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Chemical definition: a substance produced by or used in a chemical process.. See examples of CHEMICAL used in a sentence.
traducir CHEMICAL: sustancia química, químico, producto químico [masculine], químico/ca [masculine-feminine…. Más información en el diccionario inglés-español.
CHEMICAL definition: 1. any basic substance that is used in or produced by a reaction involving changes to atoms or…. Learn more.
Search for REACH registrations. The first version of our new Chemicals database, ECHA CHEM makes available information from all REACH registrations received by the European Chemicals Agency (ECHA). See for more information on the transition to ECHA CHEM. More.
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Chemistry is the scientific study of the properties and behavior of matter. It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.
15 de oct. de 2023 · 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. It is an element, an alloy, or a compound made up of two or ...
