Silver Mirror - Periodic Table of Videos

[Watswat5]

Has Neil said one word the whole series?

[juanmacrack93]

good ol' tollens

[Greeblimus]

Is your silver solution the same as the "Tollens' Reagent" The A-Level AQA syllabus keeps insisting on, or has this been done differently?

[wookidoo]

His Royal Stigness

[japanesepoptart]

I understand that mirrors can be made with aluminum too. Does anyone know the chemical process for making an aluminum mirror. Replacing silver nitrate with aluminum nitrate seems way too easy.

[1aldoatthechallenge]

evry time i watch one of their vids i get either hyper or just happy i just enjoy their success in chemical reactions

[ManganistanDraselny]

4:13 :D :D Perfect

[heyandy889]

 Oh, man! That really worked! It's cool to see that understanding the way molecules interact can lead to just the result you want. :o)

[chimie96]

I think you're wrong (1:17). The silver nitrate reacts with the ammonium hydroxide. The new compound obtained is the silver oxide because the silver hydroxide (which has a very very very short life) decomposes rapidly into silver oxide and water.

[s3xyb34stFORBES96]

3:22 epic face

[spotlightman1234]

dont you mean silver oxide is formed?

[scienceman64]

You can also use silver nitrate and hydrazine sulfate

[pyropakman]

The clock when he added the sucrose to the silver diamine said 5:20 PM. Yet when he removed the flask from the water bath and said, "it's about an hour since we started the silver mirroring experiment."

But the clock said 5:52. So does this mean it only takes about half an hour to run?

[IScreamer]

Yup, similar to the silver mirror test for aldheydes....doesn't take that long at all to see the mirror.

[AntiProtonBoy]

Neil is the new Chuck Norris.

[loserofnothing]

his singing at the end is awesome! we made a mirror! cute as hell man! :D

[ultimatebas]

2:15 Nice bong! haha =P

[Jakub0071]

I love you Periodic video

[Tw4tz0r]

@ 2:23 Neil is chewing pure potassium.

[Saloptus]

@Tw4tz0r Neil is just a badass

[shunnehling]

I love the lab tech :P . best part of every video.

[Freechips1]

Was that Tollen's reagent?

[jacoman1234567]

@Freechips1 Jup that's the tollen's reagent that's formed after addition of the ammonia.

[prototype615h]

@Freechips1 yes it is

[chemiealex]

Who is Neil waving at in 2:37 ?

I love him :D

[Khalastas]

@chemiealex

LOL

That's so funny

It was a massive wave too

[catman72]

i love your videos.

this one is very useful for me since

i am learning flameworking and

silvering is one of my goals.

will you please make a video

of your university flameworking facility?

you must have a good one, i'm sure.

you can show us how they vaccume those silvered flasks :-)

[liuf92]

I did this in class =D super fun

[F1L5]

great no offence 1800s are over now can you make pc chips or something usefull dude x

[anjite]

he says about leave it till n hour but actually its .. jus half nd hour..

watch the clock behind lol

2:25 and 2:53

[F1L5]

How amazing great stuff

[livilassx]

I love Niel :)

[Mrluisao17]

lol neil was funny at the end

[CallumMack]

Ha ha @ the guy being awkward in the background. 2:34 - Wave @ window

i mean i definitly learnt loads of chemistry and didn't get easily distracted.... damn it, its like school all over again.

[theraytex]

will it stick to wood????????

[PhantomMaster101]

I do not have a degree in anything but if I could get one it would be in Chemistry. You Guys and Gals in Notting U are the greatest!

Keep up the Vids.

[mcchuff]

This is one reaction that really sticks in my brain. Mainly because our fool of a teacher used extremely out of date ammonia which released loads of ammonia gas when reacted with the tollens reagent. stunk out the entire chemistry department and left me with a cough and a headache haha!

[IScreamer]

This doesn't make sense. Out of date ammonia wouldn't have much ammonia in it. Most of it would be lost to the atmosphere over time since ammonia is a gas and the ammonia solution is merely the gas dissolved in water. I think something else must have been the source of the smell.

[beerengr]

In the past in the HS chemistry class I teach, we've also added a dilute KOH soln to tollens reagent with excess ammonia to ensure its still clear, then adding the glucose. This makes heat and time unnecessary and gives a much better quality mirror. While it's precipitating, one can stopper and shake the heck out of the flask and coat the whole flask as well.

For Christmas we used some old glassware to make some "Christmas Chemistry" ornaments!

[seanarrative]

great!!.....now how do you clean it?

[chemiealex]

By adding nitric acid.

The silver then reacts to silver nitrate again.

[mathchadwick]

the bald man was chewing gum

[alanstarkie2001]

Nicorette I bet!

[MegaMonkeyExtreme]

great otherwise!

