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Chemistry - Wikipedia
Chemical reactions usually involve the making or breaking of chemical bonds. Oxidation, reduction, dissociation, acid–base neutralization and molecular rearrangement are some examples of common chemical reactions.
What Is a Chemical? Definition and Examples
A chemical is any substance with a definite composition and distinct properties. All matter is made of chemicals, regardless of whether it is natural or synthetic.
PubChem
Search and explore chemical information in the world's largest free chemistry database. Search chemicals by name, molecular formula, structure, and other identifiers.
Chemistry | Definition, Topics, Types, History, & Facts | Britannica
Cooking, fermentation, glass making, and metallurgy are all chemical processes that date from the beginnings of civilization. Today, vinyl, Teflon, liquid crystals, semiconductors, and superconductors represent the fruits of chemical technology.
CHEMICAL Definition & Meaning | Dictionary.com
CHEMICAL definition: a substance produced by or used in a chemical process. See examples of chemical used in a sentence.
What is a Chemical ? | Nuclear Regulatory Commission - NRC
Chemical changes are different from physical changes, which don't result in a change in substances. One example of a physical change is when water freezes into ice.
CHEMICAL | English meaning - Cambridge Dictionary
CHEMICAL definition: 1. any basic substance that is used in or produced by a reaction involving changes to atoms or…. Learn more.
Chemical - definition of chemical by The Free Dictionary
Relating to or produced by means of chemistry: a chemical discovery; a chemical change.
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.
What Is and Is Not a Chemical? - ThoughtCo
A chemical is any substance that is made of matter, like solids, liquids, or gases. Light, heat, and sound are not chemicals since they are not made of matter. Chemicals can be both natural, like oxygen, or artificial, like stainless steel.
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