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When dissolving a lipophilic or amphiphilic substance in a polar environment, the polar molecules ( i. e., water in an aqueous solution ) become more ordered around the dissolved lipophilic substance, since the polar molecules cannot form hydrogen bonds to the lipophilic areas of the amphiphile.
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When and dissolving
** Sodium chloride ( table salt ) or any other salt in water forms an electrolyte: When dissolving, salt dissociates into ions.
When the Democratic Progressive Party was established in 1986, President Chiang decided against dissolving the group or persecuting its leaders, but its candidates officially ran in elections as independents in the Tangwai movement.
When the Vichy authorities in Africa surrendered after token resistance, the Germans responded by occupying all of France and dissolving what remained of the French Army.
When in proximity to lye that is dissolving in an open container of water, the use of a vapor-resistant face mask is recommended.
When SO < sub > 3 </ sub > is added to water, rather than simply dissolving, it tends to form a fine mist of sulfuric acid, which is difficult to manage.
When Zell stepped away from central leadership, the Church of All Worlds suffered internal strife that led to most of the church dissolving.
When Giorgio is preparing to take a five-day leave, Fosca shows up unexpectedly, dissolving into hysteria and begging him to return soon.
When the attack on the Templars in England began in 1308 Greenfield was favourable to them and so refused to take any part in actions against them within the province of Canterbury ; he was however present at the Great Council of Vienne in 1312, when Pope Clement V issued an edict dissolving the Order of the Templars.
" When Congress impeaches him, he responds by dissolving the legislative branch, assuming the “ temporary ” power to make laws as he " transforms himself into an all-powerful dictator.
When and lipophilic
When a molecule of a lipophilic substance is enveloped by water, surrounding water molecules enter into an ' ice-like ' structure over the greater part of its molecular surface, the thermodynamically unfavourable event that drives oily substances out of water.
When and amphiphilic
When performing experiments with denaturants, surfactants or other amphiphilic molecules, the microenvironment of the tryptophan might change.
When and substance
When a molten metal is mixed with another substance, there are two mechanisms that can cause an alloy to form, called atom exchange and the interstitial mechanism.
When tested in patients, the research substance LY2140023 yielded promising results and had few side effects.
When certain ionic compounds containing bromine are mixed with potassium permanganate ( KMnO < sub > 4 </ sub >) and an acidic substance, they will form a pale brown cloud of bromine gas.
When particles in a beam are thrown against a foil made of a certain substance, the cross section is a hypothetical area measure around the target particles of the substance ( usually its atoms ) that represents a surface.
When a particular substance, whether chemical or biotic — reaches unsafe levels in the bloodstream, the body can effectively dilute — or at least maintain equilibrium of — the offending substances by storing it in new fat tissue.
When the reactive substance comes in contact with the resin, it will bond to it, removing it from the air stream.
When jewelry containing sapphires or rubies is heated, it should not be coated with boracic acid or any other substance, as this can etch the surface ; they do not have to be " protected " like a diamond.
When the electric field applied across an insulating substance exceeds in any location the threshold breakdown field for that substance, the insulator suddenly becomes a conductor, causing a large increase in current, an electric arc through the substance.
When all atoms are arranged in a substance so that each neighbor is ' anti-aligned ', the substance is antiferromagnetic.
When a substance melts and the solid and liquid phases are in an equilibrium, it maintains a constant temperature, the melting point.
When the Ptolemies stopped exporting papyrus, partly because of competition and shortages, the Pergamenes invented a new substance to use in codices, called pergaminus or pergamena ( parchment ) after the city.
When a substance undergoes a phase transition ( changes from one state of matter to another ) it usually either takes up or releases energy.
: Your eyes have seen my unformed substance ; And in Your book were all written The days that were ordained for me, When as yet there was not one of them.
When used non-technically, the term " toxin " is often applied to any toxic substance.
When combined with an MDMA or an MDMA-like substance, serotonin syndrome can result.
When one substance is dissolved into another, a solution is formed.
When a solid is heated above its melting point, it becomes liquid, given that the pressure is higher than the triple point of the substance.
When the " characteristic freezing point " of a substance is determined, in fact the actual methodology is almost always " the principle of observing the disappearance rather than the formation of ice ", that is, the melting point.
When jewelry containing rubies is heated ( for repairs ) it should not be coated with boracic acid or any other substance, as this can etch the surface ; it does not have to be " protected " like a diamond.
When and polar
When its normal prey is scarce, the arctic fox scavenges the leftovers and even feces of larger predators, such as the polar bear, even though the bear's prey includes the arctic fox itself.
When iodine is dissolved in polar solvents which are strong donor solvents such as ketones, ethers, pyridine, the formation of charge-transfer complex leads to modification of the energy gap between the two molecular orbitals, thus different wavelengths were absorbed and iodine has different color in solvents with different polarity.
When the sun is visible in the polar sky, it appears to move in a horizontal circle above the horizon.
When the polar bear was originally documented, two subspecies were identified: Ursus maritimus maritimus by Constantine J. Phipps in 1774, and Ursus maritimus marinus by Peter Simon Pallas in 1776.
When they occur, it is usually over polar regions where the air is coldest.
When landmasses are concentrated near the polar regions, there is an increased chance for snow and ice to accumulate.
When designed with time aligned physical placement, these crossovers have a symmetrical polar response, as do all even order crossovers.
When a space weather event causes radiation exposure to exceed the safe level set by aviation authorities, the aircraft's flight path is deviated to avoid the polar region.
When thermalling, the sensor will detect acceleration ( gravity plus centrifugal ) above 1 g and tell the relative netto variometer to stop subtracting the sailplane's wing load-adjusted polar sink rate for the duration.
When extremely cold air moves over relatively warm oceans, polar lows can develop.
When solar protons enter the domain of the Earth's magnetosphere where the magnetic fields become stronger than the solar magnetic fields, they are guided by the Earth's magnetic field into the polar regions where the majority of the Earth's magnetic field lines enter and exit.
When comparing a polar and nonpolar molecule with similar molar masses, the polar molecule in general has a higher boiling point, because of the dipole – dipole interaction between their molecules.
When the air reaches the polar areas, it has cooled considerably, and descends as a cold, dry high pressure area, moving away from the pole along the surface but twisting westward as a result of the Coriolis effect to produce the Polar easterlies.
When extremely cold air moves over relatively warm oceans, polar lows can develop.
When Czar Alexander I authorized an expedition to the south polar region in 1819, the authorities selected Bellingshausen to lead it as an experienced captain and explorer, and a prominent cartographer.
When can we go back and convert cartesian into polar coordinates?
When news of his fate reached the outside world, Borchgrevink paid tribute to Scott: " He was the first in the field with a finely organised expedition and the first who did systematic work on the great south polar continent ".
When Pedersen withdrew, the captaincy was offered to 36-year-old Newfoundland-born Robert Bartlett ( 1875 – 1946 ), an experienced polar navigator who had commanded Robert Peary's ship on the latter's 1909 polar expedition.
When the polar axis precesses from one direction to another, then the equatorial plane of the Earth ( indicated with the circular grid around the equator ) and the associated celestial equator will move too.
When the AO index is positive, surface pressure is low in the polar region.
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