Corrosive substance due to their capabilities of dissolving greases, proteins or mineral deposits such as limescale inside water pipes. In chemical uses, high chemical reactivity is often desirable, as the rates of chemical reactions depend on the activity (effective concentration) of the reactive species. For instance, catalytic sulfuric acid is used in the alkylation process in an oil refinery: the activity of carbocations, the reactive intermediate, is higher with stronger acidity, and thus the reaction proceeds faster. Once used, corrosives are most often recycled or neutralized. However, there have been environmental problems with untreated corrosive effluents or accidental discharges. Corrosive substance A
Prefixes in Hebrew Hebrew serve multiple purposes. A prefix can serve as a conjunction, preposition, definite article, or interrogative. Prefixes are also used when conjugating verbs in the future tense and for various other purposes. These prefixes (Hebrew: תְּחִלִּית "t'chilit") often come from loanwords from English (Latin, Greek, etc...) which are especially prevalent with technical and academic terms. Other prefixes are native to Hebrew (ex. rav). When the Hebrew prefix does not line up in similarity to the English, Greek, or Latin one that is because it is of Hebrew origin. Prefixes in Hebrew There are several prefixes in the Hebrew language which