What's the Difference Between Steam and Water Vapor? - Mr. Wizard's Quick Quiz 

Oh ok

Calm down Karen he wasn't exactly waving it around😂 Talk about drama queen. I do agree some gloves may have been more appropriate but no need to exaggerate this sensible young mans control of the heater lol

Yes ... _calm down Karen_

Yes ooo ❤️

The 80s were a more sensible time when children and grown ups alike were more mature, understood self-responsibility, and believed that treating kids like hot-house flowers and shielding them from Truth and Risk would only stunt their growth and encourage mentally weak - if not mentally ill - children. And they were Absolutely Right.

*turns into jacksepticeye* SCREW U BILLY

Jk not relly

They call it Steam but it's actually wallet vapor, because your money's gone.

@@Decubitus what lol

how much did you pay for quick quiz by MrWizardStudios

This explanation is either wrong or incomplete. The water is converting to a gas and absorbing heat like crazy while doing it. Boiling/evaporating are damn near the exact same process. It’s just water is weird and surface tension is weird. It’s changing state from a liquid to a gas. Full stop. That phase change absorbs heat. That’s how sweat cools us down. We have to have water boil off our skin or sweat couldn’t cool us down.

@TheWonderOfClouds This might be a dumb question but how does the air hold water vapor when its far below its saturation temperature?

@@ravioli8520 Air holds water vapor at any temperature. It is just the gaseous form of water. When air is at its saturation temperature it means it is holding aas much water vapor as it can... that is 100% saturation. If the air temperature drops any further it stays at 100% saturation but some of the water vapor has to condense out into liquid form... either as cloud, fog, or directly onto surfaces such as with dew. I hope that helps :)

@TheWonderOfClouds in Polish we totaly don't have different words for steam and for vapour. so I am happy I found your explanation. only "You can see steam" keeps me confused. steam = water vapour. just it is so common it has its name in English. to talk about steam with no droplets you use the term "superheated steam".

@@ravioli8520 it is possible because the pressure of water is very very low. you only count the water, as if it was in vacuum. air's pressure does not add to water's pressure when it comes to water properties.

Bravo! Is the video incorrect? I think water vapor is gaseous water. Steam is condensed water vapor.

​@@bsdicemanit's not quite incorrect there's just one word misused. When he says water vapor in the video he's using it to refer to what you would commonly call missed, whereas scientifically it actually is synonymous with steam. the mechanism he explained is correct, it's just that one little word.

Iam sorry but video is very 👺👺👺👺👺👹👹👹👹👹🤖🤖😈🤖👿🎃👿

Water vapour is not in the gaseous phase. It is in liquid form and suspended in the air.

@TheWonderOfCloudsno lol.

@TheWonderOfClouds Steam is in the gaseous phase. Water vapour is in the liquidous phase.

lol 😂

Haha lol

Yeah

And ice is steam in solid form.

^ false. The explanation in the vid is correct. Steam = gas, water vapor = mostly gas with liquid

Ritjert Swaab no, you and the video are wrong. Go to a library and look for a textbook on thermodynamics if you want to verify; water vapor IS an invisible gas.

Well steam doesn't condense because it's over the boiling point. Only once it's cooled down can it condense, and when it has cooled down it is already water vapor.

upload.wikimedia.org/wikipedia/commons/thumb/3/34/Phase-diag2.svg/530px-Phase-diag2.svg.png what this chart doesn't show you is the vapor region is a subset of gas, meaning that all vapor is gas, but not all gas is vapor. when a system containing water is on the line between liquid and vapor, that is what is called "saturated steam" . any hotter for a given pressure is called superheated steam. Now water on the saturation line has a little wiggle room due to latent heat. imagine boiling liquid water at atmospheric pressure. when you add energy via your stove, the water gets hotter and hotter (aka the point on the chart moving straight to the right) until it stops. it reaches boiling point, aka the liquid/vapor line. now the temperature doesn't increase even though you keep adding energy. why? well because the energy is going into turning that water into steam. but at room temperature any steam that is created at boiling point almost immediately hits cooler air and condenses into visible liquid droplets. that is saturated steam that is just barely on the saturation line, that almost immediately just condenses back into liquid. but in a closed container it is a bit different. imagine a closed boiler with water and you keep adding heat. I'm simplifying this a lot but the water will eventually reach boiling point and when it does it starts turning into steam. but the heat stays the same while there is liquid water to turn. this is where the term "vapor quality" comes in. it is a decimal between 0 and 1 describing what fraction of the sample is gaseous. it takes heat to turn the liquid into gas, and as you do so you raise the quality. when the quality gets to 1, you can start moving further into the gaseous region of the phase diagram. when water is there, away from the liquid/vapor line, it is what's called superheated steam. if you wish to turn superheated steam back into water, you have to bring it back down to the vapor/liquid line and then keep cooling it down so the quality goes from 1.0 to 0.0 at which point it will all be (hot) water. anyways, point is, the whispy stuff you see coming from a kettle or a pot is saturated steam with a very very low quality, so much so that any amount cooler (which it gets almost instantly upon hitting the air) results in condensation to a liquid aerosol, aka a cloud. I just gave you far too much info but trust me, the whole "chemical engineering" thing is sortof what I do. TL;DR I'm right and you're not and I'm too tired to find a nicer way to put it.

Semantics

could you please explain what you meant?

@@2023noone Steam is an invisible gas, as said in the video, but so is water vapour. Water vapour is water in the gas phase too. In fact steam IS water vapour, but at a high temperature. What you can SEE is tiny water droplets, formed as the steam cools. It's water in the liquid phase, like in a cloud. A cloud is not water vapour. A cloud is made of small water droplets suspended in the air.

@@KCLBrunel thanks. but your last sentence is a bit confusing for me as I don't have much knowledge in it. you said cloud is not water, but i know that cloud is water droplets suspended in air, near ground it is called fog. So, are you saying that water in room temperature or in high temperature (may be boiling water) is not same as the water droplets, which is the only constituent in the cloud? Let me please, if I understood something wrong.

@@2023noone I said a cloud is not water VAPOUR. It is LIQUID water (droplets). Whether the water is in droplets or is in a bowl of water, it is all the SAME STUFF. It's all LIQUID WATER. Temperature doesn't matter either, as long as it is still a liquid. By the way, whenever you have liquid water you will have SOME water vapour, even in fog. As temperature rises more liquid turns to vapour. Water vapour is similar to liquid water, but the water molecules are more separated and they can move around much more freely than they can in a liquid.

@@KCLBrunel my bad. I forgot to click read more. Then I realised you said the same thing as i mentioned here. BTW, are you a chemical engineer?

steam isnt invisible dumbass...

why dont you do an actual experiment instead of google searching everything?

@@jiovannijones6869 Steam (scientific meaning) sure is invisible!!!