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  • @periodicvideos the plant that they use the silver in is so radiactive that you can die by just goinin it that y the silver was never return today the plants are still there and are extremly radiactive

  • Neil is chewing a nugget of wolfram.

  • Great video series. I like the professor's tie.

  • @8:09 actually it was returned, with only a very small loss of "only 1/3,600,000th" per the wikipedia article on the Manhattan Project.

  • Silver, my favourite element, and also 47, my favourite number by mere coincidence! What a great video :D Keep up the great job!

  • at 5:40 when he said torch i thought he was going to burn it

  • @mrpie131 Don't worry, he isn't like Pete. Pete probably Would torch it for fun. Like in Pumpkin Chemistry.

  • how do I get silver nitrate and on the other hand very great videos!

  • Can you use a silver nitrate solution instead of mixing it with water?

  • Probably a stupid question, but is the silver crystals worth anything? Is it "regular" silver? Just wondering if one could make lots of silver crystal like this and then sell it.

  • @Cromag3 The silver crystals are high purity silver if you used non-contaminated items in the experiment. They are worth as much as normal silver. If you are intending to make a lot of silver crystals then sell it, I suggest that you do not do so. Silver nitrate is costs more than the silver is worth.

  • The smart einstein looking guy didn't mention silver as an investment or protection from the U.S. Dollar!! Ugghhhh >:{

  • Am wondering, since silver metal occurs naturally, and since silver is duly beneficial in the human body, what is known about its effects in the outdoor environment? Or in combinations, like silver iodide?

    Since silver iodide has been/is being used to seed clouds to make precipitation is drought stricken areas, what is known about its environmental impact.

    Can you point me in the direction of anything helpful?

  • It sucks that I suck at math, because I know all this stuff but I cant prove it via calculus.

    I like physics, chemistry, and find it very interesting, but because my poor "math head" I cant pursue it as an career. At school i'm know as the science fact guy.

  • @BarlytheDwarf

    "subject" "head" just concentrate your energy more and more on math and you'll become a "subject" head eventually. don't give up.

  • Silver crystals? Thats amazing!

  • Actually, copper is the antibacterial metal. I don't know about silver.

  • @DerAnstifter Both copper and silver have antibacterial properties.

  • Check out mine- it's posted under aturton70's account, called airline plaza jewlers.

  • Torch means flashlight in the UK, that's interesting.

  • I absolutely love the way you explain everything. Makes it really easy to understand.

  • wat wud happen if u put a magnet next to that silver nano particles

  • @joshua00719 Silver is diamagnetic, so it should have a very, very, very weak repulsion to the magnet.

  • One big reason for silver for cutlery was that it didn't rust or taste bad as iron/steel or copper and its brass/bronze alloys. Silver/silver plated cutlery were used until the invention of stainless steel.

  • 5:40 thats not a solution, thats a colloid! And thats the tyndall effect when you shine the light through it, Learned that in science this semester :3

  • chuck norris has never made flash powder ... it kept exploding when he tried to stir the ingredients (of course he wasn't effected)

  • Right around 6:10, Neils is chewing something. Eating in the lab is frowned upon. :D

  • i want to have sex with silver now

  • I LOVE THE CRAZY OLD MAN

  • Why do competition reactions sound a lot like replacement reactions?

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  • I have a slightly off-topic question. In this video, deionized water was used. I actually have reverse osmosis and deionization filters, but I was always under the impression that for all intents and purposes, distilled water was superior. What was the advantage in using deionized water? The thing I like most about your videos is how I am left with more questions and curiosity after watching them. Thank you.

  • 5:00 Welsh cows have horns

  • Okay now that's an interesting reaction!

  • I'm only 14 and I enjoy these bids might as well get a head start

  • Is he chewing gum in a Chem lab? tsk tsk tsk

  • Silver Nitrate Flash Powder Nice!

  • Silver nitrate has become notorious among myself and other classmates in chemistry class. Many would stain their fingers black by accident while handling the stuff; even I have gotten this stuff on my fingers by accident.

  • is it possible to slow down the silver/copper compertition reaction to make larger crystals?

  • is silver soft?

  • @SolidArch yeah, its considered a soft metal. copper is added to harden it.

  • LOL 3:43 "something more exciting" :P

  • My chemistry instructor gave us a link to your website so we could watch these elemental videos while we were talking about matter and energy. I can certainly see why: They're not only interesting, but very informative too! Thank you for making these videos. They're absolutely wonderful!

