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  2. File:Chemistry Lab Practical for students of class XII.pdf

    en.wikipedia.org/wiki/File:Chemistry_Lab...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  3. Test method - Wikipedia

    en.wikipedia.org/wiki/Test_method

    scope over which class(es) of items, policies, etc. may be evaluated; date of last effective revision and revision designation; reference to most recent test method validation; person, office, or agency responsible for questions on the test method, updates, and deviations; significance or importance of the test method and its intended use

  4. Hell–Volhard–Zelinsky halogenation - Wikipedia

    en.wikipedia.org/wiki/Hell–Volhard–Zelinsky...

    An example of the Hell–Volhard–Zelinsky reaction can be seen in the preparation of alanine from propionic acid.In the first step, a combination of bromine and phosphorus tribromide is used in the Hell–Volhard–Zelinsky reaction to prepare 2-bromopropionic acid, [3] which in the second step is converted to a racemic mixture of the amino acid product by ammonolysis.

  5. Chemical Agents Warning Latency Initial Symptoms Properties ...

    images.huffingtonpost.com/2008-06-02-guide1.pdf

    Chemical Agents Warning Properties Latency Period Initial Symptoms Blister Agents Lewisite Gas: colorless Odor: geraniums Seconds to minutes

  6. Paper chromatography - Wikipedia

    en.wikipedia.org/wiki/Paper_chromatography

    For example, if a compound travels 9.9 cm and the solvent front travels 12.7 cm, the R ƒ value = (9.9/12.7) = 0.779 or 0.78. R ƒ value depends on temperature and the solvent used in experiment, so several solvents offer several R ƒ values for the same mixture of compound. A solvent in chromatography is the liquid the paper is placed in, and ...

  7. List of reagents - Wikipedia

    en.wikipedia.org/wiki/List_of_reagents

    is an alkaline solution of potassium permanganate; used in organic chemistry as a qualitative test for the presence of unsaturation, such as double bonds; N-Bromosuccinimide: used in radical substitution and electrophilic addition reactions in organic chemistry. Also acts as a mild oxidizer to oxidize benzylic or allylic alcohols.

  8. Chemical chameleon - Wikipedia

    en.wikipedia.org/wiki/Chemical_chameleon

    Chemical chameleon reaction. The chemical chameleon is a redox reaction, well known from classroom demonstrations, that exploits the dramatic color changes associated with the various oxidation states of manganese.

  9. Laboratory specimen - Wikipedia

    en.wikipedia.org/wiki/Laboratory_specimen

    A laboratory specimen is sometimes a biological specimen of a medical patient's tissue, fluids, or other samples used for laboratory analysis to assist in differential diagnosis or staging of a disease process. These specimens are often the most reliable method of diagnosis, depending on the ailment.