How to pull water to pieces
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- čas přidán 31. 07. 2019
- We call water 'H2O' but why? Rob explains and shows you how to take water molecules apart and discover the truth for yourself, and there is a short puzzle at the end.
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Anyone else confused as to why Rob pored the water from one glass to another for no real reason?
They do that in all experiments XD
Extra time
to illustrate that the water needs to go into a clean, clear glass
@@kjohn5224 but
@@Jerbins if he says it he's gotta do it.
Parents keeping their kids home from school need to know about this CZcams channel!
Kids must get a teacher like him....
There are teachers, and then there are teachers. If there were more teachers like Rob and Deane, we wouldn't have the problems we have today of how to get kids to learn.
@@macf4426 yea.... Mejority of the place teaching confined as a training to win useless exams without focusing on the real life use of subjects.
I wish I had this video back in my IGCSE days cause I had a HARD TIME with electrolysis
im 34 years old, and i find this fascinating as if i was a 10 yr old. take me back to the 90s :(
Many thanks - Rob
I did the experiment as a 7th grader, took a bowl of water, added a couple of handful of salt. Then took a power cable, sliced off the plastic from both sides, attached it to the wall socket in one side, dipped the other side into the bowl, and then... turned the switch on. 😃
A big and very brief "brooop" sound, felt like a shockwave, all the water disappeared at once, and no electricity at home for several hours 😂
Turned out, the main fuse saved the neighborhood by dissolving itself for my incompetence 😂
The only good thing I did that day was, not touching the bowl while I turned the switch on. In that case, I wouldn't be here, alive, to write this.
So, kids, please do not do this without having an adult to supervise your work.
Not necessarily you would die from it, but still its better anyway that you didn't suffer the shock...
Sounds fun, do it again and film it. Post it on Tiktok with some challenge and watch neighborhood blackout in random countries.
idk what kind of sockets you have (/had) but 220-230V wont kill you, it will barely scratch your skin. I've been electrocuted by wall socket several times and nothing really happened to me. Tbh I've electrocuted myself on purpose a few times cause I like the feeling 🤣
@@Dzdzovnica bro wth
I did this with a car battery some jumper cables and the pool in the back yard. Thinking back I should have told grandma to get out first.
Savage
They don't make shows like this anymore, I feel old.
Literally the only time I’ve ever seen kids be given instructions to electrocute water. 😁
Good ole days
They don't have chemistry class in high school anymore? We did this and got to light the hydrogen on fire too.
You cant electrocute water.
This show is needed now more than ever.
The hydrogen molecules in water are at 104.5 degrees from each other, not 180. This is a consequence of the electron configuration and how the valence electrons are shared. This angle leads to water being a polarized molecule with the hydrogen atoms being electropositive and the oxygen corner being electronegative. This polarization gives water its many exceptional properties. It is a good solvant, has strong surface tension, and a wide range of temperatures at which it remains liquid. These facts make it essential to the existence of life.
Did he say anywhere that the angle is 180 degrees? Didn't think so.
@@Kalumbatsch The model at the beginning would make you think it is.
It's a kid's show for fuck sake
@@kinnikuzero Your life is a kid's show.
@@0ffspringfan It's flat. You could be looking at it edge-on. And none of that is the point here anyway.
I'm not convinced there's no coincidence with this youtube recommendation, my dry mouth and the video being 420 in length
Teaching kids to science like Mark Watney
That first glass looked filthy
Now kids do not try this with a car battery when smoking a cigarette.. :)
This year I saw how audibly harmful adding oxygen to helium is, or liquid oxygen to carpet is as it supercharges the ability of something to conduct flames.
Though I studied a fair bit about hydrogen, I never put it together... 2 parts flamable gas to 1 part accelerant makes a vital liqiid to survive and one able to quench flames...
That sounds quite the contradiction
Sorry, what?
@@Kalumbatsch adding oxygen to a helium balloon and lighting it makes a loud boom. In a mega balloon, it can cause ear damage.
Hydrogen motors are dound much safer as the tanks are way more resiliant than a car's gas tank. And when damaged, they leak back into the air, disipating to an oversaturated amount, unlike gas that pools under the car and can make the car explode.
That said, a hydrogen balloon will explode with a spark or flame.
Oxygen makes burning materials burn much more efficiently, as it feeds the flames. Liquid oxygen on carpet, when added friction, will make the carpet burn up in seconds.
Anything else confusing?
@@Maninawig "adding oxygen to a helium balloon and lighting it makes a loud boom."
