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  • Warning

    警告!此影片為危險實驗,請勿模仿!

  • Hello everyone. Today I will tell you about the most active and unusual metal on earth: Cesium.

    大家好。今天我將介紹地球上最活躍和最特殊的金屬:銫。

  • Cesium is an active alkaline metal, which is located near the bottom of the periodic table of chemical elements

    銫是一種活性鹼金屬,位於化學元素週期表的底部

  • only Francium(Fr) can be more active than Cesium(Cs).

    只有鈁(Fr)比銫(Cs)更活躍。

  • but that metal is radioactive and an un insignificant amount of it

    但是鈁(Fr)是放射性的,並且它的數量極少

  • was obtained in its pure form to do any experiments with it.

    很難使用純鈁(Fr)進行任何實驗。

  • because of its high activity, metallic Cesium is being stored in special ampules

    由於其活性高,銫金屬被保存在特殊的安瓿中

  • and inert atmosphere of either Argon or Hydrogen.

    保存於惰性氣體,氬氣或氫氣中。

  • Appearance wise, Cesium has a yellowish tint like gold.

    外觀上來說,銫具有黃金般的黃色色調。

  • but the price for Cesium is still higher than Gold

    但銫的價格高於黃金

  • due to its extremely small sales market and its highest activity,

    由於銷售市場極小和其高流動率,

  • price of Cesium can reach over €100 per gram.

    銫的價格可以達到每克100歐元以上。

  • The vial, you should see on the screen, is 50 grams of cesium.

    你在影片中看到的這一小瓶是50克的銫。

  • Just imagine it's cost.

    想像一下它的成本

  • Cesium is unusual, that it has a very low melting pointonly 29℃.

    銫很特殊,它的熔點非常低,僅有29℃

  • If you take a vial of Cesium in hand,

    如果你中手握著一小瓶銫

  • you can see how quickly the metal begins to melt.

    你可以看到金屬開始融化的速度有多快

  • Even while Cesium is still in the vial, we can already conduct experiment with it.

    即使銫還在小瓶中,我們已經可以開始進行實驗。

  • If you leave the liquid Cesium, in a vial for some time,

    如果你將液態銫留在小瓶中一段時間,

  • it partially hardens, forming very beautiful crystals of pure Cesium

    它會有部分硬化,形成非常漂亮的純銫晶體

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    此外,由於銫開始凝固,其體積正顯著的減少

  • Also, due to Cesium's solidification, its volume is being significantly reduced

    可以透過安瓿內固化中的銫 所產生的漏斗形狀清楚的觀察到。

  • as can be clearly seen with a funnel formed from solidified Cesium in the ampule.

    現在,讓我們進入最有趣的部分:用銫進行實驗。

  • Now, lets proceed to the most interesting part: conducting experiments with Cesium.

    首先,為了將銫從小瓶中取出,我決定將銫先融化在小瓶中

  • Firstly, to get the Cesium out of the vial, I decided to melt it in the vial

    然後將液態銫倒入煤油中。

  • and then pour out the liquid Cesium in kerosene.

    然而,某步驟出了問題。

  • However, something went wrong during that part.

    液態銫立即在空氣中點燃,燃燒周圍的一切

  • cracking and screaming

    這種情況很有可能是因為小瓶中的銫是液態

  • The liquid Cesium instantly ignited in air, burning everything around it.

    在使用槌子破壞時,安瓿的頂部脫落,銫倒在桌子上。

  • That happened most likely due to the fact that the Cesium in the vial was liquid

    您可以看到接下來發生的事,桌子已經無法在使用了。

  • after the hammer happened, the top of the vial broke off, pouring Cesium onto the table.

    但是沒關係,我們還有更多的桌子

  • You can see what happens next, the table is now out of use.

    為了更進一步的實驗,我們需要在購買一瓶銫。

  • But that's okay, we still have more tables.

    現在我決定採取不同的做法:以固體銫性態時打破安瓿的末端,然後在煤油中加熱

  • For further experiments, we get to buy another vial of Cesium.

    這一切都很順利,液體銫逐漸開始從小瓶流入煤油。

  • Now I decided to do things differently: break the end of ampule with solid Cesium and then heat in kerosene

    接觸煤油後銫立即失去其金色光澤,並覆蓋上一層氧化物和過氧化物。

  • This all turned out well, gradually the liquid Cesium began to flow from the vial into the kerosene.

    由於煤油中雜質 水和氧氣。

  • After reach it immediately lost its golden shine and get covered with a layer of oxides and peroxides.

    我決定把還殘留液態銫的安瓿 丟到潮濕的牆上銷毀。

  • Due to the impurity of water and oxygen in kerosene, I have decided to destroy

    固化後,即使用刮刀,也可以輕鬆地將銫切割。

  • the vial with the remains of liquid Cesium by throwing it onto a wet wall.

    它不僅是最活躍的,也是世界上最柔軟的金屬。

  • Explosion

    它的柔軟度類似於奶油。

  • After solidifying, the Cesium can be easily cut, even with a spatula.

    這是YouTube上第一次,您可以觀察到銫被切割。

  • And it is not just the most active, but also the softest metal in the world.