  • @mysticwolf11

    Great... and thank your instructor....

    You might like our stuff at @sixtysymbols too, which deals with physics and astronomy!

  • @periodicvideos REALLY? omg

    i love your videos guys

    really thank you all

  • Magnesium, ouch.

  • 6:11

    Eating in the lab! NOOO!

  • You guys rock!!!

    You guys are the backbone to my chemisty knowledge;first read the book,then watch the periodicvideos :D

  • That's so cool.

    You guys are awesome.

  • was i mistaken or was that a panasonic hvx200

  • it looks like a candy corn

  • That explains my 1923 silver two dollar note.

  • When your flaming hot spoon cools, you may drink your tea.

  • I love all of your videos!! Really appreciate your ability to give the 101 and bridge to new scientific knowledge... Would love to hear / see more nanoscale applications. Thanks

  • @garrygolden: Thanks for the kind words... I'm sure more nano stuff will be on the way soon with some new stuff we have planned over the next few months!

  • Great vid, just a question, do the silver crystals fall off or are they firmly attached after drying?

  • any one else see Ernie and Bert in the flask starting at 8:51 ?

  • holy smokes! i see em! hahaha

  • LMFAO! Yes!

  • wow nice i like that better than a lot of explosions that you guys do. Do more time laspe

  • the socks arent avalible anymore they kill fish after being washed :(

  • ew!

  • what did he say the particle effect was called?

  • I love these videos!  Never stop!

  • The problem is that the synthetics are incorporated at 2.5-degrees, NO IDEA why, so saying they affect particular 0.5-degree cells is harder than it should be. So we'll just gloss over that entirely ;0)

    Youtube & Google search - Chemtrails, HAARP, Weather-Modification-Vietnam, Energy Weapons.

  • Used? I still use it for photography!

  • Some people still use film, I do :-(

  • digital will never come close to the quality of analog film.

  • You'r right! Digital is waaaay better, since it records each photon. Analog just imprints "blobs" of photons on the film hence reducing the sharpness and quality.

  • is still use film.

  • There you go again guys. Furthering the stereotype that all we chemists do all day in the lab is to think about new ways to blow stuff up!

    :D :D

  • Hey Neil... no eating in the lab!! (6:11) Good video.

  • very nice spot

  • Interesting video!

  • periodic table cup .. or mug. haha, I want that :D

  • spoon made by a horn of a cow... i would love to have one of those.

  • I like the time-lapse! More please!

  • omg the timelapse on the cu + agno3 rxn was amazing!

  • Indeed, but look it under a microscope and you will shit in your nerdy pants!!!

  • That was awesome!

  • WOW! that fancy new camera was worth it =] what a cool shot.

  • does anyone fancy a pint....?

  • Periodicvideos, please tell me what camera was there doing that timelapse on that tripod?Please? Kinda looks out like z7 but not sure :p

  • I think you guys ought to show the reaction of copper and an acetate solution, and tell exactly why they react that way with one another. I dehydrated a Copper (II?) Acetate solution and got beautiful crystals.

  • Or actually, could you show us the reactions of several metal with the Acetate solution, and tell us why they produce the opacities and colors that they produce? (For instance, I found that if you left Bismuth in an acetate solution for an extended period of time, the solution would become a sort of milk-esque opacity and color) I have a very easy recipe for an Acetate solution that you probably already know, but if you're curious, just message me and I can provide exact details.

  • several metals*

  • If you had added a little bit of ammonium to the water, it would have been a much cooler effect as the water would have gotten a clear blue color.

    As you mentioned, silver has good heat conductivity, and is often an ingredient in thermal grease applied between a CPU heatspreader and the cooler to get good thermal conductivity.

    As for the antibacterial purposes, i would speculate nanoparticles of elemental silver may act as a catalyst for certain lethal reactions when ingested by bacteria.

  • never really understood that, why wouldn't they make a copper thermal grease? I thought copper was far more conductive to heat then silver...

  • Silver is a better thermal conductor than copper.

  • silver is highest conductor of electricity and thermal, silver costs much more thats why they use copper

  • my desodorant got silver particles in it :)

  • I CAN'T BELIEVE MY EYES!? NEIL IS EATING SOMETHING WHILE IN THE CHEMISTRY LAB? that is forbidden!

    4:29

  • Man I love your videos, they're just so fascinating, great job.

  • how much was that camera and what model is it?

