Chemical Curiosities: Surprising Science and Dramatic Demonstrations - with Chris Bishop

Professor Chris Bishop, presenter of the 2008 Royal Institution Christmas Lectures, leads us through a spectacular tour of the curious, and sometimes surprising, world of chemistry.
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[@Roedygr]

The degree of preparation is astounding. Every demonstration rolls off like clockwork. It is designed for all ages. It is not condescending. Very well done.

[@eddygalperin2657]

no

[@eddygalperin2657]

bad roedy

[@mosesnjau1619]

Have you also noted that they don't consult or hesitate

[@88_TROUBLE_88]

@catothewiser I'm going to assume he knows what he's doing

[@88_TROUBLE_88]

@catothewiser Perhaps you're correct.. Time will tell..

[@camielkotte]

40 years ago these video would probably have changed my path and career. Science is there and it's free. Just consume it. What a world's change in a few decades.

[@terryofford4977]

Science and chemistry kept me employed for a large number of years, I retired many years ago and looking back, was glad I took Chemistry and Sciences at school, watching this,amazing lecture should intrigue and lead young students to the sciences.

[@user-lq7xg2yt6g]

40 years ago these video would probably have changed my path and career. Science is there and it's free. Just consume it. What a world's change in a few decades.

[@guyteigh3375]

Superb, I think these lectures should be shown to children BEFORE they start formal chemistry lessons to make them WANT to learn. Excellent presentation and in a way that makes it easy for people to understand and enjoy.

[@uppercut2246]

Should that be offered to Children, in the Servile or Liberal Arts format. You leave your indoctrination centres a Parrot & no more. You leave University a smarter parrot, with a debt ridden piece of paper, that is waved under the noses of your future Slave owners.

[@juicecup2545]

@@uppercut2246 -he said FOUR YEARS after the comment was posted.

[@Sybaris_Rex]

@@juicecup2545 And that's besides that these demonstrations are obviously meant to inspire children to learn and question the world around them rather than parrot o[r] be slaves to some machine. I feel sorry for people whose lives have been formed by such a deep suspicion of everything that even the idea of questioning the world around us is somehow being a "tool of the man."

[@angelmcglaughlin4506]

Mark T dude they do I’m in 8th grade and we watched some of this video in class and now we have to watch the rest of it on our own I’m in class rn and this doesn’t make us want to learn about this or anything else trust me we don’t

[@NoSkillsNoFun]

@@angelmcglaughlin4506 Soo, what would need to happen for you to be more interested ? Honestly curious. I personally thought the experiments, though simple, scratched a lot of important topics, while being quite appealing to watch.

[@user-qq3bl6py3g]

A unified theory of everything what we’ve always been looking for

[@TheIvalen]

All of Professor Bishop's lectures are fantastic. Both children and adults alike are just enthralled.

[@StrunDoNhor]

"Chemistry is the study of matter - but I'd prefer to see it as the study of _change_. Electrons change their energy levels; molecules change their bonds; elements combine to change into compounds. Well that's all of life! It's the constant, it's the cycle. It's solution, dissolution, over, and over, and over. It is growth, then decay, then transformation!" - Walter White, from Breaking Bad (slightly paraphrased) Demonstrations such as this were what made me fall in love with chemistry (and science in general) as a kid. Sure, changing the color of a liquid is all nice and whimsical, but what really fascinated me was the fact that such reactions were not _magic_, but could be clearly explained and broken down into steps.

[@Carbosful]

Or the study of Matter through change

[@saltyman7888]

+StrunDoNhor The study of change is calculus

[@Oliepolie]

StrunDoNhor mmmm well it's also the STUDY of chemical and physical properties.

[@gabrielgonzalez1993]

verrry trrue my frriend

[@RobertoEmilioRomero]

StrunDoNhor Chemistry is the study of both matter and its change.

[@nickfosterxx]

Hope that Chris and Chris are thoroughly happy with the current 3.5m views that their so well planned lecture deserves. Sure that a few of those young people in the audience were actually inspired to study chemistry in more depth as a result.

