Arsenic - Periodic Table of Videos

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  • Опубліковано 22 гру 2024

КОМЕНТАРІ • 1,8 тис.

  • @ryanpenrod1859
    @ryanpenrod1859 5 років тому +2294

    "He always claimed he was innocent, but when he was arrested he had a packet of arsenic in his pocket."
    Smooth.

    • @80cardcolumn
      @80cardcolumn 5 років тому +83

      He claimed "That's not mine."

    • @alphonsokurukuchu
      @alphonsokurukuchu 5 років тому +29

      someone is framing me!

    • @Lightning_Lance
      @Lightning_Lance 5 років тому +46

      That seems a bit too lucky a find. He could well have been framed.

    • @GRBtutorials
      @GRBtutorials 5 років тому +27

      80cardcolumn And after they accused him of lying, he claimed: “I meant that it wasn’t mined, you just misunderstood... it was made through reaction of arsenic with nitric acid”.

    • @billsinkins361
      @billsinkins361 5 років тому +18

      "These aren't my trousers, copper!"

  • @The12hugo
    @The12hugo 5 років тому +3064

    “It tastes like sugar” I’m very sorry for the first man who discovered this lol

    • @Xirpzy
      @Xirpzy 5 років тому +333

      "I must say, your wallpaper tastes really sweet."

    • @shelbysteiner
      @shelbysteiner 5 років тому +119

      @@Xirpzy The schnozzberries taste like schnozzberries!

    • @choosefreedom4725
      @choosefreedom4725 4 роки тому +65

      How did that go down? "It tastes like sug..." dies*

    • @tommytallgren620
      @tommytallgren620 4 роки тому +142

      I feel sorry about the second man, he who did not belive the first man.

    • @raymondhoyland61
      @raymondhoyland61 4 роки тому +2

      @@Xirpzy me

  • @andrewchapman2039
    @andrewchapman2039 5 років тому +2420

    "I have two favourite stories about poisoning."
    I have no doubt that this man would be everyone's favourite chemistry teacher.

    • @mamupelu565
      @mamupelu565 5 років тому +46

      I could hear his stories all day

    • @strawbrryfld1
      @strawbrryfld1 4 роки тому +5

      Andrew Chapman Definitely !

    • @adamabele785
      @adamabele785 4 роки тому +20

      I had in a way a very similar chemistry teacher. He could tell endless stories about countless encounters with different substances, about guys that got mercure poisoning or explosions and things that went wrong. But for sure we learned more about the nature and dangers of substances from his stories than from any of the books. One of his favorite sayings was: I´ts chemistry when it bangs and stinks. He was a scientist as well and had a degree.

    • @pd6556
      @pd6556 4 роки тому +4

      I just love chemistry. And this man is helping me in so many ways. He's my online chemistry teacher,I mean this channel.😁

    • @ThatBigBlackClock
      @ThatBigBlackClock 4 роки тому +15

      I have him for my "topics of inorganic chemistry" module and have to say he is very oldschool and doesnt believe in powerpoints, but leads very entertaining and interesting lectures haha

  • @FluppiLP
    @FluppiLP 5 років тому +846

    "I got bored and went out" - always the scientist :D

    • @mattlogue1300
      @mattlogue1300 4 роки тому +11

      Yep

    • @the_birthday_skeleton
      @the_birthday_skeleton 3 роки тому +11

      I cracked up so hard when he said that

    • @Masden-
      @Masden- 3 роки тому +6

      @@mattlogue1300 nice job adding nothing to say

    • @andrewbreding593
      @andrewbreding593 3 роки тому +9

      6:46 : "I was really excited 😆 I was allowed to chop up the zinc! 🥳" What a treasure

    • @nodical802
      @nodical802 3 роки тому +5

      @@Masden- nice job being a douche for no apparent reason

  • @Pablovru
    @Pablovru 5 років тому +1227

    "It was really exciting, I was allowed to chop out the Zinc"
    Oh that was heartwarming ❤️

    • @incorrectstuffthingy5647
      @incorrectstuffthingy5647 4 роки тому +100

      Protect this man at all cost.

    • @jeffersonborges9340
      @jeffersonborges9340 4 роки тому +77

      This part of the video actually broke my heart... The master really loved what he had done for his entire life... I wished I could hug him when I heard it

    • @fingmoron
      @fingmoron 4 роки тому +51

      Very adorable considering all the interesting experiments he's done he still loves the little things.

    • @kittehme3071
      @kittehme3071 3 роки тому +8

      I went back to watch that part 3 times

    • @heartz4dani800
      @heartz4dani800 3 роки тому +1

      @@kittehme3071 time stamp?

  • @vezzosetto
    @vezzosetto 5 років тому +263

    lead acetate paper used to be used to remove traces of H2S when quantifying arsine evolved in the Marsh test with mercuric chloride. Mercuric chloride is specific for arsine as long as there's no H2S present along with it. It's part of the arsenic detection kit but it doesn't detect arsenic itself!

