Useful english dictionary. 2012.
theory of indicators — noun (chemistry) the theory that all indicators are either weak acids or weak bases in which the color of the ionized form is different from the color before dissociation • Syn: ↑Ostwald s theory of indicators • Topics: ↑chemistry, ↑chemical… … Useful english dictionary
Ostwald, Wilhelm — ▪ German chemist Introduction in full Friedrich Wilhelm Ostwald born Sept. 2, 1853, Riga, Latvia, Russian Empire died April 4, 1932, near Leipzig, Ger. Russian German chemist and philosopher who was instrumental in establishing physical… … Universalium
scientific theory — noun a theory that explains scientific observations scientific theories must be falsifiable • Hypernyms: ↑theory • Hyponyms: ↑big bang theory, ↑big bang theory, ↑nebular hypothesis, ↑planetesimal hypothesis … Useful english dictionary
chemical science — noun the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions • Syn: ↑chemistry • Derivationally related forms: ↑chemic (for: ↑chemistry), ↑chemist (for: ↑ … Useful english dictionary
chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… … Universalium
positivism — positivist, adj., n. positivistic, adj. positivistically, adv. /poz i teuh viz euhm/, n. 1. the state or quality of being positive; definiteness; assurance. 2. a philosophical system founded by Auguste Comte, concerned with positive facts and… … Universalium
acid–base reaction — ▪ chemistry Introduction a type of chemical process typified by the exchange of one or more hydrogen ions, H+, between species that may be neutral (molecules, such as water, H2O; or acetic acid, CH3CO2H) or electrically charged (ions, such… … Universalium
Glass electrode — A glass electrode is a type of ion selective electrode made of a doped glass membrane that is sensitive to a specific ion. It is an important part of the instrumentation for chemical analysis and physico chemical studies. In modern practice,… … Wikipedia
Сиджвик, Невил Винсент — В Википедии есть статьи о других людях с такой фамилией, см. Сиджвик. Невил Винсент Сиджвик Nevil Vincent Sidgwick Род деятельности: Химик Дата рождения: 8 мая … Википедия
