@rhinohelmes Not to make your science teacher look bad, but that's not accurate. CO2 is more dense than oxygen by weight, but not by moles (the 'mole' unit is related to the actual number of molecules). A mole of CO2 does weigh more than a mole of O2, but takes up just about the same amount of space.
@rhinohelmes Actually it happens because the air is, at first, very hot because of the flame. When the flame goes out from lack of oxygen, the air cools down, taking up less space and forcing the water to move and take up the extra space.
The reason this occurs is because the flame heats the air around it causing the molecules to move faster and take up more space, when the cup is placed around it, and the flame runs out of oxygen the flame goes out, and then the air cools causing the molecules to slow down, and take up less space. The water then takes over the space that was gained, and moves into the cup. It has nothing to do with the flame using the last of the oxygen because it gets replaced by CO2
This is only a guess (so don't bite my head off if im wrong). The flame uses the last of the oxygen contained in the cup to continue burning, this creates a low pressure in the cup. Atmospheric pressure then tries to force its way in, but because the water at the base of the cup has created an air tight seal, the pressure difference between the inside and outside of the cup causes the water to raise until pressure (inside the cup) is equal to ambient pressure.
@ajvhinz the candle heats the air in the cup and causes it to expand in a way (this is low air pressure) and move out of the cup when you put the cup down and cool it, the air shrinks up and there is room inside the cup where there isn't any air because the air shrunk and the air pressure outside the cup pushes the water into the cup and causes it to rise in there
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TSSPhotonPhysicsClub 5 months ago
But if the Candle burns for too long it can expand the cup enough to break the glass
CanadianBoyTV 5 months ago
WTF? was that shit?
minikristianX 5 months ago
lol we have a same cup :D:D:D:D:D:D
armi1996msncom 6 months ago
i did that when i was on primary school, it's cool though
MrKattjo 6 months ago
sound like it farted
ninjakiccsass 9 months ago 9
No the water is not being sucked up because there is no such thing as suction
CraigDuffy1998 10 months ago
nice :D
xarkons 10 months ago
by burning oxygen you create CO2 wich is denser than oxygen so it takes in less space. thus the pressure lowers wich causes the water to rise.
at least that's what my science teacher tells me.
(sorry for my bad english, I'm Dutch)
rhinohelmes 11 months ago
@rhinohelmes Not to make your science teacher look bad, but that's not accurate. CO2 is more dense than oxygen by weight, but not by moles (the 'mole' unit is related to the actual number of molecules). A mole of CO2 does weigh more than a mole of O2, but takes up just about the same amount of space.
Cureousful 9 months ago
@rhinohelmes Actually it happens because the air is, at first, very hot because of the flame. When the flame goes out from lack of oxygen, the air cools down, taking up less space and forcing the water to move and take up the extra space.
nfhslugger 8 months ago 5
Awesome!
mayelaine2 1 year ago
The reason this occurs is because the flame heats the air around it causing the molecules to move faster and take up more space, when the cup is placed around it, and the flame runs out of oxygen the flame goes out, and then the air cools causing the molecules to slow down, and take up less space. The water then takes over the space that was gained, and moves into the cup. It has nothing to do with the flame using the last of the oxygen because it gets replaced by CO2
sadfrog1 1 year ago
This is only a guess (so don't bite my head off if im wrong). The flame uses the last of the oxygen contained in the cup to continue burning, this creates a low pressure in the cup. Atmospheric pressure then tries to force its way in, but because the water at the base of the cup has created an air tight seal, the pressure difference between the inside and outside of the cup causes the water to raise until pressure (inside the cup) is equal to ambient pressure.
godklr 1 year ago
i know it
23834896 1 year ago
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doofus299 1 year ago
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. . . .Dude can you gave me a little explanation about that
cause i really need it for my project. . . plzzzz....
ajvhinz 1 year ago
. . . can you explain that. . .? ? ?
ajvhinz 1 year ago
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@ajvhinz the candle heats the air in the cup and causes it to expand in a way (this is low air pressure) and move out of the cup when you put the cup down and cool it, the air shrinks up and there is room inside the cup where there isn't any air because the air shrunk and the air pressure outside the cup pushes the water into the cup and causes it to rise in there
doofus299 1 year ago