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  2. Characteristic property - Wikipedia

    en.wikipedia.org/wiki/Characteristic_property

    A characteristic property is a chemical or physical property that helps identify and classify substances. The characteristic properties of a substance are always the same whether the sample being observed is large or small. Thus, conversely, if the property of a substance changes as the sample size changes, that property is not a characteristic ...

  3. Chemical composition - Wikipedia

    en.wikipedia.org/wiki/Chemical_composition

    The chemical composition of a mixture can be defined as the distribution of the individual substances that constitute the mixture, called "components". In other words, it is equivalent to quantifying the concentration of each component. Because there are different ways to define the concentration of a component, there are also different ways to ...

  4. Chemical compound - Wikipedia

    en.wikipedia.org/wiki/Chemical_compound

    [16] [17] [18] A molecule may be homonuclear, that is, it consists of atoms of one chemical element, as with two atoms in the oxygen molecule (O 2); or it may be heteronuclear, a chemical compound composed of more than one element, as with water (two hydrogen atoms and one oxygen atom; H 2 O). A molecule is the smallest unit of a substance that ...

  5. Chemical substance - Wikipedia

    en.wikipedia.org/wiki/Chemical_substance

    [1] [2] Chemical substances may take the form of a single element or chemical compounds. If two or more chemical substances can be combined without reacting, they may form a chemical mixture. [3] If a mixture is separated to isolate one chemical substance to a desired degree, the resulting substance is said to be chemically pure. [4]

  6. Chemistry - Wikipedia

    en.wikipedia.org/wiki/Chemistry

    Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.

  7. Material - Wikipedia

    en.wikipedia.org/wiki/Material

    A material is a substance or mixture of substances that constitutes an object.Materials can be pure or impure, living or non-living matter. Materials can be classified on the basis of their physical and chemical properties, or on their geological origin or biological function.

  8. Meet the 'Survivor 48' Cast! Substance Abuse Counselor Mary ...

    www.aol.com/meet-survivor-48-cast-substance...

    Give me one winner and one non-winner who you identify with the most. I really identify with Ben. I really identify with him, because he was just always o. He had this fierce desire to win at all ...

  9. Principle (chemistry) - Wikipedia

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

    Principle, in chemistry, refers to a historical concept of the constituents of a substance, specifically those that produce a certain quality or effect in the substance, such as a bitter principle, which is any one of the numerous compounds having a bitter taste. The idea of chemical principles developed out of the classical elements.