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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 If two or more chemical substances can be combined without reacting, they may form a chemical mixture [3]
What Is a Chemical? Definition and Examples In everyday usage, a “chemical” often refers to an undesirable additive or contaminant For example, pesticides in water or artificial colorings in food are “chemicals ” But, chemistry sees chemicals somewhat differently A chemical is a substance with a specific composition
PubChem Search and explore chemical information in the world's largest free chemistry database Search chemicals by name, molecular formula, structure, and other identifiers Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations and more
What Is A Chemical ? | NRC. gov 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)
10 Types Of Chemicals and How to Manage Them Whether you’re a safety officer, lab technician, factory worker, or employer, understanding chemical hazards isn’t just a compliance requirement—it’s a vital step in creating a safe and sustainable workplace This comprehensive guide explores the 10 most common types of chemical hazards, such as toxic, corrosive, flammable, and carcinogenic
Chemistry | Definition, Topics, Types, History, Facts . . . chemistry, the science that deals with 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
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
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
CHEMICAL | English meaning - Cambridge Dictionary adjective us ˈkem·ɪ·kəl of, involved with, relating to, or made by using chemicals or chemistry: the chemical industry a chemical plant producing plastics and rubber