What is combustion? What happens when wood burns? Learn about the chemistry of combustion in this animated explainer. To learn more at science.kqed.org/quest/video/w...
Жүктеу.....
Пікірлер: 43
@fireburnpatterns171410 ай бұрын
Very well explained. Thank you
@KarthikeyanEkambaram-om4wt2 жыл бұрын
You are speaking about time right to burn can we predict that by using any formulas ?
@rayyana7236 жыл бұрын
lol 7k subs but 7 comments and only 62 likes is this fake subscribing or what im just confused
@ramdino504819 күн бұрын
What if we place the environment with vaccum only does the heat generates rapidly
@rustslayer99396 жыл бұрын
good vid thx
@walterpaco89685 жыл бұрын
Thank you This helped me with my projest
@TristanMorrow9 жыл бұрын
Phlogiston! Er, wait... good explanation.
@red627 жыл бұрын
So is it safe to say it, in a way, melts into a vapor?
@quasi-intellecual3790
2 жыл бұрын
Sublimation
@johngabrielestrada21466 жыл бұрын
good day we just want to ask if we can use this video for are educational purpose? thank you :)
@Praecantetia6 жыл бұрын
Got a village on a hill and we get all the chimney smoke down here
@jamese9283
5 жыл бұрын
Where do you live?
@TrixMC
2 жыл бұрын
Oh how?
@TheLostinTheUnknown Жыл бұрын
So, is the complete combustion of wood possible or not?
@jackson1342
Жыл бұрын
Never possible
@saranshmehak96003 жыл бұрын
Thank you this help me in my online class test
@rhodagilles8782 жыл бұрын
this is crezy and its a very long time i wonder what hapoended before
@xiiixlllvlllxiiix
Жыл бұрын
What?
@italiancat37866 жыл бұрын
Why don't woods melt? Like other material plastic, metal, rocks, sand etc
@levielkington1632
5 жыл бұрын
cos its natural stinkbum
@EASYTIGER102 жыл бұрын
What happens if you heat wood to the same temperature as if it was burning, but there's no oxygen? Say it was in a kiln filled with100% nitrogen. What happens to the carbon molecules that are released? How would the wood end up?
@cum1647
2 жыл бұрын
Thats how charcoals are made :)
@user-nm8si5ni4q
7 ай бұрын
it would release carbon monoxide molecules which can end with possible fatality
@mlsgaming_1194
6 ай бұрын
@@user-nm8si5ni4q Carbon monoxide is formed due to insufficient oxygen during combustion, a molecule of carbon monoxide(CO)contains one atom of oxygen but he said what will happen if,"no oxygen is present. "
@ImNotMichealJackson
5 ай бұрын
It would release wood gas or methane i guess
@iqmalhafizi4346
4 ай бұрын
That's a pyrolysis process! Resulted from burning organic substance like wood in absence of oxygen under high temperature would produce solid, liquid and gas products. Char (solid product) is a leftover of the wood with high content of carbon. It is due to the volatile components in the wood are released, and called as the gaseous products which are mostly methane, CO, CO2 (also known as synthetic gas or syngas). Meanwhile, a liquid product is also produced known as tar or pyrolysis oil. It is a complex mixture of phenols, ketones, alcohols and various hydrocarbons. In instance, the burning of wood when there's no oxygen would produce syngas (methane, CO and CO2), char, and tar. syngas and char are usually the most valuable products when we talk about pyrolysis.
@TheSenseiKai4 жыл бұрын
Could you explain the reason why this reaction is not reversible? Why for example ash can't react with something and it's useless.
@TrixMC
2 жыл бұрын
I'm not too sure but I think that is because..... we broke them down to a completely useless and fragile
@d4lna
Жыл бұрын
Because chemical bonds have been broken and new ones have been created, this means that this is a new substance that ISNT reversible
@jp8871 Жыл бұрын
OK but why does it crackle and pop?
@mikeshawbrook-selfreliance
Жыл бұрын
Captured wood gas bubbles expanding and exploding
@iamsiddu4104 жыл бұрын
Thanks baby
@leofrizbonnie3 жыл бұрын
Bad for environment? Maybe if all you consider is the fire, but for the wood to be formed in the first place a plant used carbon dioxide from atmosphere in photosynthesis.. matter isn’t created or destroyed.. kinda a net neutral for the environment in this case. But good vid.
