Sodium and other alkali explosions finally explained - Science News
2015年1月26日 · With snapshots from a high-speed camera, chemists can finally explain why sodium and other alkali metals blow up in water. Just before the explosion, spikes burst from the metal’s smooth...
Sodium's Explosive Secrets Revealed | Scientific American
2015年1月27日 · It’s the classic piece of chemical tomfoolery: take a lump of sodium or potassium metal, toss it into water and watch the explosion. Although this piece of pyrotechnics has amazed generations...
Sodium-Potassium-Really-Explode-Water - Chemical & Engineering …
2015年1月27日 · For decades, science enthusiasts have delighted at the famously energetic way sodium and potassium explode on contact with water. Researchers in Europe now show that the long-accepted explanation for the way that process unfolds is incomplete (Nat. Chem. 2015, DOI: 10.1038/nchem.2161).
Sodium's explosive secrets revealed | Nature
2015年1月26日 · To get a reliable reaction — sodium sometimes oxidizes on the surface and will not explode — Mason used an alloy of sodium and potassium that is liquid at room temperature. High-speed cameras...
Why this popular chemistry experiment is a blast - Science
2015年1月26日 · Researchers have found a new mechanism explaining the explosive reaction between sodium and water. Charles D. Winters/Science Source. Explosions are fun—ask any budding chemistry student. That's why dropping a chunk of pure sodium into water is a classic classroom demonstration.
Sodium explosion caught on camera - Nature
2015年1月28日 · Chemists have scrutinized a classic piece of bench chemistry — the explosion that happens when sodium metal hits water — and revised the thinking of how it works.
Why metals have a blast in water - Science News Explores
2015年2月18日 · sodium A soft, silvery metallic element that will interact explosively when added to water. It is also a basic building block of table salt (a molecule of which consists of one atom of sodium and one of chlorine: NaCl).
physical chemistry - What exactly is happening when sodium, potassium …
2012年11月24日 · Until recently the answer was unknown, but a short time ago it was discovered that the reaction is in fact a Coulombic explosion. The rapid exchange of electrons between the sodium and the water causes the surface of the sodium droplet to become positively charged, and the ions repel each other.
Sodium's explosive secrets revealed The spectacular reaction of alkali metals with water was poorly understood — despite being a staple of chemistry classes. 26 January 2015
Explained At Last: Why Alkali Metals Explode in Water
2016年3月16日 · The classic explanation of elemental sodium’s volatile reaction with water involves the simple reduction-oxidation chemistry of sodium and water: electrons flow from sodium metal into the surrounding water, forming sodium hydroxide and hydrogen gas.
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