Pertaining to chemistry; characterized or produced by the forces and operations of chemistry; employed in the processes of chemistry; as, chemical changes; chemical combinations.
A substance used for producing a chemical effect; a reagent.
Pesticides used to control weeds, diseases or pests
In science, chemicals are elementary substances such as oxygen, hydrogen, nitrogen, etc. In the context of home composting, however, the word "chemical" is often used to describe a philosophy considered to be in opposition to the organic philosophy. In general, the chemical philosophy encourages people to force nature to do what they want by applying synthetic pesticides and fertilizers which may get the temporary results they want, but may harm or not enhance the general soil condition and environment.
Strictly speaking a chemical is anything that has a mass and occupies a volume. Typically, when we speak of a chemical, we mean any substance which is used for a particular purpose.
A substance that creates
a substance that is made by or has something to do with chemistry The chemical that plants use to make food is called chlorophyll.
Any substance having a defined molecular composition.
relating to or used in chemistry; "chemical engineer"; "chemical balance"
of or made from or using substances produced by or used in reactions involving atomic or molecular changes; "chemical fertilizer"
a substance and whether it is harmless or not, depends on the context in which the substance appears or is used
a top manufacturer of surfactants tha
a substance; any form of matter
a substance, like chlorine, used to kill bacteria in the water.
A substance with a distinct molecular formation, produced by a chemical process.
Chemical industries are those involved in the importation, manufacture or sale of substances that are produced by or used in a reaction involving changes in atoms or molecules
A substance produced by or used in chemistry. Not all chemicals are harmful, (e.g., water).
Most substances in the universe.
Chemical engineering applies principles of chemistry and physics to the design and production of materials that undergo chemical changes during their manufacture. Chemical engineers also participate in efforts to maintain a clean environment and to create substitutes for or find ways to preserve our natural resources.
A substance formed by altering the molecular structure of a natural material or by the combination of two or more elements to form a new substance.
A substance formed by altering the molecular structure of an element or by combining two or more elements to form a new substance.
made by or used in chemistry
Substance used in or obtained by a chemical process.