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]
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? Definition and Examples - Science Notes and Projects 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
What is a Chemical - NRC 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)
Chemical compound | Definition, Examples, Types | Britannica chemical compound, any substance composed of identical molecules consisting of atoms of two or more chemical elements water molecule A water molecule is made up of two hydrogen atoms and one oxygen atom A single oxygen atom contains six electrons in its outer shell, which can hold a total of eight electrons
10 Types Of Chemicals and How to Manage Them - Occupational Health and . . . 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
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