When exposed to the atmosphere, zinc reacts with oxygen to form zinc oxide, which further reacts with water molecules in the air to form zinc hydroxide.

When burned in dry air, it mainly forms sodium peroxide as well as some sodium oxide.

When stainless steel parts such as nuts and bolts are forced together, the oxide layer can be scraped off, causing the parts to weld together.

When contaminated with the oxide, thorium slowly tarnishes in air, becoming gray and finally black.

When finely divided, it can react with cold water ; in air, uranium metal becomes coated with a dark layer of uranium oxide.

When the gate is more positive, it attracts electrons, inducing an n-type conductive channel in the substrate below the oxide, which allows electrons to flow between the n-doped terminals ; the switch is on.

When a voltage is applied between the gate and body terminals, the electric field generated penetrates through the oxide and creates an " inversion layer " or " channel " at the semiconductor-insulator interface.

When Jungner built the first Ni – Cd batteries, he used nickel oxide in the positive electrode, and iron and cadmium materials in the negative.

When expelled from the can, the nitrous oxide escapes emulsion instantly, creating a temporary foam in the butterfat matrix of the cream.

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 insufficient oxygen is available from the exhaust stream, the stored oxygen is released and consumed ( see cerium ( IV ) oxide ).

When nitrous oxide decomposes, a single mole will release 1 / 2 mole of oxygen gas, allowing an oxygen saturation of 33 % to be reached.

When the purge system is activated, one or more plumes of nitrous oxide will be visible for a moment as the liquid flashes to vapor as it is released.

When exposed to air at room temperature, or any other gas containing oxygen, pure aluminium self-passivates by forming a surface layer of amorphous aluminium oxide 2 to 3 nm thick, which provides very effective protection against corrosion.

When an external voltage is applied, water at the cathode side will undergo electrolysis to form hydrogen and oxide ions ; oxide ions will be transported through the electrolyte to anode where it can be oxidized to form oxygen.

When FMO3 is not working correctly or if not enough enzyme is produced, the body loses the ability to properly break down trimethylamine ( TMA ) from precursor compounds in food digestion into trimethylamine oxide ( TMAO ) through a process called N-oxygenation.

When polarised to more negative voltages the oxide releases oxygen ions into the CaCl < sub > 2 </ sub > salt, which exists as CaO.

When ignited, the mixture smolders at about, producing sodium chloride, iron oxide, and about 6. 5 man-hours of oxygen per kilogram of the mixture.

When Ralph Nader described plutonium as " the most toxic substance known to mankind ", Cohen, then a tenured professor, offered to consume on camera as much plutonium oxide as Nader could consume of caffeine, the stimulant found in coffee and other beverages, which in its pure form has an oral () of 192 milligrams per kilogram in rats.

When endothelin binds to ET < sub > B </ sub > receptors, this leads to the release of nitric oxide ( also called endothelium-derived relaxing factor ), natriuresis and diuresis ( the production and elimination of urine ) and mechanisms that lower blood pressure.

When aluminum wire is terminated properly, the mechanical connection breaks the thin, brittle layer of oxide to form an excellent electrical connection.

When Heidegger and Sartre speak of a contrast between being and existence, they may be right, I don't know, but their language is too philosophical for me.

When they express themselves it is incandescent hatred that shines forth, the rage of repudiation, the ecstasy of negation.

When I try to work out my reasons for feeling that this passage is of critical significance, I come up with the following ideas, which I shall express very briefly here and revert to in a later essay.

When the proprietor dies, the establishment should become a corporation until it is either acquired by another proprietor or the government decides to drop it.

When the reactionary response is thus bolstered by an intellectual defense, the characteristics of that defense are explicable only in terms of the basic attitudes of unanalyzed reaction.

When I take over Taliesin, the first thing I'll do is fire you ''.

When someone in the audience rose and asked how does it feel to be a celebrity, Carl said, `` A celebrity is a fellow who eats celery with celerity ''.

When decision makers act within this frame they determine whether a claim put forward in the name of religion is to be accepted by the larger community as appropriate to religion.

When we consider the disorganized state of the world community, and the legacy of predispositions adversely directed against all who are identified as Jews, it is obvious that the struggle for the minds and muscles of men needs to be prosecuted with increasing vigor and skill.

When we turn to Aristotle's ideas on the moral measure of literature, it is at once apparent that he is at times equally concerned about the influence of the art.

When their faith in civil liberties is tested against strong pressures of social expediency in specific issues, e.g., suppression of `` dangerous ideas '', many waver and give in.

There is, of course, nothing new about dystopias, for they belong to a literary tradition which, including also the closely related satiric utopias, stretches from at least as far back as the eighteenth century and Swift's Gulliver's Travels to the twentieth century and Zamiatin's We, Capek's War With The Newts, Huxley's Brave New World, E. M. Forster's `` The Machine Stops '', C. S. Lewis's That Hideous Strength, and Orwell's Nineteen Eighty-Four, and which in science fiction is represented before the present deluge as early as Wells's trilogy, The Time Machine, `` A Story Of The Days To Come '', and When The Sleeper Wakes, and as recently as Jack Williamson's `` With Folded Hands '' ( 1947 ), the classic story of men replaced by their own robots.

When I first came across Samuel Johnson's pronouncement, `` the remedy for the ills of life is palliative rather than radical '', it seemed to me to sum up the profoundest of political and social truths.

When all else fails, it is argued that open sessions slow down governmental operations.

When a person has thoughtlessly or deliberately caused us pain or hardship it is not always easy to say, `` Just forget it ''.

When a person meets God's requirements for the experience of forgiveness he is forgiven.

When I hold my son he stiffens his whole body in my arms until he is as straight and stiff as a board.

When different colors are used, she is just as likely to color trees purple, hair green, etc..

When we become firm enough to stand for those ideals which we know to be right, when we become hard enough to refuse to aid nations which do not permit self-determination, when we become strong enough to resist any more drifts towards socialism in our own Nation, when we recognize that our enemy is Communism not war, and when we realize that concessions to Communists do not insure peace or freedom, then, and only then will we no longer be `` soft ''.

When one powerful nation strives to emulate the success of another, it is only natural.

When a man is laid to rest, he is entitled to stay put.

When I talked to Ching about it, he said, Everyone can learn, if he is not a Reactionary or lazy.