[MegaMonkeyExtreme]

2:57... about an hour? look at the clock... exactly half an hour (2:28...2:57)

[Asskickinkid]

@MegaMonkeyExtreme rotfl, can't trust anything he says now...

[fulltunes]

2:20 that chewing guy in the back. i like him best :D

hes on so many videos and i didnt hear him talking even a word for now.

[pankolorko]

If i only had teachers like you guys at school.

[williamkendrick]

@pankolorko learning would be so much fun.

[hugohugo37]

Isn't silver one of the best conductors of heat? Why wouldn't the silver layer conduct the heat out to the glass?

[Butandiolmonoacrylat]

becaurse between the to sides is no atmosphere.

[Sunderas]

reflection

[rals8899]

The silver layer is not in direct contact with the liquid substance. There is a vacuum that prevent heat from escaping. But I still dont know why they use silver.

[ashridah]

The vacuum will reduce the amount of heat that conducts through the thermos inner flask, but the silvering will reflect any radiated heat as well, so you can stop infrared from going through in either direction. It just makes it a bit more efficient, and the silvering process is fairly simple to do.

[alanstarkie2001]

probably because it is easy to do. If you think about it, the flask is ideal for a liquid media but no good for thin film deposition techniques.

[IScreamer]

It's a reflective surface and will reflect the heat transmitted by any hot liquid liquid on the inside of the vacuum flask. Conversely it will reflect the heat of the air on the outside of the flask and help to keep liquids inside the flask cool.

[IScreamer]

It's shiny and, therefore, reflective. Moreover, the vacuum space between the inside and outside of the flask will prevent the transmission of heat in either direction.

[pepsibookcat]

Nice, visual reactions. My son was watching with lots of loud, "OOOOO!"'s and "Cool!"'s

The end with Sam in the background was funny.

I'm so glad we get to end up seeing a lot of the unused bits.

[Butandiolmonoacrylat]

What works better than sacharose? hydrazinehydrate or aldehydes?

Nice Work!

[eltotoX]

Neil is just cool there... chewing his gum, calmly waving at someone... he's a cool man.

[Franchifis]

cool

[ScoobyJnr]

lol, great stuff.

[matthew623210]

Great video! Very interesting, but why use silver?

And most importantly... Where was the Professor??

[mecrazy5]

Fascinating stuff.

[redone632]

Curious, why use silver for the mirror? Aluminium has the highest reflectance of any metal.

[dufusrunescape]

how make ionized wateer?

[gulllars]

put a salt in de-ionized water :P

All water you will find in nature, tap water, and drinking water from bottles is contains ions, and is therefore ionized water.

Even pure neutral water containes ions, H+ and H3O-, but we don't count that as the water being ionized. Pure neutral water has an ionic concentration of 2x10^-7 mol/L. Water itself has about 55 mol/L, so pure neutral water contains about 3,6 ppb ions (parts pr billion). Less than 4 ions pr billion H2O molecule.

[qbasic16]

normal water is a bit ionized, if you want more ions in it, take mineral water ;-)

maybe you meant deionized water like he said, you can buy that in any "do it yourself" store in the car section.

[steadfast1984]

I would love to see some explanations on M-state elements, like High Spin M-state Gold or Platinum powder.

[BaKer312213]

lol, we made a mirror at the end cracked me up

[GuppyPal]

Thanks, Pete!

[Barnekkid]

Very interesting video. This is the kind of science I never rec'd enough of in highschool so I appreciate seeing it here.

[rjhrjh3]

Look closely. You can see the camera that was used to shoot the video.

Whenever you see a shiny object in a movie or photo look for the camera.

[mecrazy5]

Odd boy.

[seustaceRotterdam]

I was once using Cu(I) as a reagent. The reaction went all wrong and it gave Cu(II) and Cu(0). I had a very nice copper mirror!

[Gerafix]

Well, I'd hardly call it a perfect mirror.

[HiyoriTamura92]

We made a mirrrrorr!

Lol'd.

[amilegend666]

lmao "hey sam, we made a miirroorrr" random :p

[dan020350]

i wonder is this how traditional mirrors are made?

[NarutoSSj6]

this is really exciting!!! ^^ i never thought about how those things were made.

[johnclavis]

Once again -- a triumph! Great stuff. Brilliant. Keep it up!

[Intervene]

Nice video. thanks.

[Paxmax]

Ah... cool.. so I can make new reflectors!

.... hmm do not know what I would do with a new reflector.... must.. find .. use..

[culwin]

coolio

[xswtserendipityx]

tollens! i love this test for aldehydes. one of my favorite from ochem lab :)

[jjkul1]

Hello Mr. Camera man

[Lavabug]

I think he's called Brady.

