Sentences with phrase «hydrogen atoms bonded»

They differ from saturated fats by having fewer hydrogen atoms bonded to their carbon chains.

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).

Disks cool down more efficiently if their gas includes some molecular hydrogen — two hydrogen atoms bonded together — rather than atomic hydrogen, which consists of only one atom.

Typically, and logically, a positively charged hydrogen atom bonds to a negatively charged atom of oxygen, nitrogen or fluorine.

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.

Their composition is largely dependent on hydrogen atoms in the molecules, and the ability of these to create hydrogen bonds with other elements.

Nevertheless, a team from the University of Copenhagen's Department of Chemistry has managed to become the first to bond positively charged phosphorus atoms with positively charged hydrogen ones.

The diamond - like structural unit consists of six - sided rings of carbon atoms bonded together in chains surrounded by a halo of hydrogen atoms.

They are also all saturated fats, chains of single - bonded carbon atoms with hydrogen atoms neatly lined up on either side of each carbon.

Hydrogen atoms contained in water readily bond with the heavy isotope to form hydrochloric acid gas, which then leaks into space — leaving more of the lighter isotope behind.

Like water, it is held together by the powerful bonds between hydrogen and oxygen atoms, so ethanol can not travel through most petroleum pipelines.

At this temperature, the pressure in the reactor reaches 34 atmospheres, helping to break down the bonds between the hydrogen and carbon atoms in the polymer chains.

Hydrogen atoms which diffuse inside the cages only bond weakly to them, so the gas can be recovered simply by heating the material slightly.

Ethylene (or IUPAC name ethene) is the simplest alkene hydrocarbon, consisting of four hydrogen atoms and two carbon atoms connected by a double bond.

The zirconium sapped the loyalty of the electrons bonding the nitrogen pairs, weakening the link between the two atoms and letting hydrogen weasel in and latch onto the nitrogen.

He has spent his career focused on just one bond, a link between a carbon and a hydrogen atom in a molecule of methane, the main component of natural gas.

In recent years researchers have achieved better performance with compounds such as lithium borohydride, in which the metal atoms form weaker, ionic bonds with groups containing several hydrogen atoms.

Instead of a hydrophilic alcohol group (an oxygen - hydrogen molecule bound to a hydrogen - saturated carbon atom), the final lignin polymer contained a hydrophobic aldehyde group (a carbon atom double - bonded to an oxygen atom).

Atoms of most elements, such as hydrogen, oxygen and carbon, form tight chemical bonds by sharing electrons with their neighbours in order to give each atom a stable configuration of electrons.

Of the two types of atom, oxygen has more pull on the electrons that they share to form the bonds between them, so the oxygen becomes slightly negatively charged and the hydrogens slightly positive.

For example, in water (H2O) the sole oxygen atom is bound to two hydrogen atoms, and the two bonds constantly change in length.

Scientists from Tomsk Polytechnic University together with their colleagues from USA and Japan have proposed a novel way to address the most important and fundamental challenge of organic chemistry, i.e. breaking a bond between carbon and hydrogen atoms to form new organic substances.

Herein we demonstrate that a photoredox - mediated hydrogen atom transfer protocol can efficiently and selectively install deuterium (D) and tritium (T) at α - amino sp3 carbon - hydrogen bonds in a single step, using isotopically labeled water (D2O or T2O) as the source of hydrogen isotope.

But chemists at the University of Copenhagen have discovered a new kind of hydrogen bond that, at first glance, should be impossible: It's composed of two positively charged atoms, one phosphorus and one hydrogen.

Relying on a technique called infrared spectroscopy to explore the bonds between atoms, the researchers noticed it attaching to positive hydrogen atoms.

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

As the water boiled away, the hydrogen escaped into interstellar space while the oxygen came back down and bonded with carbon atoms.

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

It turns out that the answer lies in the interaction between the bonds that hold the atoms in the water molecule together and the much weaker bonds, known as hydrogen bonds, that are the glue holding groups of water molecules together.

Such interactions are dependent on chemical bonds between hydrogen atoms.

Melanie Sanford, a chemist the University of Michigan, Ann Arbor, who focuses on using metal - based agents, primarily palladium, to catalyze reactions that substitute hydrogen in carbon - hydrogen bonds with other atoms or functional groups.

For example, instead of stealing an electron from double - bonded carbons or a nearby propagating chain, the carbon atom with the free radical sometimes steals an entire hydrogen atom from another chain end.

Polyethylene consists of a chain of single - bonded carbon atoms, each still carrying its two hydrogen atoms.

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

For example, questions such as «What happens to the rest of the bonds in a chain of carbon rings if you pinch a hydrogen atom off the end?»

Again, the first one stripped off hydrogens from adjacent carbon atoms in both the long polyethylene chains and short alkanes to form double bonds; the second split the molecules and randomly stitched split molecules back together.

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.

He knew he needed to find metals that were deft at breaking the carbon - hydrogen bonds that are at the heart of methane, ethane, and propane, short hydrocarbons known as alkanes, and then add in oxygen atoms that would transform the alkanes into alcohols.

Both materials were then sprayed with hydrogen gas in which the bonds were broken to form single hydrogen atoms.

«The Ru catalyst precisely distinguishes butadiene and substituted acetylene molecules and new carbon - carbon bonds are formed among a butadiene with two acetylenes just by migration of the terminal hydrogen atoms in butadiene.

Water, for example, with one oxygen and two hydrogen atoms, can form two hydrogen bonds per molecule.

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.

Aspirin, for example, contains just 21 atoms (nine carbons, eight hydrogens and four oxygens) bonded together to form a particular shape.

When the methane is irradiated it is churned into ethane and other more complex organics (the molecule loses a hydrogen bond and more carbon atoms become chained together).

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.

In the most common motif, created about 57 % of the time, hydroxide's oxygen atoms bonded with the hydrogen atoms on 4 water molecules while the hydroxide's hydrogen bonded to the oxygen atom on another water molecule.

Wiedner and Bullock focused on a cobalt catalyst and how it forms bonds with hydrogen atoms and shuffles electrons.

Methylene is the simplest member of a class of organic molecules known as carbenes, which contain an atom of carbon only bonded to two other atoms, in this case, a pair of hydrogen atoms.

Integral to the polymer's design are electron - withdrawing fluorine atoms that create sites on the polymer with more positive hydrogen atoms leading to stronger hydrogen - bonding interactions and more sensitive sensors.

The polymer and the agent form hydrogen bonds, weak electrostatic connections between polymer's hydrogen and an agent's oxygen atom.