    首先,我拿了一塊銫,然後把它放在一塊木頭上。

  • It resembles margarine for its softness.

    銫接觸到空氣中的氧氣 而產生氧化反應而融化

  • For the first time on YouTube, you can now observe Cesium is being cut.

    然後銫離子自燃,而形成一個美麗的洋紅色火焰。

  • First, I took a piece of Cesium, and put it on a piece of wood.

    銫在餐巾紙上的反應也相當類似。

  • Cesium melts from the oxidation reaction of oxygen in the air

    此外,為了與銣對比,我決定實驗銫與沙子的反應。

  • and then self ignites with a beautiful magenta flame due to Cesium ions.

    銫會與二氧化矽產生反應,在沙子上燃燒銫和燃燒銣的反應相似

  • Burning

    沙子平靜地形成一層美麗且閃亮的表面,也就是非晶體矽。

  • Cesium also behaves similarly on the napkin.

    接下來,我決定使用高溫的銫與硫酸錳反應,反應並不是很激烈。

  • Burning

    但是當它形成金屬錳時,比在上沙子上的反應更好。

  • Furthermore, by analogy with Rubidium, I decided to conduct the reaction of Cesium with sand.

    到目前為止最酷的反應是銫與硫。

  • Igniting Cesium on sand, similarly to rubidium, Cesium reacts with the silica

    我們把這塊銫扔進熔融硫磺的中。

  • which the sand consists of very calmly and forms a beautiful sandy surface and also, an amorphous silicon.

    在此反應中,這兩種元素形成硫化銫。

  • Next, I decided to let hot Cesium react with manganese sulfate, the response wasn't very rough.

    我們還決定將銅與銫融合,

  • But it is better that it was with sand, when it's formed a metal manganese.

    由此形成了一種特殊的化合物,即銅和銫的金屬間化合物

  • The coolest reaction by far was Cesium with sulfur.

    由於銫被氧氣氧化,最終腐爛。

  • Where we throw the piece of Cesium in molten sulfur.

    如果你將一片銫放入裝有乙醇的玻璃杯中,銫即使在酒精中也會自燃,

  • crack and explosion

    由於銫離子,酒精的火焰色為美麗的紫色。

  • In that reaction the two elements forms Cesium sulfide.

    最後,我們決定在裝滿冰水的容器中放入約20克的銫。

  • Also we decided to fuse copper with cesium,

    如您所見,銫與水一接觸時就會爆炸。

  • with that an unusual compound was formed, the intermetallic compound of copper and cesium

    雖然相較於其他影片中的敘述,反應並沒有那麼激烈

  • which eventually decayed due to cesium's oxidation by atmospheric oxygen.

    銫具有多種應用,目前金屬銫用於最精確的原子鐘。

  • If you throw a piece of Cesium into the glass filled with ethanol, Cesium will self ignite even in alcohol,

    每1億年僅有1秒的誤差。

  • coloring the flame of alcohol to beautiful purple due to Cesium ions.

    此外,銫也運用於軌道衛星的新引擎。

  • Lastly, we decided to throw about 20 grams of Cesium in container filled with the ice water.

    直到大約在21世紀初,在微電子產品興起之前,

  • Explosion

    銫已廣泛用於光電池和運動感應器。

  • As you can see, Cesium explodes on the first contact with water.

    然而,在市場充斥著廉價的晶體管類比之後,

  • Although not so strongly as it's sometimes portrayed in other videos.

    人造金屬銫的需求消失了,其價格急劇上漲。

  • Cesium has a variety of applications, these days metallic Cesium is used in the most accurate atomic clocks.

    最後,我要感謝MEL科學公司。

  • The error of which is only a second per 100 million years.

    沒有他們,我們無法製作這部影片。

  • Also, Cesium is used in the new engines for orbital satellites.

    銫非常的昂貴,更別說還燒壞了桌子。

  • Until about the early 2000s, before the rise of micro electronics,

    但各位觀眾,這一切都是為了科學。

  • Cesium has been widely used in photocells and motion sensors.

    你會學到很多關於這種特殊的金屬:銫。

  • However, after the market has been flooded with cheap transistor analogies,

    如果你喜歡我的影片請點擊讚,訂閱我的頻道,並參觀我們的讚助商MEL Science的網站。

  • the need of such a number of manufacturing metallic cesium disappeared and the price had since arisen sharply.

    謝謝您的收看!

  • And lastly, I would like to thank the company MEL Science.

  • Without them, the production of this video would have been impossible.

  • The Cesium was worth a lot of money, not mention the burning of the table.

  • It was all done for science, and so that you, my channel viewer,

  • who would learn a lot of about this amazing metal, Cesium.

  • Like the video if you enjoyed it, subscribe my channel, and also visit the website site of our sponsor, MEL Science.

  • Thank you for watching!

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Warning

警告!此影片為危險實驗,請勿模仿!

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銫--地球上最活躍的金屬! (Cesium - The most ACTIVE metal on EARTH!)

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    deghyp 發佈於 2021 年 01 月 14 日
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