No, it doesn't. Helium is a noble gas, it doesn't react with oxygen. You're confusing hydrogen and helium.
@@Kalumbatsch you are right in stating that helium cannot molecularly bond to oxygen if a balloon was diluted mixed 50:50, the same would be said with Hydrogen, as they would require additional physical reaction to seperate the stable O2 into O1.
However, what I am talking about isn't related to molecular bonds but chemical traits of the elements. Both hydrogen and Helium share the trait of being flamable. In other words they go BOOM and the flames are born. However, Oxygen is not flamable, but it is annoxidizer. In other words, it won't light on fire or go BOOM, but it does make flames brighter by feeding itself to the flame.
Thus, by having a balloon mostly-filled with any combustable gas and partly filled with an oxidizing agent (oxygen being the purest form), then your boom is amplified.
If you are referring to the Hindenburg, then it's important to know that the same thing would happen if it was filled with helium... The problem is that the painter chose to ignore the warnings and use a cheaper paint that, with the movement of the blimp, created enough friction to spark a flame.
@@Maninawig "Both hydrogen and Helium share the trait of being flamable"
No. That's bullshit. It's 100% wrong. Helium doesn't burn. As to the rest of your word salad, you have no idea what you're talking about.
🤔So did you ever invent a 4 handed Rob/Deane Hybrid for attaching foil to batteries 😂
this is the best science show on the youtoubes. i only wish that the lessons were longer and deeper.
maybe this sounds unserious or in reverse overly serious but I would love it if you two guys would open up a vlog channel where you just disguss the making of alll your old vids and comment your old vids.
maybe with corrections and modern insight.
Nearest we have come to it is my book 'Curious Recollections - life in the Curiosity Show' which has just been published - Wakefield Press, South Australia. Deane is launching it on September 2 and it has lots of stuff about how we made the show - Rob
I take it the first glass was not clean or clear?
Can't wait to split some bathtub water with a toaster
Gregor Mendel looks pissed that someone shaved one side of his head.
Wow
coilidial silver?
Hydrogen is liquid only at very low temperatures. Oxygen is only liquid at very low temperatures. But when you combine two parts hydrogen and one part oxygen, you don't need very low temperatures for it to be liquid. Weird, huh?
9 volt works a lot better.
aaaaaa now i understand how to pull water to pieces
aww i was a big fan of mettalica
So how can you tell the difference between h2o and h2o2?
If you have equal parts oxygen and hydrogen. Or put some potassium permanganate and will decompose
How come car engines don't run on hydrogen? Maybe we just full the tank with water and it would just exhaust oxygen.
They actually exist, but it's not that simple. The car has an electric cell powered by hydrogen gas and a catalyst cell. The hydrogen tank has to be huge and takes a big portion of the car, so it's not very practical. Also having a huge pressurized cylinder on you the whole time might seem intimidating for many
It doesn't work because the amount of energy you need to put in is about equal to the amount of energy you would get out.
Hydrogen fuel cell cars are totally a thing! They actually exhaust water, because that's what you get when you react hydrogen and oxygen, but yeah, they're a thing! en.m.wikipedia.org/wiki/Fuel_cell_vehicle
Or at least, they could have been a thing. The problem is getting elemental hydrogen in the first place.
Simply put, it takes much more energy to break water apart than what you get out of it when you put water back together.
So either you eat up a LOT of power at the factory to produce hydrogen by electrolysis (the process Rob demonstrated), or you use hydrogen that's produced as a byproduct of natural gas refinement. Neither of those options are very sustainable or environmentally friendly...
That is why the industry* has focused in more recent years on making better batteries so electric and hybrid-electric vehicles can be more viable options; together with addressing the way we produce electricity.
It's not just cars that are burning fossil fuels and contributing to climate change; it's the power plants, too. So the hope is to transition to cleaner energy sources like solar, geothermal, biofuels, wind, and maybe even sustainable fusion reactors within the next decade or so! It's something to get pretty excited about!
*I am, of course, referring to sensible side of industry that wants to keep living on a habitable planet, not the greed-driven oil companies and political interests that are actively fighting against this kind of progress
@@otakuribo climate change doesn't exist
@@user-rg7uz8of9r Not even Trump thinks that. The argument is what's causing it, not whether it's real.
Would it be possible to make small hydrogen bombs to power an engine?
