…of or relating to chemistry or the interactions of substances as studied in chemistry…
…of or relating to chemistry or the interactions of substances as studied in chemistry…
…an expert in chemistry; a person engaged in chemical research or experiments…
…the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances…
…a narcotic drug or drugs used to subdue a disruptive person, typically a patient in an institution…
…(of farming or cultivation) not involving the use of artificial chemicals, especially pesticides or fertilizers…
…the change in Gibbs free energy with respect to change in amount of the component, with pressure, temperature, and amounts of other components being constant. Components are in equilibrium if their chemical potentials are equal…
…a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction…
…addiction to a mood- or mind-altering drug, such as alcohol or cocaine…
…the branch of engineering concerned with the design and operation of industrial chemical plants…
…the erosion or disintegration of rocks, building materials, etc., caused by chemical reactions (chiefly with water and substances dissolved in it) rather than by mechanical processes…
…a chemical used in agriculture, such as a pesticide or a fertilizer…
…a strong force of attraction holding atoms together in a molecule or crystal, resulting from the sharing or transfer of electrons…
…relating to or denoting substances obtained by the refining and processing of petroleum or natural gas…
…a substance formed from two or more elements chemically united in fixed proportions…
…each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter. Each element is distinguished by its atomic number, i.e., the number of protons in the nuclei of its atoms…
…a set of chemical symbols showing the elements present in a compound and their relative proportions, and in some cases the structure of the compound…
