Manufacturers Hanover Corporation
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: a substance (as an element or chemical compound) obtained by a chemical process or used for producing a chemical effect
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).
adjective. of, used in, produced by, or concerned with chemistry or chemicals: a chemical formula; chemical agents. used in chemical warfare: chemical weapons.
Relating to or produced by means of chemistry: a chemical discovery; a chemical change. Noun A substance obtained by or used in a chemical process; a chemical compound.
A chemical is any substance consisting of matter. This includes any liquid, solid, or gas. A chemical is any pure substance (an element) or any mixture (a solution, compound, or gas). They can either occur naturally or can be created artificially.
A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds.
chemical compound, any substance composed of identical molecules consisting of atoms of two or more chemical elements. water molecule. All the matter in the universe is composed of the atoms of more than 100 different chemical elements, which are found both in pure form and combined in chemical compounds. A sample of any given pure element is composed only of the atoms characteristic of that element, and the atoms of each element are unique.