11/12.1 Heat and Calorimetry | General Physics
Chad provides a lesson on Heat and Calorimetry. The lesson begins with some vocabulary with Chad explaining the definitions of heat, conduction, convection, and radiation. He then provides the definition of specific heat and introduces the associated equation used to calculate the heat associated with temperature changes for a substance , q=mcdT. He then works out of couple of q=mcdT calculations that demonstrate the inverse relationship between specific heat and temperature change.
Chad then introduces the latent heat of fusion and the latent heat of vaporization showing their relevance if a substance is undergoing a phase change and how they can be used to calculate the heat absorbed or released by a substance. He then presents the heating curve for water and shows how to calculate the heat associated with the temperature change of a substance if it also involves a phase change. He then concludes the lesson with a heat calculation involves a hot piece of metal placed in cold water. He shows that the sum of the heats between the two is zero and uses it as the basis for determining the temperature of the mixture when thermal equilibrium is reached.
00:00 Lesson Introduction
00:54 Heat, Conduction, Convection, and Radiation
03:33 Specific Heat and Calorimetry (q=mc delta T)
07:39 q=mc delta T Heat Calculations
09:27 Latent Heat of Fusion and Latent Heat of Vaporization
13:05 Heating Curve
15:27 Heat Calculations Involving Phase Changes
21:34 Heat Calculations Involving Multiple Objects
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Пікірлер: 14
Thank you for your passion for science and helping many get a better grasp of the material. You aided me in passing general physics 1 this fall. God bless you and happy holidays, Chad!
@ChadsPrep
7 ай бұрын
To you as well! Glad to hear the channel helped - keep up the hard work!
Hey Chad. I just want to say thank you so much for your videos in gen gem, orgos. They really helped me a lot in my first year of study. ❤What are you planning to do in the next year? Biochem?
Hey Chad. I am so grateful that I found you. I wanted to ask you something. Can you please make more full length lectures?
@ChadsPrep
8 ай бұрын
Glad you're finding the videos beneficial! Can you give me a little more of an ideal of what you mean when you say "full length" videos?
at 21:27, wouldn't the total heat be 291,900 J or am I doing something wrong?
@ChadsPrep
6 ай бұрын
20,900 + 167,000 + 105,000 = 292,900.... sorry for the confusion :)
at 21:27, wouldn't the total heat be 291,900 J
@Lking123
8 ай бұрын
Yes, that's what I got.
Chad are you at ABRCMS
@ChadsPrep
8 ай бұрын
Is this a conference? In which case probably not :)
15:27 is the time in the video and it is about heat and calorimetry ok. Sir the question is that when we have a phase change in liquid water into a gas at 100 degree celceus T then sir the temperature of water doesn't change until all the water is converted into gas because you said that at phase change adding heat does not change the temperature of the substance it simply breaks the IMFs in water until all of it is converted into a gas? And the temperature of water remain 100 degree celceus until all of it is converted into gas?
@ChadsPrep
5 ай бұрын
If you have gaseous and liquid water present together in a closed container in equilibrium, then as you boil the water, both the liquid and gaseous water will maintain a temperature of 100 degrees Celsius until all of the water is vaporized. But once all the water is in the gaseous phase, the addition of more heat will now cause a rise in the temperature of the gaseous water. Hope this helps!
@user-vl1bk9jh4h
5 ай бұрын
Sir well in open system it doesn't works because you specify only a close container?