@joshuastephenkingsly
2 жыл бұрын
Wrong. If it releases carbon in the form of CO2 then it's neutral as you say. But due to incomplete combustion all these other toxic gases and PAHs are also created and released which are definitely bad for everyone.
@ameerahmad2507
7 ай бұрын
Underrated comment
@UnderMyPalm
7 ай бұрын
So when I heat my home with local wood that's worse for the environment than electric heat from a coal plant or oil imported from the other side of the world? Nah.
@davidchin55403 жыл бұрын
Awesome I love to burn things
@Daniel-wj8uf4 жыл бұрын
Do you have any less annoying people to narrate the video?
Пікірлер: 43
Very well explained. Thank you
You are speaking about time right to burn can we predict that by using any formulas ?
lol 7k subs but 7 comments and only 62 likes is this fake subscribing or what im just confused
What if we place the environment with vaccum only does the heat generates rapidly
good vid thx
Thank you This helped me with my projest
Phlogiston! Er, wait... good explanation.
So is it safe to say it, in a way, melts into a vapor?
@quasi-intellecual3790
2 жыл бұрын
Sublimation
good day we just want to ask if we can use this video for are educational purpose? thank you :)
Got a village on a hill and we get all the chimney smoke down here
@jamese9283
5 жыл бұрын
Where do you live?
@TrixMC
2 жыл бұрын
Oh how?
So, is the complete combustion of wood possible or not?
@jackson1342
Жыл бұрын
Never possible
Thank you this help me in my online class test
this is crezy and its a very long time i wonder what hapoended before
@xiiixlllvlllxiiix
Жыл бұрын
What?
Why don't woods melt? Like other material plastic, metal, rocks, sand etc
@levielkington1632
5 жыл бұрын
cos its natural stinkbum
What happens if you heat wood to the same temperature as if it was burning, but there's no oxygen? Say it was in a kiln filled with100% nitrogen. What happens to the carbon molecules that are released? How would the wood end up?
@cum1647
2 жыл бұрын
Thats how charcoals are made :)
@user-nm8si5ni4q
7 ай бұрын
it would release carbon monoxide molecules which can end with possible fatality
@mlsgaming_1194
6 ай бұрын
@@user-nm8si5ni4q Carbon monoxide is formed due to insufficient oxygen during combustion, a molecule of carbon monoxide(CO)contains one atom of oxygen but he said what will happen if,"no oxygen is present. "
@ImNotMichealJackson
5 ай бұрын
It would release wood gas or methane i guess
@iqmalhafizi4346
4 ай бұрын
That's a pyrolysis process! Resulted from burning organic substance like wood in absence of oxygen under high temperature would produce solid, liquid and gas products. Char (solid product) is a leftover of the wood with high content of carbon. It is due to the volatile components in the wood are released, and called as the gaseous products which are mostly methane, CO, CO2 (also known as synthetic gas or syngas). Meanwhile, a liquid product is also produced known as tar or pyrolysis oil. It is a complex mixture of phenols, ketones, alcohols and various hydrocarbons. In instance, the burning of wood when there's no oxygen would produce syngas (methane, CO and CO2), char, and tar. syngas and char are usually the most valuable products when we talk about pyrolysis.
Could you explain the reason why this reaction is not reversible? Why for example ash can't react with something and it's useless.
@TrixMC
2 жыл бұрын
I'm not too sure but I think that is because..... we broke them down to a completely useless and fragile
@d4lna
Жыл бұрын
Because chemical bonds have been broken and new ones have been created, this means that this is a new substance that ISNT reversible
OK but why does it crackle and pop?
@mikeshawbrook-selfreliance
Жыл бұрын
Captured wood gas bubbles expanding and exploding
Thanks baby
Bad for environment? Maybe if all you consider is the fire, but for the wood to be formed in the first place a plant used carbon dioxide from atmosphere in photosynthesis.. matter isn’t created or destroyed.. kinda a net neutral for the environment in this case. But good vid.
@joshuastephenkingsly
2 жыл бұрын
Wrong. If it releases carbon in the form of CO2 then it's neutral as you say. But due to incomplete combustion all these other toxic gases and PAHs are also created and released which are definitely bad for everyone.
@ameerahmad2507
7 ай бұрын
Underrated comment
@UnderMyPalm
7 ай бұрын
So when I heat my home with local wood that's worse for the environment than electric heat from a coal plant or oil imported from the other side of the world? Nah.
Awesome I love to burn things
Do you have any less annoying people to narrate the video?
Pretty bad explanation.