 6, p Appearance silvery white Standard atomic weight 204. ... For other uses, see Green (disambiguation). ... General Name, symbol, number zinc, Zn, 30 Chemical series transition metals Group, period, block 12, 4, d Appearance bluish pale gray Standard atomic weight 65. ... For other uses, see Turquoise (disambiguation). ... Image File history File links Download high resolution version (1500x2500, 208 KB) Gas flame used for flame test. ...

Gas flame seen through cobalt glass Image File history File links Download high resolution version (1500x2500, 156 KB) File links The following pages link to this file: Flame test ...

Flame test on copper sulfate Image File history File links Download high resolution version (1500x2500, 242 KB) File links The following pages link to this file: Flame test ...

Flame test on copper sulfate seen through cobalt glass Image File history File links Download high resolution version (1500x2500, 187 KB) Gas flame used for flame test of coppersulphate. ...

Flame test on sodium carbonate Image File history File links Download high resolution version (1500x2500, 249 KB) Gas flame used for flame test of sodiumcarbonate. ...

Flame test on sodium carbonate seen through cobalt glass Image File history File links Download high resolution version (1500x2500, 187 KB) File links The following pages link to this file: Flame test ...

See also

Colored fire is a common pyrotechnic effect used in stage productions, fireworks and by fire performers the world over. ... An elements emission spectrum is the relative intensity of electromagnetic radiation of each frequency it emits when it is heated (or more generally when it is excited). ...

References

  1. ^ a b Jim Clark (2005). Flame Tests. Chemguide.

External links

Wikimedia Commons has media related to:
Flame test

  Results from FactBites:
 
Student Worksheet: The Flame Test (578 words)
When the platinum wire is clean, dip the wire in the test tube containing a 0.5M solution and hold it in the hottest part of the flame.
Test all of the solutions and make sure that you record the color of the flame for each element on the Data Table.
When the diffraction grating was used to view the flame, explain why different colorful emission lines were observed for the elements.
Flame Test (1033 words)
• To predict the identity of an unknown metal ion from a flame test.
Therefore, a flame test is often used as a confirmatory test in identifying an unknown metal.
Test it in the flame as you did with the known solutions.
  More results at FactBites »


 

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