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Category Archives: Chemistry
The concept of “valence” – the ability of a particular atom to combine with other atoms by exchanging electrons – is one of the cornerstones of modern chemistry and solid-state physics. Valence controls crucial properties of molecules and materials, including … Continue reading
Researchers have achieved a major turning point in the quest for efficient desalination by announcing the invention of a graphene-oxide membrane that sieves salt right out of seawater. At this stage, the technique is still limited to the lab, but … Continue reading
Researchers from China create graphene aerogel that converts sunlight into heat to produce water vapor at room temperature
Researchers at the Chinese Hubei University have designed a graphene aerogel film capable of producing water vapor at room temperature using only sunlight. The aerogel floats on the surface, where it heats up only a small part of the water … Continue reading
Flipping the switch on ammonia production: Process generates electricity instead of consuming energy
Nearly a century ago, German chemist Fritz Haber won the Nobel Prize in Chemistry for a process to generate ammonia from hydrogen and nitrogen gases. The process, still in use today, ushered in a revolution in agriculture, but now consumes … Continue reading
Share to TwitterShare to FlipboardShare to Copy LinkResearchers have identified a metal that conducts electricity without conducting heat – an incredibly useful property that defies our current understanding of how conductors work. The metal contradicts something called the Wiedemann-Franz Law, … Continue reading
Researchers have brought electrides into the nanoregime by synthesizing the first 2D electride material. Electrides are ionic compounds, which are made of negative and positive ions. But in electrides, the negative “ions” are simply electrons, with no nucleus. The electrons … Continue reading
Scientists have taken spectroscopic snapshots of nature’s most mysterious relay race: the passage of extra protons from one water molecule to another during conductivity. The finding represents a major benchmark in our knowledge of how water conducts a positive electrical … Continue reading
Remembering Sir Harry Kroto, who was awarded the Nobel Prize for the discovery of C60…. a man with a passion for science and a mischievous streak!
What could be better than a material that’s super flexible, only one atom thick, and is 200 times stronger than steel? A material that’s equally strong and flexible, also only one atom thick, and inexpensive. Scientists are asserting that this new discovery could potentially upstage the world’s … Continue reading
On this day in 1941, Glenn Seaborg and his team discovered element 94, plutonium, at the University of California, Berkeley. “It was the first synthetic element to be seen by man,” Seaborg wrote in 1981, and “the first realization of … Continue reading
Today Alan Mason overhears a conversation all about half life. Curio: What exactly is a “half life?” Alfredo: It’s a general term, to describe almost anything which declines regularly over a period of time. Curio: Anything? Alfredo: Anything that shows … Continue reading
Today Alan Mason helps us understand pH. Ideas of acidity, alkalinity and neutrality have been known about for centuries, hence the common language terms, but it was only in the early twentieth century that the concept was fully understood scientifically, … Continue reading
Click to enlarge A periodic table showing which countries are associated with which elemental discoveries.