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Liquid Nitrogen Solid Mercury Posted by: petersplim
Video duration: 430 seconds Experiment with liquid nitrogen and helium gas and merucry Related: balloon, hard, liquid, mercury, nitrogen, pl, solid, stiff |
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Liquid Nitrogen and the spinning ping pong ball Posted by: petersplim
Video duration: 89 seconds 2 holes are punctured at a slanting/glacing angle into a ping pong ball. It is then immersed in liquid nitrogen. The air inside it cools. This lowers the air pressure inside the ping pong ball. Liquid nitrogen then partly fills the ping pong ball. The ping pong ball will start to spin as cold liquid nitrogen boils shooting out cold nitrogen gas from these 2 holes. Related: ball, liquid, nitrogen, peterlim, ping, pong, spinning |
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Vacuum : Mashmallows expanding in a vacuum Posted by: petersplim
Video duration: 137 seconds Anything that has air will expand in a vacuum. When air is evacuated(exhausted out of)from a chamber, 2 mashmallows are seen to expand, as they contain some air inside them. More videos can be seen on PL Education Centre(Singapore) website: http://www.plenrich. com Related: bloat, expanding, mashmallows, pl, suck, vacuum |
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Liquid nitrogen shrinking a helium filled balloon Posted by: petersplim
Video duration: 58 seconds A helium-filled balloon is less dense than air and it can float upwards. When the balloon is shrunk by pouring liquid nitrogen over it, it becomes denser than air and falls to the ground. Upon warming and expanding, it will fly up again.This video is produced in Singapore. More videos on www.plenrich.com Related: balloon, helium, liquid, nitrogen |
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Liquid nitrogen LN2 Eating biscuit cooled in LN2 Posted by: petersplim
Video duration: 196 seconds When liquid nitrogen cooled a piece of biscuit to about -196 degree Celsius, and when we eat (munch) it with our mouth closed, streams of condensed water vapour will come out from the nostrils Related: biscuit, liquid, nitrogen |
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Helium filled balloon sinks in Helium environment Posted by: petersplim
Video duration: 115 seconds Just like a balloon filled with air sinks in air, a balloon filled with helium will not rise, but sink in a helium surrounding.Kindly look into http://www.plsingapo re.com for more science videos and info Related: balloon, density, helium, pl |
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Various oxidation states (o.s.) of Chromium Posted by: petersplim
Video duration: 380 seconds Chromium is a transition metal..it has several o.s. values which give various colours Related: chromium, colours, metal, os, transition |
![Liquid nitrogen poured onto students\](http://img.youtube.com/vi/zJwOTFm6DWg/2.jpg "Liquid nitrogen poured onto students\") |
Liquid nitrogen poured onto students' hand Posted by: petersplim
Video duration: 209 seconds Very cold liquid nitrogen vapourises immediately upon contact with warm object s like our skin. The vapour forms an insulating layer preventing more heat being lost from our warm palms. Caution: do not did your hand into liquid nitrogen for more than 1 second. Do visit our education website at www.PLsingapore.com Related: coronation, cp, hand, liquid, nitrogen, petersplim, pl |
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Liquid Nitrogen boiling in a whistling kettle Posted by: petersplim
Video duration: 51 seconds Liquid nitrogen boils at -196 degree Celsius. When the liquid boils out of a whistling kettle, it makes the latter whistle, but the kettle is cold and not hot as common perception of a whistling kettle whistling is associated with boiling hot water. Related: liquid, nitrogen |
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Liquid nitrogen shrinks rubber balloon Posted by: petersplim
Video duration: 257 seconds Very cold liquid nitrogen slows down the air molecules inside a balloon and its volume shrinks. The flexible nature of the macromolecules of rubber also changes to be stiff. Related: balloon, coronationplaza, cp, liquid, nitrogen, petersplim, pl |
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Pressure cups demonstrating atmospheric pressure Posted by: petersplim
Video duration: 330 seconds These pressure cups can support up to 60 kg force. They are usually used in carrying huge piece of glass. It demonstrates the great pressure exerted by our atmospheric pressure at sea level Related: atmospheric, cups, girls, pl, plenrich, plsingapore, pressure, singapore, sms, suction |
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Things swelling in Vacuum Posted by: petersplim
Video duration: 315 seconds When something like balloon or a spoonful of whipped cream, containing air is put inside a vacuum: it will swell. Related: cream, jurongeast, petersplim, pleducation, plenrich, plenrichment, vacuum, whipped |
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Colourful Universal Indicator UI Posted by: petersplim
Video duration: 181 seconds By diluting aqueous ammonia (a weak alkali) or aqueous ethanoic acid (a weak acid), the 6 colours of UI can be obtained. Visit www.PLsingapore.com Related: acid, bases, chemistry, pl, plenrich, plsingapore, salts, ui |
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PL students munching liquid nitrogen-cooled biscuits Posted by: petersplim
Video duration: 243 seconds When very cold liquid nitrogen cools the humid air inside our mouth,condensed droplets of water form. They come out through our nostril as "smoke" Related: liquid, lucia, nitrogen, petersplim, pl, plenrich, plsingapore, tabitha, ulindra, zhexuan |
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Liquid nitrogen shrinks balloon of a 4 year old child Posted by: petersplim
Video duration: 121 seconds Liquid nitrogen shrinks the bunny balloon of a 4 year old child. She is not too young to learn about Liquid nitrogen. Her name is Isabel from Singapore. Related: balloon, bunny, isabel, liquid, nitrogen, petersplim |