    • @MM-wi4dt
      @MM-wi4dt 4 роки тому +12

      Such a lovely bunch of chemicals

    • @NinoNiemanThe1st
      @NinoNiemanThe1st 4 роки тому +9

      Thanks desange, great explanation. A shame so many of these chemicals are so toxic...still can't go up against a Marsh Test when it comes to illicit (or licit) consumpton of chemicals like As, and the colors you often get after the reaction are endlessly fascinating.

    • @mikeharris1002
      @mikeharris1002 4 роки тому +10

      That kind of ties up with my memory of using mercuric chloride papers in a quantitative test in about 1968. Some dilute sulphuric acid and and a few zinc turnings were added to a solution of the material under test and the gas that was evolved passed over a mercuric chloride paper test strip. The test strip picked up a brown stain from the gas with an intensity that was related to the concentration of arsenic in the solution under test. This was determined by comparing the stain with an incremental set of standard stains prepared under the same conditions.

    • @markusfaller1333
      @markusfaller1333 4 роки тому +8

      The test with mercuric chloride is called Gutzeit test and for that test you should fist trap hydrogen sulphide H2S out of the gas stream which contains the arsine AsH3. Normally you use a cotton ball dipped into lead acetate but it seams that you can use the lead paper instead. Nice to see how ancient chemist alleady knew so much about the chemical reactions.

    • @speedslayerr
      @speedslayerr 4 роки тому

      Fascinating stuff!!!

  • @Jackismycopilot
    @Jackismycopilot 5 років тому +3322

    "People used it to get rid of their lovers, their wives, or just AWKWARD PEOPLE." hahahahaha

    • @dizzze
      @dizzze 5 років тому +138

      I prefer "i've got 2 stories about poisoning, BOTH OF THEM ARE TRUE"

    • @tayet6875
      @tayet6875 5 років тому +41

      JackIsMyCopilot
      *laughs awkwardly *
      Oh no!

    • @whateverppl1229
      @whateverppl1229 5 років тому +149

      "you seem awkward, would you like some sugar?"

    • @williamsquires3070
      @williamsquires3070 5 років тому +26

      dizzzer adventure - it’s probably to the benefit of “awkward people” that forensic science has caught up, or there’d be a lot fewer of us!

    • @otakuribo
      @otakuribo 5 років тому +40

      **feels personally threatened*

  • @KdetJim
    @KdetJim 5 років тому +703

    14:32 “everything else was distributed around the lab”
    Probably the most low-key way to describe an explosion. 😂
    “You blew up the lab!!”
    “No. I just distributed the apparatus around the lab”

    • @sakkek5349
      @sakkek5349 4 роки тому +1

      Cos why make it such a big number, cos its already happened. And shouting about it , wont change a thing..😊. Short of clever way to make things straight.

    • @TheSonicWafflez
      @TheSonicWafflez 4 роки тому +27

      Sounds like a line from a Douglas Adams book. "The experiment decided to suddenly and violently distribute itself around the lab" XD

    • @dmka12
      @dmka12 4 роки тому +4

      Elon Musk would refer to it as a RUD - Rapid Unscheduled Disassembly

    • @VintageTechFan
      @VintageTechFan 4 роки тому +4

      "I moved our experiment into the Cloud."

    • @mattlogue1300
      @mattlogue1300 4 роки тому +6

      What happened to chemist? Was he likewise finely distributed amongst the lab?

  • @abdullahkilinc473
    @abdullahkilinc473 5 років тому +766

    "Neil`s Brown Sludge" name of my rock band

    • @inhumanfilth681
      @inhumanfilth681 5 років тому +18

      Sounds more like punk lol

    • @feyk9638
      @feyk9638 5 років тому +3

      Sounds like he's been a bit sick lately

    • @es8559
      @es8559 5 років тому +2

      Dia Rhea Rama

    • @kylebaker1220
      @kylebaker1220 5 років тому +1

      My NickName in Highschool.

    • @mhyotyni
      @mhyotyni 5 років тому +2

      Sounds like a hillbilly moonshine to me 🍸

  • @kanata_harumi
    @kanata_harumi 5 років тому +387

    "We didn't have a sample of this so we decided to have Neil made some for us."
    Neil as always doing the hard work. Kudos to him.
    also, talk about making poison...

    • @nevim007
      @nevim007 4 роки тому +13

      Neil looks like he eats arsenic for breakfast

    • @estelja
      @estelja 2 роки тому +4

      Neil is not someone you would want to leave alone in your garage.

  • @BobWidlefish
    @BobWidlefish 5 років тому +1511

    “Liquid fluorine” yeah that sounds safe.

