When exposed to nitrogen clean titanium metal is covered with a titanium nitride layer.

When the child's skull bone is sufficiently thick, a titanium " post " can be surgically embedded into the skull with a small abutment exposed outside the skin.

When the fire involves burning metals like lithium, magnesium, titanium, etc.

When ferric chloride is used as the etchant, no metal parts other than titanium can be used in the etching equipment.

When alloyed with titanium and vanadium, it forms a near-invulnerable metal.

When I-125 is used therapeutically, it is encapsulated in titanium seeds and implanted in the area of the tumor, where it remains.

When taken up into the human body from the diet, the 22 standard amino acids either are used to synthesize proteins and other biomolecules or are oxidized to urea and carbon dioxide as a source of energy.

When a hydrocarbon burns in oxygen, the reaction will only yield carbon dioxide and water.

When lime is mixed with sand, it hardens into a mortar and is turned into plaster by carbon dioxide uptake.

When the partial pressure of is reduced, for example when a can of soda is opened, the equilibrium for each of the forms of carbonate ( carbonate, bicarbonate, carbon dioxide, and carbonic acid ) shifts until the concentration of in the solution is equal to the solubility of CO < sub > 2 </ sub > at that temperature and pressure.

When thrown against a hard surface, the glass would shatter and the contents would instantly ignite, liberating choking fumes of phosphorus pentoxide and sulphur dioxide as well as producing a great deal of heat.

When plants fix atmospheric carbon dioxide () into organic matter during photosynthesis they incorporate a quantity of that approximately matches the level of this isotope in the atmosphere.

When baking soda and vinegar are combined, the bicarbonate ion of the baking soda is turned into carbonic acid, which decomposes into carbon dioxide and water.

When heat radiates from the surface of the earth, it is released as long-wave radiation, which can move freely through gases composed of diatomic molecules ( such as the atmosphere's oxygen and nitrogen ), but is readily absorbed by triatomic molecules, such as carbon dioxide and water vapor.

When it has caught and eaten that prey, it closes its right aortic arch and uses its left aortic arch to flush blood loaded with carbon dioxide from its muscles directly to its stomach ; the resulting excess acidity in its blood supply makes it much easier for the stomach lining to secrete more stomach acid to quickly dissolve bulks of swallowed prey flesh and bone.

When mixed with concentrated sulfuric, they begin releasing oxygen, which can oxidise the carbonaceous dehydration products formed from organic residues by the sulfuric to carbon dioxide ; ' burning ' them off the glass.

When the organism takes in oxygen it gives off an equal volume of carbon dioxide.

When carbon dioxide dissolves in water it exists in chemical equilibrium producing carbonic acid:

When silicone is burned in air or oxygen, it forms solid silica ( silicon dioxide ) as a white powder, char, and various gases.

When the user takes in a fresh breath, some of the previously exhaled air which remains in the snorkel is recycled into the lungs, reducing breathing efficiency and causing a build up of carbon dioxide in the blood, which can result in hypercapnia.

When brought to the surface, these nutrients are utilized by phytoplankton, along with dissolved CO < sub > 2 </ sub > ( carbon dioxide ) and light energy from the sun, to produce organic compounds, through the process of photosynthesis.

When the wine was shipped to and bottled in England, the fermentation process would restart when the weather warmed and the cork-stoppered wine would begin to build pressure from carbon dioxide gas.

When exposed to the atmosphere, the pure zinc ( Zn ) reacts with oxygen ( O < sub > 2 </ sub >) to form zinc oxide ( ZnO ), which further reacts with carbon dioxide ( CO < sub > 2 </ sub >) to form zinc carbonate ( ZnCO < sub > 3 </ sub >), a usually dull grey, fairly strong material that stops further corrosion in many circumstances, protecting the steel below from the elements.

When the weather warmed in the spring, dormant yeast roused themselves and began generating carbon dioxide that would at best push the cork out of the bottle, and at worst explode, starting a chain reaction.

