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  2. Splint (laboratory equipment) - Wikipedia

    en.wikipedia.org/wiki/Splint_(laboratory_equipment)

    If the gas is flammable, the mixture ignites. [1] This test is most commonly used to identify hydrogen, which results with a distinctive 'squeaky pop' sound. [2] Hydrogen is easily ignited and used to definitively conclude what the gas actually is. [3] Further analytical chemistry techniques can clarify the identity of the gas in question.

  3. Flame test - Wikipedia

    en.wikipedia.org/wiki/Flame_test

    The procedure uses different solvents and flames to view the test flame through a cobalt blue glass or didymium glass to filter the interfering light of contaminants such as sodium. [12] Flame tests are subject of a number of limitations. The range of elements positively detectable under standard conditions is small.

  4. List of gases - Wikipedia

    en.wikipedia.org/wiki/List_of_gases

    This list is sorted by boiling point of gases in ascending order, but can be sorted on different values. "sub" and "triple" refer to the sublimation point and the triple point, which are given in the case of a substance that sublimes at 1 atm; "dec" refers to decomposition. "~" means approximately.

  5. Combustibility and flammability - Wikipedia

    en.wikipedia.org/wiki/Combustibility_and...

    A fire test can be conducted to determine the degree of flammability. Test standards used to make this determination but are not limited to the following: Underwriters Laboratories UL 94 Flammability Testing; International Electrotechnical Commission IEC 60707, 60695-11-10 and 60695-11-20; International Organization for Standardization ISO 9772 ...

  6. Flame ionization detector - Wikipedia

    en.wikipedia.org/wiki/Flame_ionization_detector

    The design of the flame ionization detector varies from manufacturer to manufacturer, but the principles are the same. Most commonly, the FID is attached to a gas chromatography system. The eluent exits the gas chromatography column (A) and enters the FID detector’s oven (B). The oven is needed to make sure that as soon as the eluent exits ...

  7. Chemical test - Wikipedia

    en.wikipedia.org/wiki/Chemical_test

    In chemistry, a chemical test is a qualitative or quantitative procedure designed to identify, quantify, or characterise a chemical compound or chemical group. Purposes

  8. Avogadro's law - Wikipedia

    en.wikipedia.org/wiki/Avogadro's_Law

    Avogadro's law (sometimes referred to as Avogadro's hypothesis or Avogadro's principle) or Avogadro-Ampère's hypothesis is an experimental gas law relating the volume of a gas to the amount of substance of gas present. [1] The law is a specific case of the ideal gas law. A modern statement is:

  9. Purging (gas) - Wikipedia

    en.wikipedia.org/wiki/Purging_(gas)

    The purge gas is inert, i.e. by definition [1] non-combustible, or more precisely, non-reactive. The most common purge gases commercially available in large quantities are nitrogen and carbon dioxide. Other inert gases, e.g. argon or helium may be used. Nitrogen and carbon dioxide are unsuitable purge gases in some applications, as these gases ...

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