I’ve seen versions of this experiment where they actually harvest the hydrogen gas and create a mini fireball with a match, but you would need to do a lot of hydrolysis and waste a lot of batteries to get enough H2 for an engine
2:20 I wonder what would happen if instead of putting opposite electrodes of a battery into the salt water, we instead put the positive and neutral terminals from a wall socket? I think I might have to try this at home :)
That would be VERY dangerous.
I used a 12v car battery. it will produce enough voltage and amperage to separate the atoms a pretty fast rate.
@@cyclenut How should I proceed with my experiment? Safety glass I presume. Any other tips?
@@Rick-the-Swift I did research with google.
>Safety glass = yes.
>Any spark or flame near the gases produced can explode.
>Do it outside in the open, away from any thing that can be set fire, just to be safe.
>Use plastic bottles, ie 2 litter soda or gallon milk jug. No glass.
>Use only battery, no electric from house. 12v car battery is what I used.
I only did it for fun and learning.
Have fun and "Safety first"
wall sockets are alternating current so electrolysis wouldn't work
^
Excellent. One issue though. Hydrogen is not explosive. It just burns very rapidly/
So if the oxygen is dissolving back into the water, and water require quite frigid temperatures to maintain a liquid state, that liquid oxygen should be cold.
The water doesn't need to be cold. The dissolved oxygen is how fish breathe, so think about a tropical river with warmer water, the fish can still breathe it, and the water is not frigid.
Liquid oxygen is certainly very cold, but the oxygen that is dissolved in water is not liquid oxygen, the same way the table salt that Rob sprinkles in is not a liquid either, rather the molecules of sodium chloride (the chemical that is table salt) are separated and spread around the liquid being held in place by similar electric charges to what Rob describes with the battery terminals.
Solvation is a quite detailed topic, I'd suggest reading about it on Wikipedia as a start, and if you are really interested, borrow a high school chemistry textbook from a friend or library to learn more about solutions, solvents and solutes.
@@carneeki the fish breathe through osmosis. Water is oxygen combined with hydrogen. Pure oxygen can not maintain a liquid state above -119 degrees Celsius. You should research before you correct someone. Otherwise you just look dumb.
Gregor Mendel: Darwinist or Creationist?
hang on .. in school I learned they're positioned at an angle of 107 degrees .. not 180 (even though one now could argue, it's just a two dimensional projection where this angle got lost at [which indeed is possible]). otherwise it would seriously alter its physical properties like melting point and such (so, let's rather be "grateful" for exactly this angle, as I was also told in that very school, lol).
LOL, they're not at 107 degrees.........they're 104.5 degrees
@@subaruthug ahhh, that's why it was only awarded second best school in town 💡🤣
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maybe, this is valid on the equator only due to an increase of angular momentum; I'm Santa Claus's son and went to school on the north pole.
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or go check your ruler-it probably shows imperial angles.
Do they even still produce D batteries these days?
Yes! I recently had to buy one for my aunt's antique clock.
@@dujezarkovic2384 That's good to know. I really thought dry cell batteries have gone extinct thanks to rechargeables. But I do know the smaller button batteries used on watches and sometimes on a motherboard are still readily available these days.
@@Cahos_Rahne_Veloza Where do you live? All of these batteries are readily available here.
Can you die if you let the two "rods" touch each other while placing the rubber band?
No, but your hair stands on end.
to put in some more thoughts at the around minute mark where he adds salt to the water (to "ionize" it). to put it very shortly, bluntly, and probably with too low a sophistication: water dissolves metal, metals so conduct electricity quite well (contrary to just water alone). therefore, water that comes into contact with metals becomes conductive. your tap water at home is already quite conductive (as opposed to pure rain water) because it already came into contact with various metals. this night not be totally obvious at a first glance, but our very surface essentially consists of metals. what you tend to call rock, I dare to also call a metal. way more than you think is actually a metal, and so is salt. since we humans adapted to drinking water, we now even need those extra parts in it (which in this case, we then call minerals .. but again, essentially another word for just yet again the same, namely metal). salt is a metal as well (when it dissolves in water, it's quite safe to call it a metal. sugar isn't one, but it only dilutes in water; not dissolves). he only adds the salt essentially to make extra sure the water will be conductive enough for this experiment to succeed (which I haven't seen yet, but can somehow imagine what it'll look like, lol).
So why isn't water flammable? If it's made of hydrogen and oxygen it should explode when in contact with a flame. We should be able to put it straight in the petrol tank and go. Why can't we?
Seconddddd
Firstttt
The wooden gear unexplainably wrap because ox conventionally analyse unlike a malicious angora. careless, abhorrent hope
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