which is a supercooled liquid?

Answer 1

''Glass'' is Known as supercooled liquid.

Answer 2

Supercooling is the process of chilling a liquid below its freezing point, without it becoming solid.

A liquid below its freezing point will crystallize in the presence of a seed crystal or nucleus around which a crystal structure can form. However, lacking any such nucleus, the liquid phase can be maintained all the way down to the temperature at which crystal homogeneous nucleation occurs. The homogeneous nucleation can occur above the glass transition where the system is an amorphous—that is, non-crystalline—solid.

Water has a freezing point of 273 K (0 °C or 32 °F) but can be supercooled at ambient pressure down to its crystal homogeneous nucleation at almost 231 K (−42 °C).1 If cooled at a rate of the order of 1 million kelvins per second, the crystal nucleation can be avoided and water becomes a glass. Its glass transition temperature is much colder and harder to determine, but studies estimate it at about 165 K (−108 °C).2 Glassy water can be heated up to approximately 150 K (−123 °C).3 In the range of temperatures between 231 K (−42 °C) and 150 K (−123 °C) experiments find only crystal ice.

Droplets of supercooled water often exist in stratiform and cumulus clouds. They form into ice when they are struck by the wings of passing airplanes and abruptly crystallize. (This causes problems with lift, so aircraft that are expected to fly in such conditions are equipped with a deicing system.)

An equivalent to supercooling for the process of melting solids is much more difficult, and a solid will almost always melt at the same temperature for a given pressure. It is, however, possible to superheat a liquid above its boiling point without it becoming gaseous


hope this helped you:)

Answer 3

Supercooling is the process of chilling a liquid below its freezing point, without it becoming solid.

A liquid below its freezing point will crystallize in the presence of a seed crystal or nucleus around which a crystal structure can form. However, lacking any such nucleus, the liquid phase can be maintained all the way down to the temperature at which crystal homogeneous nucleation occurs. The homogeneous nucleation can occur above the glass transition where the system is an amorphous—that is, non-crystalline—solid.

Water has a freezing point of 273 K (0 °C or 32 °F) but can be supercooled at ambient pressure down to its crystal homogeneous nucleation at almost 231 K (−42 °C).1 If cooled at a rate of the order of 1 million kelvins per second, the crystal nucleation can be avoided and water becomes a glass. Its glass transition temperature is much colder and harder to determine, but studies estimate it at about 165 K (−108 °C).2 Glassy water can be heated up to approximately 150 K (−123 °C).3 In the range of temperatures between 231 K (−42 °C) and 150 K (−123 °C) experiments find only crystal ice.

Answer 4

The answer is ONE: 3He.
put in your search machine (google, alta vista etc) 3He and get all the info.
just some exerpts:
Parts of the cryostat cool down to such cryogenic temperatures as 20 milliKelvin (0.02 K) using a technique called "3Helium - 4Helium Dilution." For this reason another name for the cryostat is "dilution refrigerator." This process relies on certain thermodynamic characteristics of 3He (a rare helium isotope with 1 neutron) and 4He (the most abundant helium isotope, which has 2 neutrons). http://cdms.berkeley.edu/UCB/75fridge/inxsrc/dilution/index.html

Good luck

(Chinese and Americans went back to space race towards the moon for this 3He. there is in abudance there and they need it for the nuclear fusion)

Answer 5

i have no patience to type .. so have a look in wikipedia

Answer 6

nitro

Answer 7

nitrogen