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About the Author: livescience

26 Comments

  1. First time I ever saw potassium react fully underwater. Usually the potassium just floats on the surface, so the potassium reacts slower due to less contact with the water. This was violent af and amazing.

  2. Why did the explosion cause the bucket to leap straight up, instead of pushing it down into the table? Is the bucket elastic enough to “bounce” off the table when forced violently and suddenly downward?

  3. I am so sorry… But is there anyone else who read “Veritaserum”, thought of Harry Potter and was really confused?

  4. When I was in 9th grade a new rule was made for schools that they are not allowed to have alkali metals, heavier than sodium. So our teacher did the right thing and disposed the schools potassium stock by throwing all of at the same time into a waterbucket, in front of the whole class. One of my best memories. Half of the floor was on fire

  5. I swear, I’ve NEVER seen anyone do this that didn’t look like they were COMPLETELY taken by surprise.

  6. His new video is absolute hot garbage. A single piece of information stretched put to eighteen minutes with way too much post-commercial-break-style filler. I never thought I’d unsubscribe from his channel, but yup, I did. I miss him explaining things that genuinely took eighteen minutes to explore. This video could have been three minutes.

  7. First time I saw this reaction was in first year college chemistry lecture in the 300 seat lecture hall. Large glass battery jar taller than V’s bucket filled about half way with water. Professor cut off a chunk of potassium metal and dropped in the water. It took a few seconds for it to start to fizzle due to the oil covering the potassium. After about twenty second it really took off and started to boil. Then the thing exploded, blew the portable shield off the the lab table and the glass battery jar went into a mess of pieces all over the lab table and the first five or six rows of students. Scared the crap out of everyone. Took the professor by surprise. Prof and the lab assistants had to come in and help clean it up. Don’t remember anyone getting hurt, just wet and scared. They got lucky that the shield blocked most of glass. Prof had done the same experiment with sodium metal just before the potassium, but it was a lot slower and not nearly as explosive. Doubt any Professors would attempt that experiment today with all their rules and regulations.

  8. This may be a stupid question. But why does the bucket move upwards? I dont know shit about physics but i’d imagine the forse of the blast would push the bucket down instead of up.

  9. You have to be SO careful doing this, potassium hydroxide is super caustic and can eat away your flesh

  10. I had a teacher in middle school do this (I think? For some reason I thought he said sodium rather than potassium?) but he did it in a glass beaker… but for safety’s sake to protect the class from glass shards in a worst case scenario he put the experiment in it’s own containment container – *a glass fish tank.* To nobodies surprise, both glass objects shattered.

    After two more loud boom incidents regarding fire (Igniting a hydrogen balloon, and some sort of smoldering cinder dust in a can which he blew up adding a tube and blowing into to add air) he was more or less forced to retire early. Poor safety aside, that class was dope, and luckily I was in his first AM class so I always got to see the experiments before the school told him not to!

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