[@dewdude]

Did not expect to sit here for a full hour and watch. Totally worth it.

[@randomdude9135]

Yup. Except I watched at 2x so that I can rewatch the parts again if I didn't understand and read comments without having to spend extra time.

[@Nevir202]

Ya, I didn’t even realize it was that long when I started it, watched it all, though in 2x speed.

[@tbc8609]

H.

[@tbc8609]

@@randomdude9135 je. V b bi bilo. bolje 9

[@sirprofit9257]

Damm u were right didn’t expect to stay! Europe really know education better than us! Am I the only one that didn’t watch it 2x?

[@TheRoyalInstitution]

Thank you to the viewer who submitted closed captions to this video! If anyone spots any errors or gaps and can help improve the subtitles, or wants to start translating this lecture into another language, you can click here: kzbin.info_video?v=ti_E2ZKZpC4 Thank you all! We're chuffed that the lectures are being made more accessible so even more people can enjoy them :)

[@winston24234]

I Will Learn So Much! Happy!

[@chemistliwa5660]

The Royal Institution بل

[@grahamstreet6537]

9.20 subtitles read mugged instead of mopped. The iodine is mopped up by the second chemical

[@grahamstreet6537]

colour is spelt wrong throughout :-)

[@HMan2828]

The RI lectures are the best. I wish more universities would make an effort to disseminate such wonderful content as the RI does. Also I bet the kid who got the silver-mirrored flask will be in one of your classes in a few years. Keep it coming!

[@sixstringedthing]

What a great way to get kids interested in chemistry, and science in general. Not a single bored face in the audience. Fantastic stuff.

[@aasemahsan]

*Change of Color* 0:20 & 3:52 Universal Indicator 1:22 Acidic to Alkaline to Acidic (Thymolphthalein) 5:07 Shake it! Methylene Blue & Oxygen & Glucose Indigo Carmine 7:33 Clock Reactions *Change of State* 10:40 Nylon Formation 12:24 Formation of Silver (Using Silver Nitrate, Ammonia, Sodium Hydroxide & Glucose) 16:28 Sodium Acetate Crystallization 18:40 Para Nitro Acetinalide & Sulfuric Acid mixture 23:50 Burning White Phosphorus (using Liquid Oxygen) 29:00 Nitric Oxide & Carbon DiSulfide Reaction 30:26 Setting fire to a 50 pound note 😆 31:50 Fire Extinguisher 41:40 Boris Belousov's oscillating reaction 44:00 Oscillating reaction discovered by school teachers 46:14 Barium Hydroxide & Ammonium Chloride 48:00 Entropy 52:50 Nitric Acid & Copper Reaction (Story of Ira Remsen) 57:41 Le Chatelier's principle in effect (Nitrogen Dioxide & DiNitrogen TetraOxide) 1:00:01 Yttrium, Ytterbium, Erbium & Terbium 1:02:03 Yttrium Barium Copper Oxide (Super Conductor) Dry Powder Fire extinguisher (contains Na2CO3 or K2CO3 or NaHCO3 or KHCO3)

[@nickfosterxx]

Great job thank you. Have done similar myself when inspired, know how you feel. Good to have the correct spellings.

[@timothydolan5587]

Professor Chris Bishop: I am 64 years old and your making me wish I was a kid again. The excited inspiration of the faces of the children, wow. If you had been there with this demonstration when I was a child would have inspired my life into a completely different direction. Thank you for inspiring the this next generation of scientist. Who knows what the end result will manifest.

[@garyhardman8369]

It is good to know that there are some KZbin channels that you can trust.

[@randomdude9135]

Yup it's Royal Institution. Well funded I guess.

[@andersarlberg2516]

@@randomdude9135 @

[@ricardocalderon1721]

These kind of demostration and lectures for public and spevcialy for children let me have yet hope in humandkind. Thank you so much

[@fritzdoerring9058]

Humankind has ever failed; hope in God !

[@ryanrussell6256]

Chemistry needs to be taught like this.

