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  2. Glossary of chemistry terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_chemistry_terms

    Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...

  3. 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 ...

  4. Chemical test - Wikipedia

    en.wikipedia.org/wiki/Chemical_test

    The Schiff test detects aldehydes; Tollens' reagent tests for aldehydes (known as the silver mirror test) The Zeisel determination tests for the presence of esters or ethers; Lucas' reagent is used to distinguish between primary, secondary and tertiary alcohols. The bromine test is used to test for the presence of unsaturation and phenols.

  5. Testability - Wikipedia

    en.wikipedia.org/wiki/Testability

    Testability is a primary aspect of science [1] and the scientific method.There are two components to testability: Falsifiability or defeasibility, which means that counterexamples to the hypothesis are logically possible.

  6. Solubility - Wikipedia

    en.wikipedia.org/wiki/Solubility

    Example of a dissolved solid (left) Formation of crystals in a 4.2 M ammonium sulfate solution. The solution was initially prepared at 20 °C and then stored for 2 days at 4 °C. In chemistry, solubility is the ability of a substance, the solute, to form a solution with another substance, the solvent.

  7. Migratory aptitude - Wikipedia

    en.wikipedia.org/wiki/Migratory_aptitude

    Migratory aptitude is the relative ability of a migrating group to migrate in a rearrangement reaction. [1] Migratory aptitudes vary in different reactions, depending on multiple factors. [2] In the Baeyer-Villiger reaction, the more substituted group, in general, migrates. [3]

  8. Chemical substance - Wikipedia

    en.wikipedia.org/wiki/Chemical_substance

    While the term chemical substance is a precise technical term that is synonymous with chemical for chemists, the word chemical is used in general usage to refer to both (pure) chemical substances and mixtures (often called compounds), [14] and especially when produced or purified in a laboratory or an industrial process.

  9. Ductility - Wikipedia

    en.wikipedia.org/wiki/Ductility

    Tensile test of an Al-Mg-Si alloy. The local necking and the cup and cone fracture surfaces are typical for ductile metals. This tensile test of a nodular cast iron demonstrates low ductility. Ductility refers to the ability of a material to sustain significant plastic deformation before fracture. Plastic deformation is the permanent distortion ...

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