Here's a Question! - Which is Hotter?
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- Опубліковано 2 кві 2023
- A pot of water is placed on a stove. The stove's burner is adjusted so the water is boiling gently. Then, burner is adjusted so the water boils rapidly. When is the water's temperature the greatest?
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#boiling #temperature #boilingpoint #heresaquestion
I was so confused on this one, thanks guys.
I always love these videos, it's amazing to see the evolution through all the years! The vid you posted 12 years ago is my fav and will go down in history as one of the best science lessons.
Which video was that? The one with the Van de Graaff in our auditorium? ua-cam.com/video/ubZuSZYVBng/v-deo.html
@@JeffersonLab YAS
Anyone that took a chemistry class should definitely know this one. I'm a little worried to say this in case it's next weeks, but it's the same for ice water.
If you think about it, it makes sense. If you could get water to be >100C at STP, then the boiling point wouldn't be 100C.
I thought it was a trick question for a second and questioned if I'd ever seen water boil ;-;
I can imagine the thought behind the last choice was like: "hmm... we need to make it four choices, but we've got no idea what the 4th choice could be... alright then, no-boil gang it is!"
Pretty much.
Same.... YA
So if the water is at the temperature of it's boiling point, why doesn't it just all just turn to steam right away? More heat must be added to cause the water molecule to go thru a change of state from a liquid to a gas.
So are you saying that water cannot get hotter than 100 degrees?
Because you need to put more energy into it to get it to boil faster.
No, we aren't saying that water cannot get hotter than 100 degrees. We do say that the boiling point is, in part, dependent on the temperature. Water that's experiencing pressures greater than 1 atmosphere of pressure will have a boiling point greater than 100 degrees. What we are saying is, all else being equal, slowly boiling water and rapidly boiling water boil at the same temperature.
@@JeffersonLab Ok. Thank you for explaining.
C. Boiling water is always 100C
Did you make soup for lunch afterward? ;)
That would have been a good idea.
I hope you guys are still hosting middle school field trips to Jefferson lab.
For the moment, we are going out to them.
@@JeffersonLab that's amazing. Thank you for taking the time to respond. That field trip is part of the reason I went into STEM!
Good to hear!
It's 100 °C in either case. Turning up the burner makes H2O boil faster not get hotter. 😴 Next?