[@metanumia]

I *love* professor Chris Bishop's lectures! I wish I could hang out with him and discuss chemistry and other sciences, he's a fantastic educator with a sharp wit! :)

[@francoislacombe9071]

The demonstration that starts at 12:25, this is the chemical reaction that astronomers used in the past to make their telescope mirrors reflective. Today, they evaporate metals, usually aluminium, with high temperatures in a vacuum and let the metal vapors condensate on the surface of their mirrors, but in the 19th and early 20th century this chemical reaction was how they did it.

[@randomdude9135]

Oh thankyou

[@bsocmtomsdcs815]

this is one of the best lectures i have ever watched!

[@rayoflight62]

The mirrors at Versailles were made by Venetian artisans with that method...

[@cheapbastard990]

@@rayoflight62 That's true. And silver makes better mirrors because it's more reflective than aluminum. However telescope mirrors have a serious problem that other mirrors do not. The reflective surface is on the side of the glass being used, rather than on the opposite side. Silver oxidizes fairly quickly compared to aluminum. So astronomers used to be plagued with frequent re-mirroring their lenses. That's not a serious problem if your telescope is 12 inches, but for very large ones it's a major undertaking. For home mirrors that's not a problem because we look through the glass at the image through the mirrored surface. So after applying the silver you could simple paint over the silver to prevent oxidation.

[@tomlord5398]

Some sign painters use this to gild silver lettering, also done with gold, called Angel Gilding. Auto headlight buckets were silvered this way, before sealed beam lights. The buckets would tarnish, turn yellow and produce dim light and have to be redone. A friend of mine restored an old Hupmobile and we had to find someone to resilver his headlight buckets. The lights on my '35 Dodge were dim and I got tickets, but I just converted to sealed beam. I imagine many millions of cars were junked only because the lights had got too dim to see at night.

[@betsegawlemmaamersho1638]

Thank you Ri for sharing for free

[@caveman6345]

The only lecture I have ever been able to sit through from start to finish without fall8ng asleep.

[@franchescabachani8688]

this is one of the best lectures i have ever watched!

[@TimothyMcAleeSrGeD]

Same here, Franchy.

[@olenkaflowers8078]

About acid and alkalain, after scool)))

[@randomdude9135]

Yeah me too

[@randomdude9135]

@@sockington1 like?

[@TwO2ThAt]

In ua I iis and my friends have

[@theflaggeddragon9472]

I like how the best demonstration in the chemistry lecture is pure physics (superconductors)

[@randomdude9135]

Yeah but I found the crystal coming out impressive.

[@GentryRobin]

This is a wonderful way to guide young minds towards the path of knowledge..

[@houdielbow5770]

Theo Paphitis has really surprised me here, not only a “Dragon” , “Entrepreneur” but also a Professor … what a man 👌

[@SuperGlancer]

I wanted to sleep so started this lecture now I'm more awake than ever

[@SamirKhan-td5xo]

Same Here. Broo😁

[@lovemyanimals7433]

This was the most beautiful video I watched on KZbin. Ah, chemistry is truly magical.

[@uppercut2246]

Unfortunately, I prefer facts based on my everyday experience, as oppose to handing my authority over to establishment. You can keep your Magic for the children.

[@PainfulRenegade]

@@uppercut2246 ahhh, c'mon...

[@KarmaKahn]

@@uppercut2246 Fortunately, facts do not care about your biases. They are just facts.

[@ramamurthycherukupalli2873]

The great Faraday has set a wonderful tradition and Prof Chris Bishop is carrying it on in all glory. Science has got back its good time. Thanks to Royal Institution for upholding the standards.

[@superchuck3259]

Sounds like a Chemistry symposium like this around Christmas time would be fantastic. Everyone can make ornaments with the shiny inside or something decorative in that spirit of cool stuff.

[@ShawFujikawa]

I had to take part in a show like this when I was asked to supervise our secondary school's Open Day for the chemistry department. Ended up doing many of the demonstrations here to wow the parents and the children. That was a great day. :D

[@thecsslife]

Best introduction lecture to chemistry on youtube and probably ever.

