Superheating

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Abby Ellstrom 1I
Posts: 53
Joined: Fri Sep 29, 2017 7:04 am

Superheating

Postby Abby Ellstrom 1I » Thu Jan 11, 2018 6:29 pm

What causes a substance to superheat or supercool? Is this common?

Sammy Thatipelli 1B
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Joined: Thu Jul 27, 2017 3:01 am
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Re: Superheating

Postby Sammy Thatipelli 1B » Thu Jan 11, 2018 9:30 pm

When a gas or vapor is above its boiling point, it is said to be superheated. Supercooling is the melting of a solid above its freezing point which is very difficult because most times, the solid will almost always melt at the same temperature for a given pressure.

Jimmy Zhang Dis 1K
Posts: 30
Joined: Fri Sep 29, 2017 7:05 am

Re: Superheating

Postby Jimmy Zhang Dis 1K » Thu Jan 11, 2018 10:35 pm

Superheating, or boiling delay occurs when a liquid is heated past its boiling point without actually boiling. This normally only occurs in homogeneous substances.

Matthew Lin 2C
Posts: 30
Joined: Fri Sep 29, 2017 7:06 am

Re: Superheating

Postby Matthew Lin 2C » Thu Jan 11, 2018 10:37 pm

I don't think superheating or supercooling is very common, but there are multiple different variables that can cause them to happen. One example of superheating is how when you microwave water in a glass bowl, the temperature must be greater than 100 degrees C in order for the water to boil. This is because containers with a smooth surface and the relatively static heating environment inside a microwave oven prevent steam bubbles from forming.

Juanyi Tan 2K
Posts: 33
Joined: Fri Sep 29, 2017 7:05 am

Re: Superheating

Postby Juanyi Tan 2K » Thu Jan 11, 2018 10:45 pm

Hi Abby! What I learn is that superheating describes the phenomenon when a liquid is heated to a temperature above its boiling point,without boiling and vaporizing. When the temperature of a liquid is below the freezing point but the liquid doesn't become solid, this phenomenon is called supercooling. Both situations are very rare.

Sarah Clemens 1B
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Joined: Fri Sep 29, 2017 7:03 am

Re: Superheating

Postby Sarah Clemens 1B » Sun Jan 28, 2018 8:02 pm

Nice question. Superheating is when something goes over its boiling point without actually boiling!

Bansi Amin 1D
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Joined: Fri Sep 29, 2017 7:05 am
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Re: Superheating

Postby Bansi Amin 1D » Sun Jan 28, 2018 9:24 pm

Are there any other examples of superheating besides the microwave one?


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