    • @ThisIsTaco1
      @ThisIsTaco1 5 років тому +204

      I love how he uses that story to explain violent reactions of Arsenic, when all flourine knows are violent reactions

    • @BobWidlefish
      @BobWidlefish 5 років тому +83

      *@ThisIsTaco1* just keep it under liquid nitrogen and it’s perfectly safe, what could possibly go wrong? Oh right, it could explode.

    • @theblackbaron4119
      @theblackbaron4119 5 років тому +2

      @@ThisIsTaco1 :') brilliant

    • @zapfanzapfan
      @zapfanzapfan 5 років тому +86

      An explosion of fluorine and arsenic... I wouldn't go near that lab...

    • @olbluelips
      @olbluelips 5 років тому +25

      Fluorine is amazing, the only thing it won’t form compounds with are Helium and Neon! :)

  • @logicplague
    @logicplague 4 роки тому +215

    "We were really hopeful we were going to get our white powder"
    You and me both, man.

  • @electronicsNmore
    @electronicsNmore 5 років тому +352

    One of the few channels that I watch the video all the way through. Great video!

    • @periodicvideos
      @periodicvideos  5 років тому +50

      Thank you!

    • @electronicsNmore
      @electronicsNmore 5 років тому +16

      @@periodicvideos You're welcome!

    • @januarioqueiroz3122
      @januarioqueiroz3122 4 роки тому +2

      Yes, it is!

    • @Avci__
      @Avci__ 2 роки тому

      @@periodicvideos He has a powder that contains iridium, osmium, rhodium, gold and arsenic. How do I get rid of arsenic? Can you help me?

  • @ic08jy700
    @ic08jy700 4 роки тому +12

    This guy is the archetypal college lecturer. He loves what he does and is excited by it and wants you to be too. I love the chemistry he goes into and think all of his element videos are little masterpieces. It is conceivable that they will be preserved and go down in history as THE descriptions of their age. I hope so.

  • @ile84
    @ile84 5 років тому +141

    "I got bored and went out" spoken like a true chemist :D
    I feel that way too, the impatience.

  • @jessserene5265
    @jessserene5265 5 років тому +58

    "I was so excited I got to chop up the zinc" I love it when people can get excited for the small things. It's a hard skill to learn, but it really makes life better lol

  • @beekeeperhoneymoon8179
    @beekeeperhoneymoon8179 5 років тому +1010

    "People used it to get rid of awkward people"
    Me:
    *looks around nervously*

  • @justl2609
    @justl2609 3 роки тому +5

    Even though I changed my profession from a biochemist student of second year to lawschool, I always find myself coming back to watch the professor and the staff explain chemistry to us, you can tell they are passionate for their field.
    Thank you professor for taking the time to shed light into the world of chemistry for everyone!

  • @MattLuceen
    @MattLuceen 5 років тому +515

    “I have two favorite stories about poisoning.”
    😂

    • @solarsombrero227
      @solarsombrero227 5 років тому

      Of course he does!

    • @theblackbaron4119
      @theblackbaron4119 5 років тому +12

      Man keels over in the background ... Three! I have three favourite stories about poisonings.

    • @robertr7923
      @robertr7923 5 років тому +1

      20 people were killed and over 200 ill. Yeah nice story bro

    • @alazrabed
      @alazrabed 4 роки тому +2

      This quote goes so well with you profile pic!

    • @kittykattzee
      @kittykattzee 4 роки тому

      Very relatable 😂

  • @mercster
    @mercster 4 роки тому +34

    "I got bored and went out." That's why we love you.

    • @UchihaFabio
      @UchihaFabio 7 місяців тому

      Just like when he exploded the amphitheatre

  • @talkingdot
    @talkingdot 5 років тому +260

    I really love these deep dive videos on Elements Brady

  • @ioneatlas6821
    @ioneatlas6821 3 роки тому +9

    tenho Phd em psicologia clinica e 68 anos de idade. comecei a estudar quimica e descobri voces. amo de paixão e agradeço todo seu trabalho.

  • @madLphnt
    @madLphnt 5 років тому +306

    "Sweet maker named John Neil, sent his lodger to get some daft for his next batch of sweets." Thats the most British sentence i think i have ever heard. I love it.

    • @billynomates920
      @billynomates920 2 роки тому +6

      perhaps he was the origin of the expression never trust a man with two first names?

  • @jbezuidenhout46
    @jbezuidenhout46 4 роки тому +50

    Professor after anything taking longer than 10 seconds: “ IGHT IMMA HEAD OUT “

  • @in.articulo.mortis
    @in.articulo.mortis 5 років тому +150

    You didn't mention my favourite arsenic compound, C4H4AsH, also known as Arsole.

    • @yubach
      @yubach 3 роки тому +3

      Mine is AsH3 "Arsine" just google its toxicity

    • @Slippergypsy
      @Slippergypsy 3 роки тому +2

      fitting.. anyone who would say "cah-hash" is probably an asshole

    • @anothercitizen5233
      @anothercitizen5233 3 роки тому +6

      I scrolled down to the comment section because I was looking for comment like that. I knew it.

