chemisches

Chemisches is the attributive, inflected form of the German adjective chemisch, meaning related to chemistry or composed of chemicals. It is used to describe nouns connected with the science of chemistry, chemical substances, processes, or phenomena. German adjectives change their endings according to gender, number, case, and the presence or absence of articles, so chemisch appears as chemisch, chemische, chemischer, chemisches, etc., in different contexts.

In practice, chemisches appears most often before neuter singular nouns in the nominative or accusative case when there is no definite article, as in chemisches Element or chemisches Reagenz. With an indefinite article, as in ein chemisches Element, the form remains chemisches. After a definite article or other determiner that signals weak inflection, the neuter singular ending becomes chemische, as in das chemische Element. Plural forms use chemische for all genders when describing multiple items, such as chemische Elemente, chemische Verbindungen, or chemische Reaktionen.

Etymology and usage: chemische derives from Chemie, the German word for chemistry, itself borrowed from the historical term chymie (ultimately from Greek khymia). In scientific writing, chemisches and its related forms function as precise descriptors, distinguishing chemical properties or components from non-chemical contexts. The term is widely used across disciplines such as inorganic chemistry, organic chemistry, materials science, and chemical engineering, reflecting the central role of chemistry in describing matter, reactions, and materials.