Protonating

Part of speech: verb

Definitions

1. The process of adding a proton to a molecule or ion, typically increasing its positive charge and altering its chemical properties; the act of transferring a hydrogen ion in acid-base reactions; the step in chemical mechanisms where a species gains a hydrogen cation
2. A chemical reaction step in which a proton is attached to a substrate, resulting in proton gain and often changing the molecule's reactivity; the delivery of a hydrogen ion from an acid to a base; the modification of electronic structure through hydrogen ion addition
3. The act of embedding a positively charged hydrogen nucleus into another chemical entity, affecting molecular charge states and behavior; the transfer of H+ in proton exchange processes; a fundamental reaction in acid-base chemistry involving acidification of a compound through hydrogen ion addition

Etymology: "Protonating" is the present participle of "protonate", a chemistry verb formed in English by adding the suffix "-ate" to "proton". The proton itself takes its name from the Greek "prôton", meaning "first", a word that gave the particle its name because the hydrogen nucleus was recognised as the basic building block of heavier nuclei. The Greek "prôton" is built from "pró", meaning "before" or "first", together with a superlative ending, so the name encodes the idea of being foremost. The suffix "-ate" comes from Latin "-ātus", which chemists adopted to name salts and compounds formed from an acid. Attaching it to "proton" produced a verb meaning to add a proton to a molecule, which is the sense that describes a base accepting a hydrogen ion during an acid-base reaction.

Synonyms: ionizing, activating, charging

Antonyms: deprotonating, neutralizing