Sentences with phrase «making hydrogen bonds»

I wonder if the described mechanism — CO2 making a hydrogen bond at a surface, then flipping along a fracture plane penetrating deeper into a crystalline material — also works on calcite and aragonite?

Not exact matches

Methane — a compound made up of one carbon atom bonded to four of hydrogen — is, according to the Intergovernmental Panel on Climate Change, 25 times as potent as carbon dioxide.

Cats give birth to kittens, not woodchucks, oxygen bonds with hydrogen to make water and not alcohol.

In principle, the wave function, denoted by Greek letter psi, can be used to reveal these energy levels for any given atom or molecule, although in practice this has only been done for the very simplest — the hydrogen atom and molecule (made of two hydrogen atoms bonded together).

Dr Russo said: «With this procedure, we have found that what makes water behave anomalously is the presence of a particular arrangement of the water's molecules, such as the tetrahedral arrangement, where a water molecule is hydrogen - bonded to four molecules located on the vertices of a tetrahedron.

About four billion years ago, the strength of those hydrogen - carbon bonds allowed increasingly complex molecules — amino acids, DNA, and proteins — to form from the primordial soup, making life possible.

These groups readily form hydrogen bonds that helped the fibers make tight contacts with one another, further strengthening the material.

They make good fuels because the energy stored in the bonds between carbon and hydrogen is abundant and easy to release in combustion with oxygen.

«Hydrocarbons — compounds made out of carbon and hydrogen or having a carbon - hydrogen bond — are used in daily life all the time — from clothes to toothbrushes,» said Partha Basu, chair and professor of chemistry and biological chemistry at IUPUI.

The saying «opposites attract» certainly applies to hydrogen bonds, which are made of one negatively and one positively charged atom.

Normal ice is composed of water molecules, each made of an oxygen atom bonded to two hydrogen atoms.

Two features make this polymer ultrastrong, Sachleben told Live Science: Its molecules, or «beads,» are strongly attracted to one another; and hydrogen bonds — the same bonds found in DNA, as well as water molecules — keep the «beaded strings» tightly interlocked with their neighboring beaded strings, Sachleben said.

In 2008, Ludwik Leibler, a chemist at the Industrial Physics and Chemistry Higher Educational Institution (ESPCI) in Paris, harnessed another (weaker) type of bonding — hydrogen bonding — to make a self - repairing rubber that heals itself when two broken sides are simply compressed together.

The result was a picture of the bonds linking the carbon and hydrogen atoms that make up the flat molecule pentacene.

The resulting proton chains serve as a «road» in the hydrogen bridge network that make possible long proton jumps across multiple hydrogen bridge bond formations.

When carbon dioxide gas entered the mix, the gas molecules broke hydrogen bonds in the water molecules, making the ice more brittle.

«Cheap, energy - efficient and clean reaction to make chemical feedstock: Combining experimental and computer chemistry, scientists find the conditions to break carbon - hydrogen bonds at low temperature with cheap titanium in place of rare metals.»

DNA's twisted ladder structure requires rungs of hydrogen bonds to hold it together; each bond is essentially made up of a single hydrogen atom that unites two molecules.

Inside the AlloSphere, researchers such as Van de Walle use a joystick to maneuver through three - dimensional constellations of the oxygen, hydrogen and zinc atoms (linked by a complex lattice of chemical bonds) that make up these conductors.

«It opens the doors to using hydrogen bonds to make surfaces hydrophilic, or attracted to water, and to (template) these surfaces for the selective absorption of other molecules possessing fundamental similarities to water,» Mavrikakis says.

He has made many contributions to the fields of materials science, catalysis, complex chemical reactions and hydrogen - bonded systems.

Almost as clearly as a textbook diagram, this image made by a noncontact atomic force microscope reveals the positions of individual atoms and bonds, in a molecule having 26 carbon atoms and 14 hydrogen atoms structured as three connected benzene rings.

They form transient bonds with the carbon in CO2, making it more willing to bond with hydrogen ions, eventually resulting in the production of methanol.

Water is made of hydrogen and oxygen, bonded together into a molecule.

For instance, the calcium hydride molecular ion (made of one calcium ion and one hydrogen ion bonded together) used by NIST in their experiments has 100 possible rotational states.

X-ray crystallography revealed that the isothiourea moiety was making an extended network of hydrogen bonds with functional groups that were key to BACE1's catalytic activity.

This is the hardest part of the reaction, said Rousseau, and it makes the bond between the remaining hydrogen and boron unstable.

In the process of hydrogenation, hydrogens are added to the unsaturated carbons in a double bond making the fatty acid more saturated.

For example, the hydrogen bonding interaction between the phenolic — OH and the o - methoxy groups in curcumin influences the O - H bond energy and H atom abstraction by free radicals, thus making it a better scavenger of free radicals compared to other curcuminoids such as BDMC.

The saturation of the hydrogen bonds made this much more stable chemically than the polyunsaturates.

Learn about water molecules: All you really need to know to do this activity is that the water molecule is made from the bonding of two atoms of hydrogen to one atom of oxygen.

And then I made a discovery: BREAKTHROUGH: Hydrogen Bonding as The Mechanism That Neutralizes H2O Polarity https://goo.gl/Hrb6Sb