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Chemical substance - Wikipedia A chemical compound is a chemical substance that is composed of a particular set of atoms or ions Two or more elements combined into one substance through a chemical reaction form a chemical compound
PubChem Search and explore chemical information in the world's largest free chemistry database Search chemicals by name, molecular formula, structure, and other identifiers
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 A chemical reaction refers to a change in a chemical More generally, a chemical reaction can be understood as the process by which one or more substances change to produce one or more different substances
CHEMICAL definition and meaning | Collins English Dictionary Chemical means involving or resulting from a reaction between two or more substances, or relating to the substances that something consists of chemical reactions that cause ozone destruction the chemical composition of the ocean chemical weapons
Chemical Definition - Chemistry Glossary - ThoughtCo A chemical includes any pure substance; any mixture Because this definition of a chemical is so broad, most people consider a pure substance (element or compound) to be a chemical, particularly if it is prepared in a laboratory