    • @robertwilloughby8050
      @robertwilloughby8050 5 місяців тому +1

      And remember that Arsoles are only moderately aromatic....

  • @aquamanGR
    @aquamanGR 2 роки тому +3

    I love this channel. And I love the dedication of these two guys, that are obviously in love with the subject. Sir Martyn and Neil, I only knew basic college chemistry, but your enthusiasm is infectious and I am so glad to have discovered this series - I have learned so much, thank you.

  • @tomkandy
    @tomkandy 5 років тому +252

    The reaction of Arsenic with liquid Fluorine? Blimey, that sounds like one for "Things I won't work with"

    • @slidey1000
      @slidey1000 5 років тому +7

      But sodium and chlorine are both dangerous yet combine to make something edible.
      What could go wrong?

    • @tocsa120ls
      @tocsa120ls 5 років тому +2

      and we have the obligatory lab equipment that was accelerated though the roof :)

    • @gamingmarcus
      @gamingmarcus 5 років тому +5

      Back in the cold war they tested every possible compound for use in rocket fuels.
      One of those engines used liquid Lithium, liquid Fluorine and Hydrogen as fuel. Can you imagine that?

    • @MrShadowmaster00
      @MrShadowmaster00 5 років тому +3

      @@gamingmarcus sidenote: the reaction was between the lithium and the fluorine, while the hydrogen would get added later in the combustion chamber (so it didn't really react much). Basically, the only reason the hydrogen is there is to increase performance (because a lower molar mass propellant increases the specific impulse of the engine).

    • @YCbCr
      @YCbCr 5 років тому +3

      @@gamingmarcus Sounds like we've got Ignition! :) Fun read!
      On the note of Things I Won't Work With: Derek Lowe has got some on his blog, a bit of googling will bring it right up.

  • @zachdurocher1166
    @zachdurocher1166 5 років тому +55

    How to start a conversation:
    "So my two favourite stories about poisoning..."

  • @john_hunter_
    @john_hunter_ 5 років тому +182

    16:52 I like how they just film him looking at things and then walking away.

  • @cancel1913
    @cancel1913 4 роки тому +5

    Your videos are so comforting to watch. I really enjoy the information and your demeanor.

  • @jhyland87
    @jhyland87 5 років тому +44

    I love these longer versions of your videos. Thanks Brady!

  • @robfelt9283
    @robfelt9283 2 роки тому +1

    Such wonderfulness. I am 67 and a newcomer to the Hall chemistry/periodic table/etc. etc. I share this with my granddaughter who is attending university North Carolina Chapel Hill and my other granddaughter who will be 16 and still in high school. They think I’m weird and I love it.

  • @inhumanfilth681
    @inhumanfilth681 5 років тому +855

    "We were really hopefull we would get our white powder"
    Been there bro, been there.....

    • @theblackbaron4119
      @theblackbaron4119 5 років тому +54

      Baking is an amazing hobby, isn't it ;)

    • @cuber9320
      @cuber9320 5 років тому +14

      You beat me to it. 2 hours late

    • @artistanthony1007
      @artistanthony1007 5 років тому +7

      @@theblackbaron4119 It's basically like a fancy sugar, expensive and addicting at the same time.

    • @theblackbaron4119
      @theblackbaron4119 5 років тому +8

      @@artistanthony1007 Arsenic is forbidden sugar :) well, lead has also been used as a sugar substitute.

    • @russell_szabados
      @russell_szabados 5 років тому +1

      LOL!

  • @edoardobracciotti9594
    @edoardobracciotti9594 5 років тому +6

    To use those lead papers you have to reduce As to arsine (as you did with zinc in acid). Then the arsine gas passing through the humidified paper can reduce Pb(II) to lead metal, wich makes the paper black. I used it in our qualitative analysis lab in Pisa. Thank you for your videos I always apriciate them a lot!! :)

  • @verdatum
    @verdatum 5 років тому +21

    I need so many more updated elements videos. Thank you for continuing to update this series!

  • @joeywilburn8672
    @joeywilburn8672 4 роки тому +12

    These are the realest chemistry videos on YT, they show the success and failures.

  • @Gandoff2000
    @Gandoff2000 5 років тому +49

    I think this guy is so cool how he makes chemistry even more interesting. Neal doesn't say much but yeah, he's cool too! I'm a fan.

    • @H34L5
      @H34L5 3 роки тому +2

      i've been subscribed for years and i have no idea what Neal's voice sounds like

    • @FrozenHaxor
      @FrozenHaxor 3 роки тому +2

      Neil*

    • @Gandoff2000
      @Gandoff2000 3 роки тому +1

      @@FrozenHaxor Of course. Thank you.