[@tysonbradley3330]

I absolutely love that he went back to show the Carbon deposits on the dry Ice.

[@Fleato]

As someone who has already taken a full advanced regiment of chemistry classes in uni, I still watched this because they teachers charisma and jist satisfying way of teaching.

[@risu2312]

Royal institution , two words,'YOU ROCK!'

[@percih70]

Much appreciated, lectures such as these take enormous preparation, a hugh thank you to all involved.

[@purplealice]

When I was a little girl, my father worked in a machine shop where they made parts out of magnesium. He brought home a small piece of magnesium home, and set up a demonstration. He had a bucket full of water, and a highway flare. He lit the flare, and used it to set a bit of the magnesium on fire, warning me not to look at the bright light. He then dropped the piece of magnesium into the bucket of water - it kept burning, because the magnesium was able to react with the oxygen in the water. He liked to teach me about science.

[@zyghom]

What an excellent show! What an excellent introduction to the world of chemistry! Where were such teachers when I was in school? ;-)

[@MrLeniltonsouza]

Amazing. We need teacher like you.

[@egelloc]

Oh My GOd! The Best Thing I have Ever Seen. Nicely Done by our great professor Chris

[@FlockOfHawks]

A joy to watch this passionate guy in his curosity lab . Kudos , RI !

[@x_gosie]

That pouring sound effect is so satisfying.

[@caxrlos_7434]

This is why I love Chemistry !

[@mattstablet01]

Chemistry is amazing. Seeing how the elements react with each other is so fascinating. It really does help us to understand the world better. The advancements in the medical field due to these discoveries is crazy. This is why I love chemistry.

[@GodlikeIridium]

At 20:00 he plays "Hindenburg Zepellin" ^^ And the audience loves it :D But really interesting lecture. And i saw some reactions i could show to schoolkids in the lab :)

[@patosmith923]

How come schools are not doing this type of stuff to keep kids interested? application of theory always make life more interesting . Great Job Chris Bishop!

[@WildWillieWiccan]

They can not afford the liability insurance.

[@NeRdWxA]

Smoked a few bowls... and this had captivated me for the entire hour!

[@trefod]

Far better entertainment for children than going to the circus and get Clown-phobia.

[@viktorjangsell1849]

Coulrophobia

[@eddygalperin2657]

sure abt that??

[@gideonbowman2689]

That is a rather specific observation.

[@mewwew411]

Fascinating. When I read the word dramatic, I then imagined extreme acids, explosive chemicals and thermite.

[@Adramelk]

science and chemistry never stops bringing a smile to my face in how it changes everything around you.

[@betsy19701]

This makes chemistry so interesting. Wow, Thank you!

[@pittiplatsch5976]

wow.this was just cool. bud also sad that this vid only got 950000 clicks by now.Very nice show Mr Bishop and thanks for the upload.

[@SuperSajjadh]

Found this video by accident. As soon as I was about to close the video, I ended up watching the whole lecture. MAGNIFICENT !

[@user-ob2hl7ec2b]

What a thrill to have you as a teacher!

[@heatherdimarco1061]

Magnificent lecture presentation and beautiful displays!!! So appreciate all the work and knowledge that went into it all!!!

[@andrew_owens7680]

I would gladly pay the price of a baseball game to expose my children to a live demonstration like this. Brilliant!

[@afterthesmash]

For this to make any revenue, it would have to be priced at the level of premium bleachers for a playoff series. I almost wonder if RI could afford to pay for all the glassware cleanup on the audience revenues alone. Some harried administrator invested an entire _week_ dealing with the local fire department before this was authorized to go ahead. The only thing that makes this cheaper than sports is that they didn't need to fly a contingent of 40 players and staff on a charter flight to some posh hotel. (You can see how the assistant in the white coat is all about posh, even though he probably bust his hunchback in college as much as any athlete ever bust his hump.)

[@afterthesmash]

Fire chief: Hey, are there _any_ special considerations in deciding which fire control system to deploy first?

