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Chemical substance - Wikipedia A chemical substance is a unique form of matter with constant chemical composition and characteristic properties [1][2] Chemical substances may take the form of a single element or chemical compounds
What Is a Chemical? Definition and Examples Learn what a chemical is Get the chemical definition and examples and explore the importance of these substances in everyday life
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CHEMICAL Definition Meaning - Merriam-Webster The meaning of CHEMICAL is of, relating to, used in, or produced by chemistry or the phenomena of chemistry How to use chemical in a sentence
What Is A Chemical ? | NRC. gov What is a Chemical ? Printable Version The Nuclear Regulatory Commission's Science 101: What is a Chemical? A chemical is any substance that has a defined composition In other words, a chemical is always made up of the same "stuff " Some chemicals occur in nature, such as water Other chemicals are manufactured, such as chlorine (used for bleaching fabrics or in swimming pools) Chemicals are
Chemistry | Definition, Topics, Types, History, Facts . . . Chemistry is the science of the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes Chemistry is concerned with the properties of atoms and the laws governing their combinations
Chemical Portal - Chemistry Online Education Chemical portal: a place for chemistry enthusiasts and professionals alike Chemistry tools, periodic table, unit converters and more