    • @shawnmendrek3544
      @shawnmendrek3544 Рік тому

      yes

    • @mr.iforgot3062
      @mr.iforgot3062 Рік тому +1

      Neil is a drunkard and is barely hanging on to his job. He is court ordered to attend 2 AA meetings a week. And sustain from booze. Sustain means "do without"

  • @DoiInthanon1897
    @DoiInthanon1897 3 роки тому +2

    I was really interested by this video on Arsenic and the stories behind its use in poison. Thanks Periodic Videos! You guys are still going after 12 years doing the subject you love, really impressive!

  • @scotts918
    @scotts918 5 років тому +23

    I could listen to this man tell stories for hours.

  • @mikeDeSales943
    @mikeDeSales943 4 роки тому

    I have been watching these videos for over 5 years now. I am so thankful for everyone who puts these together.

  • @ButzPunk
    @ButzPunk 5 років тому +674

    "A town in the west of England"
    *Map zooms in on Wales*
    ಠ_ಠ

    • @edwardvarney432
      @edwardvarney432 5 років тому +30

      Ben Rowe I know that made me really angry being a welsh boy myself

    • @harrywood6502
      @harrywood6502 5 років тому +84

      The Welsh-English border litterally goes through Hay-on-Wye so it's not awaful to say it's West England, some of it is.

    • @slandgsmith
      @slandgsmith 5 років тому +18

      Ben Rowe A town in the East of Wales

    • @trickyricky2903
      @trickyricky2903 5 років тому +7

      Also had to check this! The point on the map looked to be in Wales.

    • @theblackbaron4119
      @theblackbaron4119 5 років тому +30

      @@edwardvarney432 Say boy... Do you like sheep ?

  • @PatrickBateman191
    @PatrickBateman191 3 роки тому +1

    This man is really interesting to watch. I never get tired of his videos.

  • @validefy
    @validefy 5 років тому +29

    Love these videos. One of The best channels on UA-cam. Ill be waiting for the next one

  • @sweetwillow028_
    @sweetwillow028_ 3 роки тому +1

    I got introduced to this channel by my chemistry professor 👩‍🏫 and I’m
    hooked now. I do see the chemistry in daily life or probably in everything this universe, such amazing thing.

  • @ThisIsTaco1
    @ThisIsTaco1 5 років тому +83

    14:35 "Arsenic (...) can react very violently"
    Well, I mean, almost anything reacts violently with *liquid flourine*

    • @zapfanzapfan
      @zapfanzapfan 5 років тому +10

      Arsenic and liquid fluorine, sounds like a mad experiment to get a new more potent rocket fuel...

    • @fandyus4125
      @fandyus4125 4 роки тому +8

      Cesium and liquid fluorine when?

    • @harryw.174
      @harryw.174 4 роки тому +3

      @@fandyus4125 sounds like something a super villain would use

    • @ElementalAer
      @ElementalAer 4 роки тому +3

      @@fandyus4125 with this thing, you are just signing a letter to death

  • @jhyland87
    @jhyland87 4 роки тому +1

    at 6:32, in the last sentence on that page shown in the book, it says:
    *Charge the... funnel B with quite dilute sulphuric acid, **_I•oN_** or less...*
    What is the _I•oN_ supposed to represent? Is that a

  • @riverbender9898
    @riverbender9898 5 років тому +11

    Though I'm even a bit older than you Professor, your videos always take me back to my early love of science, particularly Chemistry. Thank you.

  • @leokimvideo
    @leokimvideo 3 роки тому +7

    The death element, amazing

  • @Bog2901
    @Bog2901 5 років тому +159

    "we didn't have any of this poison on hand so we decided to just make some"

  • @connieembury1
    @connieembury1 5 років тому +3

    Can you do an updated video on Molybdenum please? I really enjoy your videos and love it when you update the elements with more info. I loved chemistry in High School (Canada) and the professor reminds me of our chemistry teacher

  • @Marchpaneforce
    @Marchpaneforce 5 років тому +12

    Biology student from Cologne here. Never thought, I'd see a video of the professor in front of Albertus Magnus! Really wish, I had known about your visit, so I could have listened to the lecture in person. Thank you for the great video! :D

  • @airpolygon2714
    @airpolygon2714 5 років тому

    I absolutely love periodic videos! With all of the entertaining and illuminating experiments, anecdotes and explanations. I've been following you for quite some years now, and you never cease to amaze me with your content!

  • @RonLauzon
    @RonLauzon 5 років тому +21

    When I was in college (Michigan Technological University), I used to collect interesting mineral samples - which was easy to do in that area since it was a big mining region. I was able to pick up a small nugget of kearsargeite (copper, nickle, arsenic). It was called "kearsargeite" because it was found near Kearsarge, MI. I was told that during WWII, kearsargeite was collected for Special Forces use to make bullets.