[@afterthesmash]

I'm just spit-balling here, but my first bid is that there was a four-person HAZMAT team hiding in the wings-all with graduate degrees in chemistry-and that at some point they sat down with a corresponding team of four professional HAZMAT firemen and firewomen from the local firehall for a three-hour coordination meeting, roughly two weeks ahead of time.

[@afterthesmash]

Also, do you think they kept the nitric acid and the giant hydrogen balloon and the magnesium foil and the liquid oxygen and the white phosphorous all on the same shelf back stage? The internal HAZMAT team was probably gophering these materials JIT throughout the demonstration (just in time) from separate rooms, off separate hallways.

[@afterthesmash]

At one point, I was halfway expecting him to demonstrate burning sand or concrete in a chlorine trifluoride atmosphere. (The ultimate HAZMAT 11 on a scale of 1 to 10.)

[@shadarnott1334]

They should do this presentation at every school around the world, That was awesome! I watched every second of that video from start to finish and didn't even think about skipping ahead once.

[@Photosynthesisbeing]

its learning like this getting kids involved and giving them something that is needed far more around the world to create a much better interest in our facinating world

[@chasehicks535]

The clear liquid that instantly turns black was amazing. I was saying wow like the younger kids in the audience

[@carpetmonk]

This made me feel like a kid again! Loved it. Its a rare occurrence to recapture the feeling of youth! :)

[@inujosha]

That was nice of him to give the boy that souvenir because beakers and chemicals are expensive. However, I'm guessing they're hoping he will get interested in chemistry and enroll there and they'll get it all back in tuition.

[@davidtroia7426]

I got into loving this bc i used to love watching Mr. Wizard on PBS. We need more education like this for our kids & videos like this need to be recommended to my kids when they're using their YT accounts.

[@TheRoyalInstitution]

Thank you so much, this means a lot to us. We don't quite have enough children's content to make a whole separate kids KZbin channel, but you may want to check out Andrew Szydlo's videos - kzbin.info/aero/PLbnrZHfNEDZxPZ369tAF0wjnNo-A3EcDi (the older ones are filmed here in the Ri, the newer ones he put together at home during lockdown). Also, for something slightly different, we also host the annual Christmas Lectures that have been going since 1825 and feature scientists from a different field every year. Most of the back catalogue is freely available now - www.rigb.org/christmas-lectures/watch (due to copyright agreements with the producers and publishers we are only allowed to feature them on our website rather than on KZbin)

[@chococandy8009]

@@TheRoyalInstitution Loads of thank you @The Royal Instituion. It's really a privilege to watch these amazing videos for free on KZbin:)

[@yyyzzzz]

Great video, I remember going to Liverpool university Xmas lectures, in 1957-8, they were also very interesting and inspiring for a young kid. Nothing boring about chemistry, they must have inspired many a youngster.

[@AndrewSeymour]

Watch this with your kids!

[@mariazia221]

Andrew Seymour what if u have no kids

[@laz001]

I've watched a lot of science demonstrations - this one is beautifully prepared - you know it's good when you hear the audience actually gasping and going wow!

[@bazza1carter]

So glad this appeared on my feed. The RI Xmas lectures where a huge inspiration and influence on my early blife.

[@kennyearthling7965]

That was amazing! loved it :)

[@ceruchi2084]

Didn't we know chemical reactions can be reversed from the moment he explained the hand warmer?

[@salmjak]

Thats not a chemical reaction. In a chemical reaction the molecule change, i.e. new substances are created. In a hand warmer it’s still the same substance, it’s just supersaturated in one state and crystallized in the other.

[@randomdude9135]

@@salmjak oh I see

[@MarsrecoveryteamBlogspot]

I was thinking the same thing along the entire lecture.

[@sequoiarattray4384]

Oh my, I'm watching this in class and I'm in shock. So cool!

[@Gitarrenseite67]

Eine Empfehlung für all diejenigen welche selten Gelegenheit haben fremdsprachliche Kenntnisse in Verbindung mit interessanten Themen zu üben. Royal Institut hat für fast jeden Geschmack etwas. Sehr gut!!