  • 8:36 - 8:42. Most awesome thing ever.

  • I do this reaction as a display for college open days, but under a microscope you can see the crystals forming. its great.

  • @nabnabking: Sounds nice... We might try that next time!

  • awesome :)

  • What are the odds? I was just a couple of hours before this appeared in my subscriptions box thinking that I should someday check out the silver video.

  • Tsk Tsk Tsk Neil working in a chemical laboratory and chewing, naughty!

  • Would have been nice to see the timelapse of the displacement reaction, but otherwise a fantastic video as usual. I had no idea Silver was involved in enrichment. :P

  • Are the silver crystals stable? As in would they not fall off when you take the copper out of the water?

  • They are stable, until you give the copper wire a very good shake or scrape the silver metal off.

  • How about the silver metal that actually touches the copper metal. Is the silver participating in metal bonding with the copper?

  • metals don't bond with each other, except for alloys. That's why even though silver stuck to the copper wire, you don't see any reactions like heat, lights, or whatnot occuring between the silver and copper.

  • One question I've always had is: if all the heavier elements on Earth were created in a supernova, why are there "veins" of silver, gold, copper, etc? Shouldn't the atoms be spread out fairly evenly? Where did entire solid rocks of these elements come from?

  • Supernovas go boom, releasing lots of gases and other elements, etc. This" dust" eventually comes together as smaller particles are attracted to larger ones due to gravity. They form spheres, spheres begin to spin, they get nice and hot, the crust cools and you get a planet.

    Those veins are due to uneven cooling of the crust and. Molten gold or silver coagulates underneath the surface of earth and eventually pops out of the earth's surfaces.

  • That doesn't explain why the silver particles are all clumped together and not distributed in a statistical even way.

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  • Yeah, none of that answers my question. A single chunk of gold/copper/silver is statistically impossible if all the heavier elements are made in a supernova and randomly spread all over the place. Thanks for trying, though. Next time I want a bunch of random information on a topic I'll look at Wikipedia.

  • Just to add to Keimori's explanation, you need stars to go boom if you want a planet to consist of anything other than hydrogen and helium (in any significant amounts atleast). It's just that it takes a supernova to create the elements that are heavier than iron.

    Novas just provide the building blocks for planets, but don't affect the formation directly, nor how the matter is distriputed within a planet.

    Wikipedia has an entry for 'ore genesis', but sadly it isn't a very light read.

  • Statistically, it is impossible. But this is reality, and there is a very large difference between your statistics and reality. I gave an explanation in chemical and mining terms for each of the elements you mentioned. If it did not please your standards then I'm sorry. If you really truly were curious, then you could have easily found your answer on wikipedia, which would've been what I explained, only, with many more big words.

  • ah, that for earth wasn't crated in a supernova, it gathered together in an a reaction over many hear in what was basically a big game of galactic pinball were meteors smacked into each other, and the smashed together they got bigger, and the matter got smashed and mixed together, like in a stew, but also like a stew, while they mixed, chunks still stuck together and wound up in different places, some settled at the core, some melted and stewed around in the mantle, and others cooled,

  • and got scattered, then after years and years of the cust contorting itself, the chunks have spread out in vains, as PeachandCream mentioned, by uneven cooling of the crust.

  • i think it displaces the other elements as they go down the group

  • Flash powder? Hmmmm. And all the other expIosive mixtures? I think you guys would really like to be on either Mythbusters or Braniac. You've probably got a wider viewership here tho.

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  • Awesome!

  • the time lapse was awesome! XD great video!

  • Very good videos. Thank you guys.

  • awesome vid guys

  • There are people imbibing this stuff. Do a Google image search for "colloidal silver blue man" to see the surprising effect to their skin.

  • My socks have silver in them... (they didn't cost more so why not buy them?).

  • We will be sorry when the bacterias become resistent to nano silver

  • @skinnyjohnsen I am not aware of any important dependency of ours on silvers effects against bacteria, so if they do become resistent, no one is going to get hurt.

    Im not sure HOW silver effects bacteria, Im just a layman, but it could very well be that in order for them to survive, they would have to toughen up unnaturally much. Like a human becoming resistent to fire.

    Just speculating, though. But since they're not resistent yet, after all this time, it has got to be pretty nasty for them.

  • Maybe the human/fire-comparison was bad, I dont know.

    Hopefully someone educated in this can correct me, for both our sakes.

