Sentences with phrase «form hydrogen atoms»

About 378,000 years after the Big Bang, as the universe cooled and expanded, electrons and protons began to bind together to form hydrogen atoms.

As for what they were doing, once the universe was cool enough to form hydrogen atoms, it was also cool enough for those elements to start interacting with each other and combining into molecules.

Cosmic and biological evolution involve change in structures — as, for example, when electrons and protons form hydrogen atoms.

Not exact matches

If humans were not designed by a higher authority, how can each individual's DNA be uniquely different among the human species, especially different than the other animals; how can the life sustaining elements be constantly available and exist in exact formulations: O, H, C etc. water is always 2 atoms of Hydrogen and one atom of Oxygen; sugar, fats, grains, and any bio-chemical products can be broken down to their simplest forms of elements, but can be re-constructed with specific (not by chance) formula.

Every atom that make up this planet, every plant, every creature above hydrogen (and a small percentage of helium) was formed in the belly of a dying star, including the gold.

Ionized hydrogen atoms could then easily combine with oxygen, forming our H2O ice.

Hydrogen atoms remained in this neutral state until stars and galaxies began to form.

As the gas becomes denser, two hydrogen atoms could occasionally combine to form a single hydrogen molecule.

The hydrogen - bearing material is volatile (easily vaporized), and may be in the form of water molecules (two hydrogen atoms bound to an oxygen atom) or hydroxyl molecules (an oxygen bound to a hydrogen) that are loosely bound to the lunar surface.

The hydrogen atoms fuse together into heavier and heavier elements and in the fusion process the star emits radiation in the form of light, that is, energy.

Within these clouds, on the surfaces of tiny dust grains, hydrogen atoms link with oxygen to form water.

Their theory showed how a film of negatively charged electrons covering the palladium could combine with positively charged protons from the water's hydrogen atoms to form neutrons.

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.

A second, well - understood form of epigenetic signaling, called DNA methylation, involves the addition of a methyl group — a carbon atom plus three hydrogen atoms — to particular bases in the DNA sequence.

Like hydrogen, oxygen, and iodine, nitrogen normally exists as two - atom molecules in the form of a gas at room temperature.

Looking at Comet ISON's chemical fingerprints — its ratio of carbon dioxide to water, its mix of different kinds of hydrogen atoms, the kind of dust grains it contains — will indicate where it formed 4.56 billion years ago, and thus put the wandering - Jupiter theory to the test.

(The unusual form of hydrogen let scientists correct results for oxygen atoms lost in H2O, for instance when the bear urinated.)

By raising the temperature to 85 °C and adding more hydrogen, the researchers got some of the paired nitrogen atoms to add two more hydrogens; then, each nitrogen atom left its partner completely to form ammonia (NH3).

But its intended partner, the fluorine atom, is almost always hidden behind an argon atom, so the hydrogen has to form a linear molecule with argon in between: HArF.

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.

Hydrogen atoms are formed in such devices only when electrons flow into a fluid where they can combine with hydrogen ions; those atoms in turn combine with each other to create hydroHydrogen atoms are formed in such devices only when electrons flow into a fluid where they can combine with hydrogen ions; those atoms in turn combine with each other to create hydrohydrogen ions; those atoms in turn combine with each other to create hydrogenhydrogen gas.

For about 150 million years after the Big Bang, the Universe was a «dark» place, made of just hydrogen and helium atoms, as the first stars had yet to be formed.

Scientists are using a pioneering method of «caging» and cooling water molecules to study the change in orientation of the magnetic nuclei at the centre of each hydrogen atom — a process which transforms the molecule from one form of water to another.

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.

«We take a molecule of the natural gas constituent methane (CH4) and replace one of its hydrogen atoms with a bromine atom to form methyl bromide (CH3Br),» explains Pérez - Ramírez.

The universe was cold and black — a sea of hydrogen and helium atoms mixed with a mysterious dark form of matter making its presence known only by its gravity.

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.

Most hydrogen atoms consist of a proton and an electron, but some also boast a neutron, forming deuterium.

In a 1931 article in The Strand Magazine entitled «Fifty Years Hence» 1, he described fusion power: «If the hydrogen atoms in a pound of water could be prevailed upon to combine together and form helium, they would suffice to drive a thousand - horsepower engine for a whole year.»

Such clouds formed about 400,000 years after the Big Bang, when the cosmos cooled sufficiently to allow charged protons and electrons to bind together to form electrically neutral hydrogen atoms.

Back then, all stars needed to form was a primordial soup of mostly hydrogen and some helium atoms, perturbed by the effects of gravity on minuscule differences in the density of the gases, and the mysterious substance known as dark matter.

In the experiment, plastic simulates compounds formed from methane — a molecule with just one carbon bound to four hydrogen atoms that causes the distinct blue cast of Neptune.

But marrying an antielectron to an antiproton to form a bound antimatter counterpart to the hydrogen atom was not achieved until the mid-1990s.

The cosmos as we know it started to take shape when atoms and ions paired up to form molecular hydrogen, which expelled heat out of the gas clouds, allowing them to cool down enough to form the first stars.

Present in all atoms except the most common form of hydrogen, neutrons together with protons form the atomic nucleus.

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.

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

Central to the study is the idea that rocks that appear dry to the human eye can actually contain water — in the form of hydrogen atoms trapped inside natural voids and crystal defects.

«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.

They think this involves oxygen and hydrogen atoms formed during or after the etching process, which attach themselves to the internal surface of the porous structure.

When the team of geologists from Stanford University re-created these conditions in a lab to try to duplicate an ultralow - velocity zone, they found that iron — one of the more abundant minerals on Earth and a likely candidate material that might explain the zones — reacted with the seawater to create a form of iron peroxide that was saturated with hydrogen atoms, according to the new research.

The researchers discovered that the unique manner in which the platinum and nickel atoms arrange themselves on the surfaces of these particles serves to optimally accelerate the chemical reaction between hydrogen and oxygen to form water.

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

After a star has formed, it generates energy at its hot, dense core through the fusion of hydrogen atoms into helium.

Stars below about 1.5 times the mass of the Sun (or 1.5 solar masses) fuse hydrogen atoms together in a series of stages to form helium, a sequence called the proton - proton chain.

The ionized hydrogen, with atoms violently stripped of their electrons, seems to fill the interior of the superbubble while the neutral hydrogen forms its walls and cap.

For a star with at least 0.5 solar masses, once the hydrogen supply in its core is exhausted and it expands to become a red giant, it can start to fuse helium atoms to form carbon.

High PI and DBI equals short lifespan MLSP despite mitochondrial Glutathione and Thioredoxin trying its best to scavenge membrane Hydroperoxides formation from hydroxyl radical stealing hydrogen atom from unsaturated fatty acids (initiating lipid peroxidation propagation forming highly mutational reactive aldehydes (MDA, MDA - TBARS), alkenals (4 - HNE), methylglyoxals (creating glucosepane, MDA - Lys, CML, pentosidine, CEL, furosine from Amadori).