Selina solutions

Selina solutions

Grade 8

Heat Transfer | Short/Long Answer Questions

Question 13

Q13) How is the heat energy supplied to a liquid used during boiling at a fixed temperature?

  • Solution

  • Transcript

Solution:

During boiling, the heat energy supplied is used in increasing the energy of the water molecule, which changes its state from liquid to gaseous.

hello students welcome to Lido learning's question and answer videos let's have a look at this very an interesting question in front of us so how is the heat energy supplied to a liquid used during boiling at a fixed temperature so I have a picture of a liquid boiling over here let's say this is water I am giving a source of heat to it that is I'm heating the water so what is happening the water is boiling at a temperature called the boiling point where the water is getting converted into steam or water vapor as we may call it and this is the gaseous state of water so what is happening over here the liquid is getting converted into gas so this is the process of boiling all of this is happening at a the temperature which is called the boiling point before we move ahead with the question let's look at another important thing this is the arrangement of molecules in liquid as you can see the molecules are a bit far away from each other unlike solids where the molecules are tightly packed here there is some distance between the molecules so the molecules can move about each other or around their positions somewhat energy is there that is the the kinetic energy of the molecules now what happens when we are providing heat to the water molecules right what will happen when I give them heat energy so what happens is during boiling this heat supply is used up by these molecules to increase the energy that is the kinetic the energy of the molecules increases so when we supply heat to the molecules of liquid the kinetic energy increases because this heat is absorbed by the molecules and helps in increasing the energy due to this increase in energy they move rapidly and they move farther away from each other and as a result, they quickly get converted into gaseous form or state as they move further away from each other quickly inversion from liquid to gas takes place as a result during boiling the state of matter changes from liquid to gas at the boiling point, all of this happens at the boiling point so I hope this point was clear that the heat energy is used up to in fact increase the kinetic energy of the molecules and as a result the liquid it changes into gas, they move rapidly they move far away from each other and they get converted into gas so if you have any further questions regarding this please post your comments below thank you

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subject-cta

Question 13

Q13) How is the heat energy supplied to a liquid used during boiling at a fixed temperature?

  • Solution

  • Transcript

Solution:

During boiling, the heat energy supplied is used in increasing the energy of the water molecule, which changes its state from liquid to gaseous.

hello students welcome to Lido learning's question and answer videos let's have a look at this very an interesting question in front of us so how is the heat energy supplied to a liquid used during boiling at a fixed temperature so I have a picture of a liquid boiling over here let's say this is water I am giving a source of heat to it that is I'm heating the water so what is happening the water is boiling at a temperature called the boiling point where the water is getting converted into steam or water vapor as we may call it and this is the gaseous state of water so what is happening over here the liquid is getting converted into gas so this is the process of boiling all of this is happening at a the temperature which is called the boiling point before we move ahead with the question let's look at another important thing this is the arrangement of molecules in liquid as you can see the molecules are a bit far away from each other unlike solids where the molecules are tightly packed here there is some distance between the molecules so the molecules can move about each other or around their positions somewhat energy is there that is the the kinetic energy of the molecules now what happens when we are providing heat to the water molecules right what will happen when I give them heat energy so what happens is during boiling this heat supply is used up by these molecules to increase the energy that is the kinetic the energy of the molecules increases so when we supply heat to the molecules of liquid the kinetic energy increases because this heat is absorbed by the molecules and helps in increasing the energy due to this increase in energy they move rapidly and they move farther away from each other and as a result, they quickly get converted into gaseous form or state as they move further away from each other quickly inversion from liquid to gas takes place as a result during boiling the state of matter changes from liquid to gas at the boiling point, all of this happens at the boiling point so I hope this point was clear that the heat energy is used up to in fact increase the kinetic energy of the molecules and as a result the liquid it changes into gas, they move rapidly they move far away from each other and they get converted into gas so if you have any further questions regarding this please post your comments below thank you

Still have questions? Our expert teachers can help you out

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subject-cta
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