Daily Archives: November 27, 2017


Energy Definition and Examples (Science)

ENERGY DEFINITION Energy is defined in science as the ability to do work. It is a scalar physical quantity. Although energy is conserved, there are many different types of energy, such as kinetic energy, potential energy, light, sound, and nuclear energy. One form of energy may be converted into another without violating a […]

Light is one form of energy. (Riccardo Annandale)

Table salt is hygroscopic and may be deliquescent at high temperature and humidity. (Artem Beliaikin)

Deliquescence Definition and Examples – Absorbing Water and Dissolving

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 hygroscopic materials may absorb water, yet not dissolve. In order to be deliquescent, a […]


Who Is the Father of Chemistry?

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 […]

The alchemist Jabir ibn Hayyan, from a 15th century European portrait of Geber, Codici Ashburnhamiani 1166. Codici Ashburnhamiani 1166, Biblioteca Medicea Laurenziana

Data from Comet 67P/Churyumov-Gerasimenko or the Rosetta Comet tells us how a comet smells. ESA/Rosetta/MPS for OSIRIS Team

What Does a Comet Smell Like?

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 […]