    • @uberawsome3696
      @uberawsome3696 4 роки тому +1

      I cannot find any proof for that last point. I also looked under pumpellyite.

  • @Majorweck
    @Majorweck 5 років тому

    I need to say:
    I love it, how much this channel improved by itself...
    It got more professional and still has it's little cute parts.
    I learn something about different things and can enjoy it.
    Please: Keep this work up! I don't want to miss it...

  • @jeremyalbert3969
    @jeremyalbert3969 5 років тому +9

    I love this man. His voice is so calming and he educates me so much. His stories are interesting it shows he has a great past.

  • @hrtlsbstrd
    @hrtlsbstrd 5 років тому +7

    I love that his idea of a fun video is him silently paying respects at a bishop’s remains

  • @ReenosLP
    @ReenosLP 5 років тому +11

    16:47 I was there and listened to your lecture. That was one of the best days I had in University so far!

  • @DeadAlcoholZombie
    @DeadAlcoholZombie 4 роки тому +4

    What. A. Gem this man is.

  • @johnsmith-sp6yl
    @johnsmith-sp6yl 5 років тому +7

    been watching these videos intermittently since i was about 6 years old, now i'm studying chem in uni. this is what got me interested in chemistry; a bunch of good, clean fun with deadly poison.
    the videos on the alkali metals were very intriguing, too.

  • @marcel_max
    @marcel_max 4 роки тому

    Hey, welcome back. So happy to see that the video list added this new one. Wish you well.

  • @ferdisb4070
    @ferdisb4070 5 років тому +205

    "And then you add the thing you think contains Arsenic, in our case Arsenic" :D

  • @farhanahmed2508
    @farhanahmed2508 5 років тому +154

    1:12 "Or just awkward people."
    *Gasps awkwardly*

    • @smaakjeks
      @smaakjeks 5 років тому +4

      We've found one!!

    • @psygn0sis
      @psygn0sis 5 років тому +4

      Gotta love people that copy, for the hundredth time, what others have said,

    • @user-ge4uk9ui8y
      @user-ge4uk9ui8y 5 років тому

      rip me

    • @ValentineC137
      @ValentineC137 5 років тому +7

      @@psygn0sis almost like multiple people can get the same obvious idea, without having to copy eachother..

    • @CJT3X
      @CJT3X 5 років тому

      Valentine or... without reading the previous comments

  • @gracechen2412
    @gracechen2412 3 роки тому +1

    Love the new version! Connecting to historical events are fantastic!

  • @scotts918
    @scotts918 5 років тому +27

    17:46 - Trying to decide if he should touch the high thumb, or the low thumb...

    • @A-Ls1
      @A-Ls1 5 років тому +4

      Scott S I was thinking about that

    • @youlovemyyoutubname
      @youlovemyyoutubname 5 років тому +2

      Yeah haha, all the students definitely know which thumb to touch.

    • @skakdosmer
      @skakdosmer 4 роки тому +1

      ...and it definitely would be the high thumb.

    • @dylanb4539
      @dylanb4539 4 роки тому

      My eyes went to the high thumb😂

  • @lhaviland8602
    @lhaviland8602 4 роки тому +43

    "In the west of England"
    Map shows that the town is clearly in Wales.

    • @northcode_
      @northcode_ 3 роки тому +7

      Surprisingly it's actually right on the border (according to Google maps).
      But most of it is indeed on the Wales side.

  • @TheCampnFool
    @TheCampnFool 5 років тому +4

    In college I took a chemistry class out of sheer curiosity.
    I absolutely despised that class.
    Next semester I took Intro to Computer Science and found my path,
    However, I find your videos quite fascinating.
    I wish my old Chemistry Professor had possessed your enthusiasm for the science.
    Now, here I am at 60 years old reading an old Introduction to Chemistry text book.
    Now see what you've done!? Lol
    Teaching old dogs new tricks.

  • @MegaBoilermaker
    @MegaBoilermaker 4 роки тому +1

    Arsenic was mined down here in West Devon and Cornwall. A few of the old Mine engine house chimneys were adapted as Arsenic condensers and there were also some ground level labyrinthine condensers. My elder brother was once contaminated with low level Arsenic intak and did not notice until his hair was showing a greenish tint under UV light.

  • @hydrusje
    @hydrusje 5 років тому +168

    "I was really excited I was allowed to cut up the zink" :D
    I know what to send the professor now for next christmas :p

    • @fish4225
      @fish4225 5 років тому +20

      I like to think the professor isn't allowed near sharp objects.

    • @wernerhiemer406
      @wernerhiemer406 5 років тому +12

      @@fish4225 I think they fear snippets to jump up and tangle into his hairstyle. Who then is supposed to get into that holly grail to sepperate that? Because it is not solid, not liquid, no magnetic particles involved. Burning down is no option. So you would have to wait until some of those strands pertisipitate off that fluffy structure holding supstrate (scalp) and then it makes ping sound by falling onto a hard surface as detector.