[@Spycyzygy]

That definitely convinces me the rest that I want to be a chemist. I was already 90% sure but whabam i am totally sure. fanfriggintastic demonstrations, wish I could have been there personally.

[@duncanwhyyou611]

Three years has passed by since you made this comment. Are you by chance still on about being a chemist?

[@tylerjb1017]

Leif Duncan Urdaneta I guess we’ll never know..

[@TheLocoUnion]

I think he was just excited about the Illudium Q-36 explosive space modulator!

[@mikehutchison3989]

Thank goodness for Duck Dodgers

[@mikethomas2510]

Before I started to teach any chemistry, I always used to have two solutions - one was a solution of lead nitrate and the other was a solution of potassium iodide. I would ask the class what they might expect to happen if the two solutions were mixed together. No-one ever got it right (for non-chemists, you get a bright yellow solid, a precipitate, formed. This is lead iodide. ) The result is so unexpected that it would immediately grab the attention of the class. Chemistry is fun, not just a collection of apparently unrelated facts. I think that Professor understands this very well. His lectures are always full of fun.

[@Hugh.Manatee]

The assistant who was handling the dry ice was wearing gloves. The professor was very careful around it, never having to touch it. With the liquid nitrogen and liquid oxygen a possible mishap would have allowed him to act quickly while he'd be protected by the Leidenfrost effect which creates a short lived protective barrier of gas. I'm pretty sure they had a good talk beforehand on the safety of the people involved, as well as the audience members.

[@ZeedijkMike]

This is the lecture that just keeps giving.

[@Kram1032]

This is absolutely amazing! I've seen most of those before but they were presented really well.

[@pascalpeeters1290]

so when i feel i'm in love with chemistry, is it a chemical reaction ? and if so, is it reversable ?

[@nawdawg4300]

The Royal Institution produces such great content that's extremely entertaining and informative. They're not as technical as I'd like, but that's probably for the better. Getting the public interested in STEM is something I love to see.

[@gauravjoshi5570]

Acid Base -> combustion -> reverse & oscillating reactions -> and many more.. All covered beautifully in one video.. Just Awesome..

[@Gizm0sis]

I want Kevin Spacey to demonstrate chemistry to my school...

[@gluefrog78]

+Jacob Gray What a strange thing to write.

[@joshjones2287]

+gluefrog78 I see your point

[@outseeker]

how so?

[@spingewill504]

you want an actor to perform at your school

[@jamesbarben8318]

9

[@Jayinjapanese]

my teacher Ms.Gregory had us do a work sheet on this..kind of cool

[@Nilguiri]

Informative, entertaining, and interesting. I remember watching this about 8 years ago and it was worth watching again. Excellent.

[@javierharth3647]

The boy's determination and enthusiasm are outstanding.

[@zalaluddin7911]

Very long lecture but didn't feel bored at all. Interesting experiments and very good presentation.

[@sophiasolvett6802]

I was gonna make a joke about sodium and hydrogen, but NaH...

[@mr_sowong9464]

Sophia Solvett sodium hydride

[@dwarfinger]

Funny!

[@AB-80X]

Good one Ms. Sophia. Same procedure as last year?

[@jasonng04]

I told my friend a joke about Potassium, he said "K".

[@MrBilld75]

Lol. Good one!

[@tomhames5863]

Very well presented, as what was said in a previous comment, wasn’t expecting to watch a whole hour, but I was hooked! What a fantastic tutor!

[@RochelleM491]

Amazing chemistry and also introduced molecular physics and a touch of quantum physics ... brilliant..!

[@HunterXray]

24:31 I certainly hope he doesn't have any liquid hydrogen in there. Imagine the "BOOM!" if it got sparked.

[@onradioactivewaves]

I had to rewatch that a couple times when I heard it go from Hydrogen to Nitrogen.

[@j.howardj]

@@onradioactivewaves Yeah, he does say hydrogen a few times then says nitrogen just after.