[pepperly209]

Amazing!!! I loving watching ur vids ... ;)

[fr3d420]

Your videos have revealed my love for chemistry.... thanks... you guys are mega cool... specially the old guy.... In other news... YOUTUBE is taking FOREVER!!! and no. im not on dial up.... May I suggest using another video website?

[AlphaMark3]

Youtube took no time for me, i think they are using decent quality cameras and it may be your internet that is slowing you down.

However i do wish i could download these perhaps on iTunes as a video podcast if you want to keep the videos free.

[lejink]

i like this guy, can tell he really loves doing this stuff makes it a lot easier to learn from him

[byront37]

Well that was cool

[ElveeKaye]

So that's how it's done! I love these videos. :o)

[douro20]

Isn't there one other method for chemical deposition of silver?

[douro20]

It's called Tollen's reagent. It's used to test for aldehydes. Any aldehyde will work, but here I believe they used glucose.

[omegacds]

I love the way the baldy dude waves to someone outside at 2:30 ish.

These vids rock.

[yoonisaykul]

i play 4:01 over and over and hes sounds like greased-up-deaf-guy from family guy

Good video by the way.

[P00P0STER0US]

Always a pleasure getting some education on this channel :)

[tclonedelta7]

lol at 4 min

[hadr0n]

Informative and entertaining as usual. These videos make me wish I'd studied natural sciences rather than computing.

[LWStupidus]

Very cool

[Keylimedelight]

Anyone else see the ICY tee shirt?

[GetMeThere1]

Cool !

[rlewis1946]

Was this process used to "silver" reflecting telescope mirrors some time in the past?

Another great Chemistry lesson!

R Lewis Atlanta, GA USA

[pyropakman]

They only waited half an hour. Not an hour.

[nhojmabon]

haha, very observant of you

[solojam]

silver is the best element

[JOEX2210]

I did this in my chemistry lesson a few weeks ago, and the entire inner surface of my test tube. It looked amazing!

Also, those energetic salts nearly blew up my school because they thought it would be a fantastic idea to keep it all in a rickety old cupboard.

[biscuitfinger]

Neil always looks thoroughly disinterested.

[iwan0t0smith]

@biscuitfinger

I think all lab assistants are like that, Our one at college is the same

[LokkenJester]

"look we made a mirror!"

:D

[Craydon]

*Begins plans for a Cobra Commander mask*

[taofledermaus]

I imagine one could coat the outside of the flask in the same fashion. My question is, wouldn't some chemicals react to the silver on the inside of the flask?

[pyropakman]

Yeah, if you have a larger container with the silver diamine/sugar solution, and then place a smaller container inside it, the outside of the smaller container will be silvered.

[grndmstrjoe]

Come on Neil....what's with all of the eating haha and what's the volume of that round bottom flask......that thing's huge.

[welderb]

vid not working

[rroge5]

how many psi is a vacuum?

[CrazyMrChris]

Zero. More importantly, you should be asking "what psi is atmosphere?", because that's the amount of pressure being applied to the outside of the flask, with no support inside.

[Itslvle]

That depends. Obviously 0 psi is one answer, but that's pretty much unobtainable, so when we talk about a man made vacuum or even the vacuum of space, we don't mean a perfect vacuum.

A rough vacuum is anything between 0.44-14.7psi, so basically a small drop in pressure can technically be called a vacuum.

The closest we've gotten to a perfect vacuum is just below 2*10^-15 psi, which is still pretty far from what's in space; 2*10^-19 between stars in the Milkyway and 2*10-21 between galaxies

[opatlion]

looks like my poo from earlier that precipitate.

[NAMLegolas]

SWEEEEET hahahaha thats really cool

[sypher113]

I wonder how many years bad lucky you would get if you made a mirror just so you could break it?

[chemiealex]

Neil is cool :)

Great video!

[oOoxelAoOo]

That's rather cool.

[TheSmiterer]

Neil was eating in the lab!

[rax2099]

Cool!

I did that when i was in first year in College...

2: 37: Who's Neil waving at? lol

[MeLL1eJ]

Pretty interesting :D

[troglodyte3344]

I can make that with the power of my thoughts.

[9thshaolindragon]

Why doesn't Neil ever smile?

[glassjb]

go simax, simax is the best glass

[Maladath]

Wow, looks like The Stig's eating in the lab again. Or he is chewing some really big gum.

[joeliscool92]

ive done this in school :)

[memouson239]

we did this in chem I ! like a few days ago

[GVlogs]

2:20 was your lab tech chewing in the lab??? also where are his safety goggles?

come on lads safety first!

[tape991]

i'm pretty sure he knows his stuff

[BeanTVYWG]

Neil is inert. He doesn't have to worry about such things.

[Digeridude]

@BeanTVYWG: No, no, no. You're mistaken. He's inePt.

[xKevTiffx]

Pretty interesting.

Thanks for uploading this.