    • @CrazyNerdInventor
      @CrazyNerdInventor 5 років тому

      Zinc*

    • @thedanyesful
      @thedanyesful 5 років тому +1

      "Zinc is by far the best element."

    • @dsandoval9396
      @dsandoval9396 4 роки тому +1

      Lol! Yeah, that was funny but admittedly a little sad as well.

  • @BloodySeaGullsRoss
    @BloodySeaGullsRoss 5 років тому +8

    6:46 “I was really excited, I was allowed to chop up the zinc” I found that quite humorous

  • @Yora21
    @Yora21 5 років тому +293

    "an Australian chemist called Bruce"
    Of course.

    • @MrIggybo
      @MrIggybo 5 років тому +9

      Yora I'd have expected somebody called Gary

    • @slidey1000
      @slidey1000 5 років тому +13

      He's also in charge of the sheep dip

    • @epincion
      @epincion 5 років тому +5

      Yes that along with 'Sheila's Green' which is what I thought he said before I saw the correct spelling.

    • @ianturpin9180
      @ianturpin9180 5 років тому +2

      I used to know a Bruce in Sydney many years ago who supplied squidgy resin so I suppose you could call him a chemist.

    • @vhaarr
      @vhaarr 5 років тому +1

      Michael Baldwin, Bruce. Michael Baldwin, Bruce. Michael Baldwin, Bruce.

  • @sspinsider1482
    @sspinsider1482 4 роки тому +1

    A fan from India sir lots of love you are amazing sir great respect from the bottom of my heart, at such a age still you are working to spread knowledge

  • @Mistakeful_Learning
    @Mistakeful_Learning 5 років тому +14

    I really enjoy the history part of these videos. They are very interesting and I learn something new with each one. Thank you for making them.

  • @VineetDwivediChemistry
    @VineetDwivediChemistry 4 роки тому

    Man I love ur voice and your calmness during explaning things. Although because of historical reason I dont like England but prof I respect & Love you alot.

  • @goranaxelsson1409
    @goranaxelsson1409 5 років тому +10

    A wonderful video!
    Arsenic is one of my favorite elements, maybe because I have found a 6.8 kg specimen that sits on the bottom shelf in my mineral collection. Arsenic is indeed metallic white when fresh, but turns brown to black on the surface over time. And when it sits on the mine dump a couple of years it gets a crust of white powder which makes it possible to spot it from meters away on small pebbles.
    A friend and I went to that mine (Storliden in Sweden) several times a year when it was active so I got somewhere around 50-100 kg of mineral specimens of arsenic. :-D Yummy!

  • @MegaBoilermaker
    @MegaBoilermaker 4 роки тому +1

    This element was mined in Cornwall alongside Tin and Silver. If you spot an extra tall derelict mine engine house chimney in Devon/ Cornwall then it was probably an Arsenic condenser, there were also ground level condensers.

  • @shearerslegs
    @shearerslegs 5 років тому +11

    Thanks for the video I love it when an alert pops up saying that you have a new one out

    • @periodicvideos
      @periodicvideos  5 років тому +11

      We love people who have alerts on for us!!!
      Bash that bell.

    • @BattleBunny1979
      @BattleBunny1979 5 років тому +1

      @@periodicvideos *ding*!

  • @vittoriosandoni7064
    @vittoriosandoni7064 Рік тому +1

    16:22 I think lead acetate paper only works on sufides, creating black lead sulfide, since your sample didn't contain sulfides, it didn't work.

  • @HarmonyHaven44
    @HarmonyHaven44 5 років тому +80

    you should heat the paper around 90C` then add solution (concentrated solution, less water)

    • @kaanylmaz4080
      @kaanylmaz4080 4 роки тому +1

      allow me to learn more of your ways esteemed sir

  • @lukasausen
    @lukasausen 3 роки тому +2

    17:40, this man will never be old, he just started hes chemistry career with the best of luck, wonder if hes going to be a famous chemist when he gets old.

  • @melskunk
    @melskunk 5 років тому +10

    I was excited to see Realgar, perhaps my favourite arsenic compound, so pretty and fascinating!

  • @migsvensurfing6310
    @migsvensurfing6310 4 роки тому +1

    Loved it. The knowledge and humor put in this video. Thanks.

  • @jc441-i3q
    @jc441-i3q 5 років тому +45

    Neil is the Mike Ermentraut of Periodic Videos

  • @collinsfriend1
    @collinsfriend1 2 роки тому

    I can see why your students remain loyal and connected to you. Great instructor and all around person.

  • @Commandmanhardcore
    @Commandmanhardcore 5 років тому +7

    Great content! I love how the channel has evolved over the years. Keep it up!

