alkalis (
31Caramel color — [E150] seen on the right rim of artificial soy sauce fill line Caramel color or caramel coloring is a soluble food coloring. It is made by a carefully controlled heat treatment of carbohydrates, generally in the presence of acids, alkalis, or… …
32Dmitri Mendeleev's predicted elements — Professor Dmitri Mendeleev published the first Periodic Table of the Atomic Elements in 1869 based on properties which appeared with some regularity as he laid out the elements from lightest to heaviest.[1] When Mendeleev proposed his periodic… …
33Scandium oxide — Scandium(III) oxide Other names Scandia, scandium sesquioxide Identifiers CAS number …
34Black , Joseph — (1728–1799) British physician and chemist Black, the son of a wine merchant, was born in Bordeaux, France, and studied languages and natural philosophy, and later, medicine and chemistry at Glasgow University (1746–50). He moved to Edinburgh in… …
35MOLÉCULE — Le terme «molécule» est un concept opératoire fondamental de la pensée réductionniste. C’est un objet théorique au moyen duquel on peut dire, paraphrasant Jean Perrin, que le visible complexe de la matière se trouve représenté par de l’invisible… …
36alkali — [[t]æ̱lkəlaɪ[/t]] alkalis N MASS An alkali is a substance with a pH value of more than 7. Alkalis form chemical salts when they are combined with acids. Ant: acid …
37alkali — n. (pl. alkalis) 1 a any of a class of substances that liberate hydroxide ions in water, usu. form caustic or corrosive solutions, turn litmus blue, and have a pH of more than 7, e.g. caustic soda. b any other substance with similar but weaker… …
38turmeric paper — noun : paper impregnated with an extract of turmeric and used as a test for alkaline substances which turn it from yellow to reddish brown and for boric acid which turns it red brown * * * paper treated with turmeric: used to indicate the… …
39al|ka|li — «AL kuh ly», noun, plural lis or lies, adjective. –n. 1. any one of a group of bitter tasting substances that neutralizes acids and forms salts with them, and turns red litmus paper blue. Alkalis are soluble in water and often produce caustic… …
40met|a|pro|tein — «MEHT uh PROH teen, tee ihn», noun. any one of a group of products of the hydrolytic decomposition (resulting from the action of acids or alkalis) of proteins. Metaproteins are insoluble in water but soluble in acids or alkalis …
