Cool Science: Silver Chloride Photochemistry

[TheAnonymousFTW]

Hi Nurd :3

[acuriousbeast]

Informative. Thanks!

[charlese60125]

anyone else think that looked like cocaine???

[JibbyDee]

What does the silver chloride turn into when the light strikes it? I read that silver bromide goes from yellow to purple when light hits it. I'm fascinated by all this but I really want to know what the light actually does to these silver salts.

[DeanMalenko]

@JibbyDee my guess is that the light punches the atoms, knocking off electrons which causes a chemical reaction with.. well here ends my thought.. I guess oxygen

[TheAlertHusky]

You can tell he's Canadian because he said: "eh"....why do people post shit like that? I do say "eh" all that much, eh.

[scienceman64]

this is also how transitions corrective lenses work

[PyroDesu]

SCIENCE!

[Star12312312345]

And my classmates think science is boring. Well hey will be burning in hell.

[Simon4romDk]

Isn't it what they used in the 2nd World War, in the bunkers, if the light should dissapear?

[Elune137]

@NurdRage Why not soak the filter at first with AgNO3 and then after drying apply NaCl solution? I guess, then the Ag- ions should be incorporated in the paper, right?

[luigifire1001]

i hate ads

[sambrulz]

Would the experiment work with CuCl2, AgI, AuCl2, LiCl, or any other halide? :P

[spotlightman1234]

@sambrulz yes all of the above, not sure about fluoride or bromide though.

[Knalhummer]

Is table salt KCl or NaCl?

[spotlightman1234]

@Knalhummer NaCl. but KCl will works also

[SteelersRep]

CANADIAN MACGYVER

[melnadiacillian]

does CuCl work as well and if so plaese show how to make CuCl.thanks.

[japanesepoptart]

@melnadiacillian

I don't think it will work with copper chloride. only silver halides have this photochemical effect.

[x69Crunchyx]

t-his guy is big brother

[japanesepoptart]

I remember how my mom and I used to do this in her photo lab she had but with actual photo paper. I love digital film and all the things it does, but if I had the choice, I'd prolly stick with good old fashioned silver. plus, there's a certain satisfaction you get from developing a good print. :)

[svenroos1]

If u use a magnesium strip it will take less then 10 min.

[mydogsparky1991]

that was pretty cool.

All we do in chem lab is identify chemicals and empirical formulas.

this would be a fun one to do.

[MrThomasj95]

Please show more Photochemistry if you can. It's Very COOL.

Thanks.

[AlexWHock]

The negative finish looks kinda like a heart. I guess you really do love science. :D

[pyropakman]

if you want to store the silver chloride for long periods of time without fear of photodecomposition, cleaned out amber glass A1 steak sauce bottles are GREAT!

[deimos2k6]

wow that's a very nice logo...

[japanesepoptart]

I believe the amount of chlorine produced is miniscule because I've done this with my mom (who is a professional photographer) in a small enclosed darkroom, and I didn't smell anything that remotely smelled like chlorine.

[ScienceGeek36]

nurdrage, the silver nitrate formed will form sodium nitrate solution right?

[mewrox99]

@ScienceGeek36

Yes but the liquid may also have unreacted silver nitrate and sodium chloride

[greatkid4869]

we were just learning about this in class! i had a hard time getting everything down, but this video gives me a good idea.thanks!!

[mrmeowmix2300]

Is it possible to turn it back into silver chloride after exposing it to light? Im pretty sure the answer is no, but Im just checking.

[gasser5001]

do you want to play a game?...the voice sounds like jigsaw

[olympicfan2]

when it decomposes it forms chlorine right?

[joaomorris]

can you fix it? congratulations!

[SulaFreaks]

HA, didn't let mine dry:P

But i'll post the video soon..

[darklightnessful]

cool for nurds

[UCreateChange]

This is interesting! Cool to know how this works.

[TheGoku907]

it helps people

[JACKSONSPIDER]

does it also make NaNO3?

[chemiealex]

Yes, it does

[blueduderanch]

love your videos and im a subscriber but seriously, your nails are a little too long

[radioactivemonkey111]

he probley plays guitar

[blueduderanch]

that would be an acceptable reason :D

[chemiealex]

If he playes the guitar, he has to have long nails

[blueduderanch]

i play and have done for a long time and i dont have long nails

[nextboo]

CAN I KEEP IT?

IS IT SOLID?

[justonium]

I tried this, it works great! Is it releasing chlorine gas?

[chemiealex]

Yes:

2 AgCl --light--> 2 Ag + Cl2

[simbathewildcat]

really cool experiment!

[ilhadosmacacos]

ಠ_ಠ

[killman369547]

cool 5/5

[AScannerClearly]

I see you're backed-up with questions here lol. But can te AgCl be recycled, so that darkened powder can be re-lightened? Preferably without requiring chlorine gas to do it haha.

Great video though, thanks for sharing!

[Athiril]

Yes, with a rehalogenating bleach, for example a solution of potassium ferricyanide and sodium bromide, or in this case you probably want sodium chloride - which should work - I think.

[chinesepinguin]

how would you fix the image, or stop it from further developing

[Athiril]

With fixer.

You can make your own universal fixer from sodium thiosulphate (found at pool supply stores) or just use fixer.

