HOME >> BIOLOGY >> NEWS
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
Neil.Calder@SLAC.Stanford.edu
650-926-8707
DOE/Stanford Linear Accelerator Center
2-Apr-2004


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:
*Name:
*Comment:
*Email:


(Date:4/19/2017)... The global military biometrics market ... by the presence of several large global players. The ... major players - 3M Cogent, NEC Corporation, M2SYS Technology, ... 61% of the global military biometric market in 2016. ... military biometrics market boast global presence, which has catapulted ...
(Date:4/17/2017)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the "Company"), ... Report on Form 10-K on Thursday April 13, 2017 with the ... The ... section of the Company,s website at http://www.nxt-id.com  under "SEC Filings," ... 2016 Year Highlights: Acquisition of ...
(Date:4/13/2017)... According to a new market research report "Consumer IAM Market ... Authorization), Service, Authentication Type, Deployment Mode, Vertical, and Region - Global Forecast ... from USD 14.30 Billion in 2017 to USD 31.75 Billion by 2022, ... ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... , ... Personal eye wash is a basic first aid supply for any work environment, but ... do you rinse first if a dangerous substance enters both eyes? It’s one less decision, ... its unique dual eye piece. , “Whether its dirt and debris, or an acid or ...
(Date:10/11/2017)... HILLS, Calif. , Oct. 11, 2017  SkylineDx today ... (ICR) and University of Leeds ... risk-stratify patients with multiple myeloma (MM), in a multi-centric Phase ... University of Leeds is the sponsor ... and ICR will perform the testing services to include high-risk ...
(Date:10/10/2017)... DIEGO, CALIF. (PRWEB) , ... October 10, 2017 , ... ... as part of its corporate rebranding initiative announced today. The bold new look ... its reach, as the company moves into a significant growth period. , It will ...
(Date:10/10/2017)... , Oct. 10, 2017 International research firm Parks ... Strategy, will speak at the TMA 2017 Annual Meeting , October ... trends in the residential home security market and how smart safety and ... Parks ... "The residential ...
Breaking Biology Technology:
Cached News: