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  2. Solution (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Solution_(chemistry)

    Solution (chemistry) Making a saline water solution by dissolving table salt (NaCl) in water. The salt is the solute and the water the solvent. In chemistry, a solution is a special type of homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent.

  3. Chemical compound - Wikipedia

    en.wikipedia.org/wiki/Chemical_compound

    A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound. A compound can be transformed into a different substance by a chemical ...

  4. Solvent - Wikipedia

    en.wikipedia.org/wiki/Solvent

    A solvent (from the Latin solvō, "loosen, untie, solve") is a substance that dissolves a solute, resulting in a solution. A solvent is usually a liquid but can also be a solid, a gas, or a supercritical fluid. Water is a solvent for polar molecules, and the most common solvent used by living things; all the ions and proteins in a cell are ...

  5. Aqueous solution - Wikipedia

    en.wikipedia.org/wiki/Aqueous_solution

    Aqueous solution. An aqueous solution is a solution in which the solvent is water. It is mostly shown in chemical equations by appending (aq) to the relevant chemical formula. For example, a solution of table salt, also known as sodium chloride (NaCl), in water would be represented as Na+(aq) + Cl−(aq). The word aqueous (which comes from aqua ...

  6. Mixture - Wikipedia

    en.wikipedia.org/wiki/Mixture

    Mixture. A mixture is a material made up of two or more different chemical substances which can be separated by physical method. [1] A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids. [2][3]

  7. Reagent Chemicals - Wikipedia

    en.wikipedia.org/wiki/Reagent_Chemicals

    Reagent Chemicals. Reagent Chemicals[a] is a publication of the American Chemical Society (ACS) Committee on Analytical Reagents, [1] detailing standards of purity for over four hundred of the most widely used chemicals in laboratory analyses and chemical research. Chemicals that meet this standard may be sold as "ACS Reagent Grade" materials.

  8. Law of definite proportions - Wikipedia

    en.wikipedia.org/wiki/Law_of_definite_proportions

    In chemistry, the law of definite proportions, sometimes called Proust's law or the law of constant composition, states that a given chemical compound always contains its component elements in fixed ratio (by mass) and does not depend on its source and method of preparation. For example, oxygen makes up about 8 / 9 of the mass of any sample of ...

  9. List of reagents - Wikipedia

    en.wikipedia.org/wiki/List_of_reagents

    an organic acid; is one of the simplest carboxylic acids. Acetone. an organic compound; simplest example of the ketones. Acetylene. a hydrocarbon and the simplest alkyne; widely used as a fuel and chemical building block. Ammonia. inorganic; the precursor to most nitrogen-containing compounds; used to make fertilizer. Ammonium hydroxide.