[@abhishekswain2502]

amazing professor chris! Your book PRML was my introduction to machine learning :)

[@onbeyondzebrabydrs]

A friend of mine showed me a clip from this video about 6 years ago. Something about the Nylon experiment amazed me so much that it was the catalyst for my interest in Materials Engineering. I'm now in my fourth year of a Chemical Engineering program, specializing in materials, and that experiment still brings me just as much wonder as it did back then.

[@pearlwhite7157]

Awesome Story, Thanks for Sharing 💖💖💖

[@gabrielgonzalez1993]

Wow!! what an amazing lecture on the beautiful curiosities of chemistry that kept hope alive for growth in the field and pursuit of more knowledge. Human kind's journey of science has been amazing

[@athriaxo]

When I started watching I was like: "Ill go to bed in 10 minutes"... now I realize its like 5 am xD

[@gideonbowman2689]

This is the exact same thing that happend to me.

[@k1savage247]

why u going to bed at 4

[@8bits59]

"Nitric acid also acts upon trousers." Glad you figured that out so that I don't have to lol

[@CliffLewis28]

Professor Bishop is amazing. I was fully immersed for the entire lecture. So brilliantly presented and thoroughly engaging! Added to my fascination was the lecturer’s uncanny resemblance to a certain music legend, Mr Phil Collins.

[@Br0ken]

What a Wonderful Lecture. Thank you. One of the few things I have watched on KZbin and I didn't skip through. Had me the whole way through. Loved it.

[@Metalbirne]

It doesn't matter were I go... Entropy is going to get me. Even on youtube. Earlier today I found a Greathammer in Guild Wars 2 with the name Entropy. I JUST WANTED TO HAVE FUN!!!! WHYY!

[@DanDishonored]

24:30 transition from liquid hydrogen to liquid nitrogen :-D

[@onradioactivewaves]

I caught it too and it really threw me. The lecture is so well prepared, it's really difficult to call them out on it.

[@jackjoyce8070]

Professor Bishop is like the male version of Professor Kate Biberdorf from UT Austin, except he is calm and chill. Professor Biberdorf if always full of energy and is always acting crazy. both teachers have one thing in common, they perform fun and wacky science experiments as they lecture their classes.

[@tacticalnewfie2922]

What an awesome display of showmanship, I watched the whole thing and now it's time to hit the share button!

[@Archiekunst]

24:37 kept on saying liquid hydrogen and then finally switched over to saying liquid nitrogen without realizing it.

[@DeathmetalgamerEBS]

Wrong, Liquid nitrogen (-196°C) is absolutely able to liquify oxygen (boiling point -183°C)

[@schmeckelgruben776]

24:30 He said "hydrogen" and the closed captioner typed "nitrogen".

[@covodex516]

27:20 he also shortly after that says that there are 2 "kinds" (Allotropes) of Phosphorus; there are a lot more and usually you count at least 3 - White, red and black phosphorus.

[@randomdude4136]

I was quiet scared when i heard he was going to make liquid oxygen with liquid hydrogen, that seems like a recipe for disaster in a lecture lol

[@drflash36]

Yes! You do Not want to 'play' with White phosphorous, as it readily burns very Hot in air, and the P2O5 that forms is nasty stuff by itself! (See: en.wikipedia.org/wiki/Allotropes_of_phosphorus#White_phosphorus for more info.)

[@yeraysantanaaday6827]

The future students of chemistry need some kind of visual motivation to became interested in the science....because the theory is at first to abstract to learn it...the practice and the theory have to go hand by hand..

[@Aetohatir]

16:05 That's a generous gift The cost of the silver is negligible, but the flask and stopper could be easily reused with some nitric acid. All in all I'd say that's around 40 bucks of something that was perfectly fine to continue to use.

[@timothydolan5587]

Absolutely Amazing! Thank you for sharing your knowledge and understanding. Great job!!!

[@Holy-Terrorist]

**=** Strange echoes sound between 0:15 and 1:45, lol 😂 34:26 Wow, rocket nozzle 😁 35:37 Interesting inverted reaction, CO2 to C by Mg making MgO, and the final reaction 1:06:50, about chlorophyll chemistry 😃