When the temperature is raised or the pressure is reduced ( as happens when a container of carbonated water is opened ,) carbon dioxide comes out of solution, in the form of bubbles.

When the pressure is reduced, the carbon dioxide is released from the solution as small bubbles, which cause the solution to " fizz.

When Joseph Priestley came to Birmingham in 1780, he found an able assistant in Keir, who had discovered the distinction between carbon dioxide gas and atmospheric air.

When the solution reaches an air-filled cave, a discharge of carbon dioxide may alter the water's ability to hold these minerals in solution, causing its solutes to precipitate.

When Joseph Black was studying the properties of carbon dioxide, he found that a candle would not burn in it.

When people or animals are present in buildings, ventilation air is necessary to dilute odors and limit the concentration of carbon dioxide and airborne pollutants such as dust, smoke and volatile organic compounds ( VOCs ).

When a tissue's metabolic rate increases, its carbon dioxide production increases.

When cooked in broth, gluten absorbs some of the surrounding liquid ( including the taste ) and becomes firm to the bite.

"," When the engine absorbs heat energy, the absorbed heat energy comes with entropy.

When ice melts, it absorbs as much energy as it would take to heat an equivalent mass of water by 80 ° C.

When Jean absorbs Psylocke's specialized telepathic powers, her own telepathy is increased to the point that she can physically manifest her telepathy as a psionic firebird whose claws can inflict both physical and mental damage.

When an electron absorbs energy either from light ( photons ) or heat ( phonons ), it receives that incident quantum of energy.

When a large fissile atomic nucleus such as uranium-235 or plutonium-239 absorbs a neutron, it may undergo nuclear fission.

When one promotion absorbs or purchases another, the titles from the defunct promotion may continue to be defended in the new promotion or be decommissioned.

When an electron absorbs energy either from light ( photons ) or heat ( phonons ), it receives that incident quanta of energy.

When a molecule absorbs a quantum of energy that corresponds to a transition from one molecular orbital to another molecular orbital, the resulting electronic excited state is also properly described as an exciton.

When dry it is a light flaky powder, which readily absorbs up to 40 % of its weight in atmospheric water.

When a molecule absorbs a photon, it increases the energy of the molecule.

When either of the two chlorophyll a molecules at the reaction center absorbs energy, an electron is excited and transferred to an electron-acceptor molecule.

When an electron in the system absorbs a photon of light of the right wavelength, it can be promoted to a higher energy level.

When the nucleus of uranium-235 absorbs a neutron, it undergoes nuclear fission, splitting into two " fission products " and releasing energy and, on average, 2. 5 neutrons.

When an object is pulled in the direction of motion, it gains momentum and energy, but when the object is already traveling near the speed of light, it cannot move much faster, no matter how much energy it absorbs.

When the right people come together, they bring the right thing out of each other ... With the right person, it becomes a situation of being rather than playing ... The role absorbs you and you become it.

When an electron absorbs energy in the form of one or more photons, then it moves to a more outer shell depending on the amount of energy gained.

When Carnage absorbs too much force, Mordo brings him back to his lair to drain the power into an urn.

When Lykos absorbs the energies of superhuman mutants, he transforms into Sauron, and gains a portion of that mutant's powers temporarily.

When Earth is threatened by Ego the Living Planet, Quasar absorbs Ego's essence and exiles himself into space, for fear of Ego expanding to planet-size.

When photosystem II absorbs light, electrons in the reaction-center chlorophyll are excited to a higher energy level and are trapped by the primary electron acceptors.

When David learns of a mental block within his head that prevents him from keeping the information he absorbs permanently, he asks for Emma Frost's aid in removing it.

When a system ( be it a molecule or atom ) absorbs a photon, it gains energy and enters an excited state.

When the control nanites start to infect the world, Wakanda is one of its victims when The Fold absorbs some mercenaries into its ranks.