Daily Archives: November 27, 2017



Table salt is hygroscopic and may be deliquescent at high temperature and humidity. (Artem Beliaikin)
Deliquescence Definition Deliquescence refers to the property of a substance to absorb water from the air to dissolve itself and form an aqueous solution. Materials with this property are termed deliquescent. Deliquescent materials are a class of hygroscopic substances. Other types of hygroscopic materials may absorb water, yet not dissolve. In order to be deliquescent, […]

Deliquescence Definition and Examples – Absorbing Water and Dissolving


The alchemist Jabir ibn Hayyan, from a 15th century European portrait of Geber, Codici Ashburnhamiani 1166. Codici Ashburnhamiani 1166, Biblioteca Medicea Laurenziana
If you’re ever asked to identify the Father of Chemistry for a homework assignment, the “most correct” answer for a test will be the one found in your textbook. However, that may not be the answer others would give when asked the question. The first chemist actually was a Mesopotamian woman, Tapputi, who described the […]

Who Is the Father of Chemistry?



Data from Comet 67P/Churyumov-Gerasimenko or the Rosetta Comet tells us how a comet smells. ESA/Rosetta/MPS for OSIRIS Team
The Rosetta probe made incredible discoveries about comets by taking measurements of  67P/Churyumov-Gerasimenko. Its ROSINA instrument (Rosetta Orbiter Sensor for Ion and Neutral Analysis) included two mass spectrometers that determined how a comet smells. If you think it smells like a dirty snowball, guess again (unless you find that snowball at […]

What Does a Comet Smell Like?