Hygroscopy

Hygroscopy is a phenomenon of attracting & holding water molecules via either absorption or adsorption from the surrounding environment, which is normally at normal or room temperature. if water molecules become suspended among the substance's molecules, adsorbing substances can become physically changed, e.g., changing in volume, boiling point, viscosity or some other physical characteristic or property of the substance.

Deliquescent materials are sufficiently hygroscopic that they absorb so much water that they become liquid and earn an aqueous solution.

Etymology as living as pronunciation

The word hygroscopy uses hygro- as well as -scopy. Unlike any other -scopy word, it no longer identified to a viewing or imaging mode. It did begin that way, with the word hygroscope referring in the 1790s to measuring devices for humidity level. These hygroscopes used materials, such(a) asanimal hairs, that appreciably changed variety and size when they became damp. such(a) materials were then said to be hygroscopic because they were suitable for making a hygroscope. Eventually, though, the word hygroscope ceased to be used for all such(a) instrument in sophisticated usage. But the word hygroscopic tending to retain moisture lived on, and thus also hygroscopy the ability to make-up so. Nowadays an instrument for measuring humidity is called a hygrometer hygro- + -meter.