Chemistry
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أخبار العالم
NIH grant helps Vanderbilt effort to extend variety
[ad_1] A brand new $2.5 million grant from the Nationwide Institutes of Well being is enabling Vanderbilt College chemist Renã…
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Follow us for more biological facts. #ecology#ecosystem#foodchain#science#scienc…
[ad_1] Follow us for more biological facts. #ecology#ecosystem#foodchain#science#scienceworld#physics#chemistry#biology#biochemistry#biotechonology#botany#zoology#organicchemistry#electrochemistry#electromagnet#space#goals#life#instagram#newton#alberteinstein#gravity#planets#environment#plants#animals#forensicscience [ad_2] Source
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أخبار العالم
103-year-old ex-chemist to be honored for work on penicillin
[ad_1] The story is household lore. In 1942, chemist Robert Walton, then in his late 20s, was drafted following the…
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منوعات
[Biology] #everydayscience_biology 今日等我黎講下滲透(osmosis)啦 喺日常生活入面我地未必會成日都聽到滲透呢一樣野，但…
[ad_1] [Biology?] #?everydayscience_biology 今日等我黎講下滲透(osmosis)啦? 喺日常生活入面我地未必會成日都聽到滲透呢一樣野，但係其實佢喺好多地方都進行緊。滲透係水分子經過半透膜擴散嘅一個現象。水分子會由高水勢嘅區域滲入去低水勢嘅區域，直至細胞入面同細胞外面嘅濃度達到平衡為止。 // 細胞會藉住滲透作用黎吸到水分又或者係喪失水分。但係有可能會因為咁而得到過多嘅水分又或者係失去太多嘅水。 或者用個例子黎講會比較易明。當我地將細胞放入濃嘅鹽水入面，由於濃嘅鹽水入面水的含量比例比細胞質低，細胞入面嘅水會不斷咁向細胞外面滲透，導致細胞脫水同萎縮。相反，將細胞放入蒸餾水入面嘅話呢，由於細胞入面嘅水含量比例比蒸餾水低，外面嘅水分子會不斷咁向細胞入面滲透，導致細胞膨脹，甚至破裂。 // 而對於植物細胞呢，因為佢地嘅細胞壁同細胞膜嘅滲透性唔一樣，當細胞外嘅濃度高過入面嘅時候，細胞會出現質壁分離嘅現象，即係細胞壁同細胞膜分離。但係當佢地吸返水之後就會出現質壁分離嘅復原現象。 // #everydayscience #science #physics #chemistry #biology #plants #animals #organisms #livingthings…
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[Biology] #everydayscience_biology 其實part 2只係part 1嘅Eng version聽日會再有多啲補充 Osmosis…
[ad_1] [Biology?] #?everydayscience_biology 其實part 2只係part 1嘅Eng version?聽日會再有多啲補充? Osmosis refers to the net movement of water molecules from a region of…
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The Periodic Table Song
Check out our UPDATED version which has all the NEW ELEMENTS here: https://youtu.be/rz4Dd1I_fX0 Download on ITUNES: http://bit.ly/12AeW99 DOWNLOAD ON BANDCAMP:…
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Tom Lehrer CHEMISTRY element song
follow me in twitter @iamdonhey CHEMISTRY element song. source
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The Periodic Table Song (2018 UPDATE!)
The COMPLETE Periodic Table! Check out http://asapscience.com for more iTunes http://bit.ly/asaptable Bandcamp: https://asapscience.bandcamp.com/track/the-updated-periodic-table-song-2018 … source
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فيديو
THE SAGAN SERIES – The Frontier Is Everywhere
[youtube https://www.youtube.com/watch?v=oY59wZdCDo0&w=580&h=385] For more Facebook – http://www.facebook.com/thesaganseries Twitter – http://twitter.com/reidgower G+ – http://bit.ly/VpHzQh The Sagan Series is an educational project…
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