This essay focuses on a chemical substance. Your essay should include no less than 7 reliable, scientific, peer-review sources (do not use our text). Your essay should be upload through the Assignment folder directly in Canvas
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In an introductory general chemistry textbook. According to this definition a chemical substance can either be a pure chemical element or a pure chemical compound. But, there are exceptions to this definition; a pure substance can also be define. As a form of matter that has both definite composition and distinct properties. The chemical substance index publish by CAS also includes several alloys of uncertain composition.
Non-stoichiometric compounds are a special case (in inorganic chemistry) that violates the law of constant composition. And for them, it is sometimes difficult to draw the line between a mixture and a compound. As in the case of palladium hydride.
The term ‘chemical substance’ means any organic or inorganic substance of a particular molecular identity. Including – (i) any combination of such substances occurring in whole or in part. As a result of a chemical reaction or occurring in nature”.
In geology, substances of uniform composition are called minerals. While physical mixtures (aggregates) of several minerals (different substances) are define as rocks. Many minerals, however, mutually dissolve into solid solutions. Such that a single rock is a uniform substance despite being a mixture in stoichiometric terms. Feldspars are a common example: anorthoclase is an alkali aluminum silicate. Where the alkali metal is interchangeably either sodium or