(C) In the case of a practicing license or managing license that has been expired for more than two consecutive license renewal periods, completes eight hours of continuing education for each license renewal period that has elapsed since the license was last issued or renewed, up to a maximum of twenty-four hours.C) In the case of a practicing license or managing license that has been expired for more than two consecutive license renewal periods, completes eight hours of continuing education for each license renewal period that has elapsed since the license was last issued or renewed, up to a maximum of twenty-four hours.
A chemical element bonded to an identical chemical element is not a chemical compound since only one element, not two different elements, is involved. Examples are the diatomic molecule hydrogen (H 2) and the polyatomic molecule sulfur (S 8).he physical and chemical properties of compounds differ from those of their constituent elements. This is one of the main criteria that distinguish a compound from a mixture of elements or other substancesâin general, a mixture's properties are closely related to, and depend on, the properties of its constituents.
Yes, in chemistry a pure substance means either an element or a compound. Thus, hydrogen, oxygen, sodium, iron, copper etc. are pure substances; and so are compounds such as water, sugar, ammonia, sodium chloride, methane, ethanol etc. A compound is composed of two or more elements combined in a fixed ratio by mass. Like an element, a compound also has a distinct chemical identity. A mixture is not a pure substance as it is a collection of two or more elements/compounds in varying ratio. Air, sea water, gasoline, vegetable oils, steel etc. are mixtures.