[chemistmcg]

could you prepare the AgCl ahead of time so that it is already dry? Would you spread a thin layer onto a solid support and expsose as demonstrated? and I assume store it away from light.

[Athiril]

You can mix it with food gelatin found at stores to make an emulsion layer you can spread over something rather than straight powder.

[loltehinternet]

Of course his voice really sounds like that! Born with two Y chromosomes, I'd wager.

[jobindnl]

does your voice actually sound like that?(no offence) or do you do some computer effects to hide your voice identity?

[Jayemay]

Next you need to show us how to develop the images.

[Athiril]

Its already developed by exposure to light which does a similar thing as short exposure + chemical development

[wholenote654456]

Greetings, nurdrage. Can we also use a centrifuge to settle the AgCl to the sides? Or will it have more disadvantage?

[NurdRage]

you could.

but you don't really need to, the extra recovery is very little.

But if you want, go for it :)

[3MTARTANTAPE]

how can you stop any further reaction once the "image" has been etched?

[sportpedmikey]

Pretty cool, eh?

[xamRedhead]

"pretty cool heh?" lol

[ShadyMan01]

If silver chloride precipitates from the solution, does the solution that you pour off now contain sodium nitrate?

[svenp]

Your videos are great, keep up the good work!

[MissyJae]

This is how early astronomers took pictures of the night sky!

[kallevigabc12]

what could be considered a bright light 100 watt light bulb?

[glyceroltrinitrate]

When the AgCl decomposes, it decomposes into elemental silver and chlorine, correct?

[NurdRage]

yes

[Oz6102]

Poisonus Chlorine

[NurdRage]

You just lost the bet. We are completely and totally averse to making anything that goes boom. ;)

[SasoriRocks988]

Why do you disgise your voice ?

[cresteddrake]

@NurdRage in your opinion what was your most dangerous experiment so far?

[skuitarman]

I fill bad for you, because every one on youtube just wants to know how to make explosives, when this is chemistry! not explosives!

[miraclo3]

could i use the Silver chloride for flash powder

[milotickz]

was this done in the olden days?

[albgk]

if you were to store the silver chloride for future use, you would have to use a solid or tinted container correct or is that even neccessary

[pHzerodotcom]

You dont usually store AgCl. Usually you store AgNO3 and add Cl- to it when nescassary. But yes, if you did store it, youd need to use a tinted container

[albgk]

ok cool

[xokekxo]

if the precipitate is the silver chloride what happened to the sodium nitrate?

[NurdRage]

its in the water, which you blot away

[b43e65f77]

Mix with magnesium powder,will it formation light sensitive flash powder?

[NurdRage]

nope

[moosey333]

Ha, sorry I had to laugh at that.. just because you used a nitrate to produce it doesn't mean it still is a nitrate.. thats like using salt instead of a needed oxidizer because just because it's silver chloride, doesn't make it any better then sodium chloride. No oxygen there.

[Coby19666]

Wow :o Could this be how early photography started?

[smvuy]

that was how, a mess in a lab istarde the whole thing

[TwistedMayhem]

cool stuff

[HugelyBig]

Alternatively, add ammonia to the mixture and watch your precipitate disappear. =D

[NurdRage]

That's doesn't help with the photochemistry.

[HugelyBig]

Well no, but it's still kinda cool. Not awesome like what you did with the precipitate, but still cool. =)

[NurdRage]

if you want some cool science, check out our "NurdRage Presents: 3 cool things of science" video.

[fukingdahc]

very cool stuff !! cant stop watching! when u going to make tcpo?

[jbeer82]

is it silver bromide that is used in film?

[fight4beer]

hi where can i get the silver bar and all the chemicals for this??

[NurdRage]

You don't need a silver bar for this, just silver nitrate and salt. You can buy salt at your local grocery, You can make silver nitrate in one of our previous videos.

[Shumeshi]

Do you have a silver mirror reaction in one of your vids? Sorry didn't bother to check, if you do that's great, it's a neat reaction I believe to test for aldehyde.

[NurdRage]

check

[Killerkaizer]

i wonder if i could enter this is some kind of science fairs or somethin

[NurdRage]

i don't see why not. ;)

[6LordMortus9]

Subbed after watching the first vid.. have been watching all of them now. Very interesting stuff. can't wait to see how to make TCPO.

[NurdRage]

thx

[agdamp]

genius genius genius

love it :)

[hiervince]

cool

[Flythruproductions]

awesome. I subbed too.

[NurdRage]

Thank you!

[randompark]

AWSOME

[NurdRage]

Thx! =)

[Linziosis]

Awesome n_n

[NurdRage]

thanks!

[FrostyEagle7]

Sweet. :)

[NurdRage]

thanks!

[WanderingConfused]

Thats awsome as always

[NurdRage]

thx!

[xRazr567x]

how much does a silver bar cost approx

[NurdRage]

Hard to say, prices vary depending on economy and shipping costs. Your best bet is to look in Ebay for silver bars. That will give you a rough idea how much it'll cost.

[polejay]

cool video again nurd rage!!! are u ever gonna shw ur real voice ;)

[NurdRage]

I'd rather people pay more attention to the videos than to me.

[polejay]

haha i was kidding

[NurdRage]

heheh :)

[andrefonseca12]

Nice! :D

Will try this at home! Just need to buy a silver bar. ;)

[NurdRage]

Good luck :D