Potassium (version 1) - Periodic Table of Videos

[Timurv1234]

Oh My God , Neil Talked ,about 10 seconds ! :O

[BubbaHoggit]

I saw the bald guy at the beginning and I'm like: "Oh my god, he shaved his afro..."

[tacoyum6]

HE TALKS!

[FordPrefect23]

I remember the potassium + water experiment at school from GCSE chemistry, it was one of the few things that got the attention of even the pig ignorant brain dead chavs at the back of the class.

[DannyFox06]

@FordPrefect23 too right, they used to steal it to throw it into the toilet cisterns at the school I went to.

[FreeThinkingOpenMind]

Smart guy + Crazy hair = Professor

[Axel2989]

lol the crazy professor

[ars3n]

"NaK" is an alloy NOT an amalgam, Mr. Professor.

[jdragon1012]

@ars3n your wrong im afraid. alloys are mixtures, not new substances. amalgams are formed when you recact a metal with murcury. alloys are two melted metals mixed together in a cup and then solidified. much is the same in the way we make gold jewelry, gold is to soft so we will mix harder metals in with it to strenthen it. NaK is a chemical compound not a mixture. NaK is held together by chemical bonds which is not a characteristic of an alloy. amalgams are chemical changes, alloys are physical

[ars3n]

@jdragon1012: A mixture of Na and K is always called NaK alloy in industry, never "amalgam", as the term amalgam is always refered to mercury with something else.

Perhaps one can call NaK something else, but definitely not an "amalgam".

Speaking of NaK, I'm not sure if NaK is an actual chemical compound, not some pseudo-mixture, as the "alloy" exist over a wide range of composition, and exist as eutectic mix at about 78% K, and solid or perhasps, I should say very "viscous" otherwise.

[bustincapz]

kalium is awesome!!! 8)

[r0galik]

really quite

[Tsugimoto1]

Is it me, or does the professor's hair get bigger and bigger every time they interview him? :-D

[nintendowns]

its making more room for his enlarging brain :)

[Zanderif]

Hair does tend to get longer and longer as time goes by. I jest, of course, in retaliation to you joke.

[roy219219]

very simple~

[ZZchaz]

Thank you, Niel! :)

[NW0Zezima]

Well my science teacher clearly used waaaay too much K because the explosion was AT LEAST 10X the size of that. Made like white smoke line in all directions and landed on people. It was cool and funny! Coz the teacher frightened himself! I SHOULDA KEPT ON CHEMISTRY! BLASTED PHYSICS!!!

[doktorskum]

Corr this is bags of fun! I made loads of NaK at Nottingham in the early nineties. It didn't catch fire immediately in air though. If you want to make some, cut and clean some Na (7.4g) and some K (26.5g) under oil. Wash with hexane and dry under a protective Ar atmosphere. Now, shake the lumps of metal together in your glass vessel. Hey presto, the metal lumps will melt. The process is quite endothermic and you can get ice on the vessel.

[flyffplaya]

i have a potassium ore that was mined from the cory mine, and they said it contains alot of iron in it, you think it'll blow up if i put it in water ?

[doktorskum]

no. It is already part of a compound. You would need to extract as pure element.

[1950sparks]

Try it !

[Blingking502]

I want a drop some NaK!

[JeremyBechen]

I must obtain NaK! I must obtain some Sodium-Potassium amalgam!! :)

[Odjii]

K is evil! :O

[shakieranl2]

i like the profs fingers when he says sodium:D

[ting19898989]

why they alway lough when the chemical explode?

[johnclavis]

Because they aren't dead!

[CasaTchucks]

fantastic hair, professor!!!!!

[ayerodger]

i dare you to use any even bigger bit

[Chansey913]

The potassium would be in a compound, so it prefers to stay in the compound than react with the water. Just like sodium is reactive, but as NaCl or common salt it prefers not to react with water.

[Joshomedia]

i really dont get if we have potassium in our bodies, and if we have 70% water, and they can react dont we have chem reactions in our bodies?

[NobodyHasThisNick]

We have reactions. Just not like that beacuse we have potassium CATIONS. They have one electron less than metallic potassium, so they are not reactive in that way with water.

[Barnsk]

Anions, surely?