  • @rowenhusky
    @rowenhusky 4 роки тому +1

    2 notes from Hach's method that might help with the lead test paper, though this is from a different testing method, one mentions lead acetate.:
    1) This test paper allows the easy detection of arsine (AsH3) in the gas phase. Arsenic in solutions has to be converted into AsH3 with Zn/acid and purged from the solution. The arsine is detected directly at the boundary layer between water and air.
    Arsenic test paper is used for the easy determination of arsenic in grape must and wine. For the determination of arsine in compartment air the test paper is moistened with acetic anhydride.
    2) Unfortunately, during the reduction of arsenic to arsine gas, sulfides are also reduced to form hydrogen sulfide (H2S). Hydrogen sulfide reacts with the mercuric bromide test paper in the same way as the arsine gas, causing an interference. Current methods for removing sulfide interference entail passing the arsine gas stream through a scrubber to remove the hydrogen sulfide. These scrubbers are usually made of cotton that has been soaked in lead acetate solution (zinc and copper have also been used but have been found to be less efficient). The sulfide reacts with the lead on the cotton to form solid lead sulfide, thereby removing it from the arsine gas stream.

  • @marhar2
    @marhar2 5 років тому +74

    "Neal found an old Arsenic sample from the basement stores" -- that sounds like the beginning of an Agatha Christie novel!

  • @Bloodfang152
    @Bloodfang152 3 роки тому

    I hated chemistry in high school but I binge watch your videos. It goes to show you that everything is interesting but how its explained to you could be the reason why you do or dont like something

  • @QuasistellarNymphomaniac
    @QuasistellarNymphomaniac 5 років тому +145

    I dont think you can blame the arsenic for the explosion when you react it with fluorine :D

    • @periodicvideos
      @periodicvideos  5 років тому +94

      True - I think the Fluorine was probably. the main offender.

    • @dhavalbhalara1664
      @dhavalbhalara1664 5 років тому

      Looking for same comments..

    • @mamupelu565
      @mamupelu565 5 років тому +2

      @@periodicvideos main offender... lol

    • @skakdosmer
      @skakdosmer 4 роки тому +1

      @@periodicvideos What happened to the chemist? Was he “distributed round the lab” as well?

    • @jamesjacocks6221
      @jamesjacocks6221 4 роки тому +2

      @@skakdosmer He was distributed to a cab and driven home so the authorities wouldn't know what happened.

  • @velocirapture89
    @velocirapture89 Рік тому +1

    Please discuss also the chemistry of Old Lace.

  • @swebigmac100
    @swebigmac100 5 років тому +8

    Amazing video. Nice to see the professor in great spirit.

  • @mazirian9261
    @mazirian9261 4 роки тому

    Sir Martyn Poliakoff is such an amazing person! I love his level of study, and also his unique mannerisms (like enjoying cutting the zinc!).

  • @jeffzzzz1955
    @jeffzzzz1955 5 років тому +14

    I love these videos so much
    They're always very interesting

  • @martinfranke9766
    @martinfranke9766 5 років тому

    Interesting video. Always nice to see demonstrations of actual experiments. And listening to the historical anecdotes is fun, too.

  • @theprogrammer32
    @theprogrammer32 5 років тому +255

    "and I used to use it when teaching about Arsenic chemistry"
    "used to"
    you just did

    • @scottycatman
      @scottycatman 5 років тому +33

      But he used to, too.

    • @OldSchooledTV
      @OldSchooledTV 5 років тому +2

      @@scottycatman Underrated Mitch Hedberg comment

    • @bellicose4653
      @bellicose4653 5 років тому +1

      He still does, but he used to, too

  • @incription
    @incription 5 років тому +25

    2:19 when the dealer is 5 minutes late

  • @benial870
    @benial870 5 років тому +36

    "We didn't have any deadly well known poison, so we made some!"

  • @antoniomaglione4101
    @antoniomaglione4101 4 роки тому

    Thank you for another very informative video.
    The Professor is an overflowing source of knowledge as usual...

  • @leegami3234
    @leegami3234 5 років тому +25

    "I was really exited! I was able to chop out the zinc!"
    Trembling of excitement, making dramatic cuts...

  • @hmbpnz
    @hmbpnz 4 роки тому

    I keep forgetting to upvote every single one of your brilliant videos that I watch.

  • @victor9sur768
    @victor9sur768 5 років тому +13

    But what about Arsole? The most important organo arsenic compound

    • @venyeet5021
      @venyeet5021 5 років тому +2

      The Brown Sludge 😂

    • @remalm3670
      @remalm3670 5 років тому

      ... or the 93rd Gender Identity 😉...

    • @alexpotts6520
      @alexpotts6520 5 років тому +2

      As Wikipedia used to put it, "recent research suggests that arsoles are faintly aromatic".

    • @remalm3670
      @remalm3670 5 років тому

      @@alexpotts6520 ... Aren't they all😉...