  • keep on coming out with videos, these are all great

    as well sixtysymbols is equally great.

  • that is beautiful 8:37.

    love your videos :D thank you

  • Badass professor

  • which one?

  • The white poofy afro

  • Hey no eating in the lab ;)

  • SWeeeeeeeeeeeeet!!!!!! Hahaha That's Why Silver Tops on my favorite Elements! :D

    Great Video!

  • Would this be a good way to silver plate something?

  • I don't know much about science and stuff. But It doesn't look like that would be a good way because it is all crystalized and I think if you wanted to touch the object it would just crumble.

  • I hope after a few years of periodic videos I get an honorary "o" level in basic chem.

    The time lapse was much appreciated.

  • the electrical plugs are so different from the american ones...

  • I love these videos... interesting :D

    keep up the good work guy, loving it...

  • Thanks :D!. Amazing

  • That's really cool.

  • "no items may be placed in this fumehood without permission..." What's that about?

  • Maybe they just want the area clear... does it really matter though?

  • Wow! Flash powder lives up to its name. I also like the copper wire with its 'hair' growth.

  • buy it before there is none left swap the fiat paper for something before its too late :)

  • Copper won because of its higher electronegativity, correct?

  • No, copper is metallically bonded, not covalently. Copper 'won' for a variety of reasons. If my AS chemistry serves me correctly, the atomic radius may be smaller, copper may have more protons (greater positive charge) and so displaces the other chemical

  • You made very expensive rock candy! :)

    This is definitely one of y'all's better videos. Great job! Educational yet huge fun. (Pete certainly was a hoot and a half in this one.)

    I liked the variety of information and experimentation in this one. This is a high quality 9 min. 24 sec.

    The Professor's historical tidbits really do add texture to the science.

    And, yeah! for Brady having a new toy! :)

    Seriously, wonderful, wonderful job on this one. Well done!

  • So, now we need to know: Is there a way to retrieve precious metals from seawater through an electrochemical-plating-type process? Even if it's inefficient...

  • if you do that the water will be contaminated cause you will me taking alot of minerals. you knoe fishes live using those minerals.. :) it may work but think about the consequenxes.. :)

  • I don't think that's a very well thought out criticism. As far as I know, no animal or plant life depends on gold, silver or platinum.

  • as you heard silver has anti bacterial effect some elements like silver and gold are important part of nature take alot of them away from its nature and you'll see what could happen.. water would get easily infested with bacteria although sponges could eat or filter small bacteria its still not enough

    its not about the animal or the plant its about the habitat and nature in general. ps i miss read your stuff i though you were planning to create a plantation that sucks silver out of sea-water

  • You could learn a lot just by learning that you have no idea what you're talking about, edrianquintos.

  • Ag. my favorite element :)

  • nerd :)

  • umm... Thanks?

  • I read that people used to put a silver coin in milk to stop it going off(perhaps before refrigeration).

    I wonder if you could have started a fire if you put some paper by the flash powder,then adding the water.

  • I recall reading that silver was used as a detector for some poisons in the Middle Ages and the Renaissance . was that an old wives tale ?

  • wait, so u can actually make silver? imagine the money.

  • Why does copper "win" in the reaction? Is it because copper nitrate has a higher equilibrium constant than silver nitrate? Differences in solubility?

  • the copper nitrate compound is more stable.

  • Cu can displace Ag better. Look at where each of them are on the periodic table.

  • Ok, but why is that? Why are elements higher in the group "more stable" than lower elements(assuming this holds true for other elements)? I want to know what exact property is at work here.

  • You got it backwards Sliver is less reactive than Copper. All atoms want a full shell of electrons. They can either give them away or take them. Coppers valance electrons (the outside electrons) are closer so it's more reactive and wants to give it's electrons away to become more stable. Sliver has one more shell of electrons, so it's valance electrons are further away from the nucleus making it less reactive. I know this may appear to be jargon to you so reply if your confused.

  • Actually I get what you're saying, I'm a chem undergraduate, just trying to get down to the nitty gritty. :)

    If silver's outer electrons orbit farther away from the nucleus than copper's(having a lower ionization energy, therefore more likely to lose electrons to an electroneg element), shouldn't silver be more likely to lose its 2 or 4 electrons to form a salt with NO3- than copper?

  • it is fantastic

  • aaaahhhhhh!

  • So much stuff onthe Professor's table...even puzzles..but no Rubik's Cubes...shame..

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