Favorite liquid revisited

The physicists of antiquity called it one of nature's fundamental elements; third-graders know its chemical formula; and all known forms of life need it to exist. Yet what water really is at least in its liquid form is still, to a large extent, a mystery. A team led by scientists at Stanford Synchrotron Radiation Laboratory (SSRL) and Stockholm University now has achieved a breakthrough in understanding the structure of liquid water. They found that water molecules clump much more loosely than previously thought.

The findings appeared April 1 in Science magazine's advance publication web site. "The results overturn 20 years of research in the physical chemistry of water," says SLAC's Anders Nilsson, the team's leader. "It's going to be a big shock in the whole field," he says.

The SSRL is a division of the Stanford Linear Accelerator Center, a U.S. Department of Energy facility operated by Stanford University. The project was a collaboration between researchers at SSRL, Stockholm University, Linkping University (Sweden) and the University of Utrecht (Holland).

As its H2O formula suggests, each water molecule is made of two atoms of hydrogen and one of oxygen. In ice, water molecules are arranged in a crystal structure, with each molecule typically linked to four others through what chemists call hydrogen bonds. In a hydrogen bond, electrostatic forces stick together a hydrogen atom from one molecule with the oxygen atom from a different molecule. The oxygen can form two hydrogen bonds, so a molecule can link to up to four others with two links through its oxygen and one through each of its hydrogens.

Although they are ten times weaker than the "covalent" bonds within the molecule itself, hydrogen bonds between molecules still take a lot of energy to break up which is why ice melts so slowly. Even in liquid water, molecules spend most of their time clumped together by hydrogen bonds, though not in a static pattern as in ice. "Hyd

Contact: Neil Calder
DOE/Stanford Linear Accelerator Center

Page: 1 2 3

Related biology news :

1. Sea Turtles Have Favorite Oceanic Routes
2. Diabetes therapies and liquid memory may develop from micro fluid research, Science researchers say
3. Hope for nano-scale delivery of medicine using a light beam to move liquid through tiny tubes
4. Penn engineers develop fuel cell that uses liquid diesel, the first such device to run on a widely available fuel
5. Shifting liquid crystals may serve as personal, portable chemical sensors, Science researchers report
6. Zooming liquid particles show technological promise
7. Researchers develop liquid form of DNA
8. Acid rain revisited: ESA releases report on the ecological response to acid deposition
9. The Sagan criteria for life revisited

Post Your Comments:

(Date:4/11/2017)... 2017 Research and Markets has announced the ... to their offering. ... eye tracking market to grow at a CAGR of 30.37% during ... Market 2017-2021, has been prepared based on an in-depth market analysis ... and its growth prospects over the coming years. The report also ...
(Date:4/11/2017)... NXT-ID, Inc. (NASDAQ:   NXTD ) ... appointment of independent Directors Mr. Robin D. Richards ... Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief Executive ... their guidance and benefiting from their considerable expertise as we ...
(Date:4/5/2017)... SEATTLE , April 5, 2017  The Allen ... the Allen Cell Explorer: a one-of-a-kind portal and dynamic ... large-scale 3D imaging data, the first application of deep ... edited human stem cell lines and a growing suite ... the platform for these and future publicly available resources ...
Breaking Biology News(10 mins):
(Date:10/9/2017)... ... 09, 2017 , ... At its national board meeting in North Carolina, ... University’s Departments of Physics and Astronomy, has been selected for membership in ARCS ... for the 2015 Breakthrough Prize in Fundamental physics for the discovery of the accelerating ...
(Date:10/9/2017)... ... October 09, 2017 , ... ... October 5, 2017, in the medical journal, Epilepsia, Brain Sentinel’s SPEAC® System ... standard, video EEG, in detecting generalized tonic-clonic seizures (GTCS) using surface electromyography ...
(Date:10/7/2017)... ... October 06, 2017 , ... Phase ... metagenome deconvolution product, featuring the first commercially available Hi-C kit. Researchers can ... Hi-C metagenome deconvolution using their own facilities, supplementing the company’s full-service ProxiMeta ...
(Date:10/6/2017)... ... October 06, 2017 , ... The ... and technology sector at their fourth annual Conference where founders, investors, innovative practitioners ... and the ELEVATE pitch competition showcasing early stage digital health and med tech ...
Breaking Biology Technology:
Cached News: