Why does temperature remain constant during melting and boiling?

Answer: The temperature of a substance remains constant at its melting and boiling points until all the substance melts or boils because, the heat supplied is continuously used up in changing the state of the substance by overcoming the forces of attraction between the particles.

Why does the temperature remain constant while boiling?

When boiling occurs, the more energetic molecules change to a gas, spread out, and form bubbles. … In addition, gas molecules leaving the liquid remove thermal energy from the liquid. Therefore the temperature of the liquid remains constant during boiling.

Why does temperature remain constant during the process of melting of a solid?

temperature remain constant during the melting of a solid because the melting point of the solid has been already reached and now the further heat supplied is absorbred by the substance and store it as potential energy to overcome the force of molecules of the substance and become gas.

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Why does temperature stay the same when melting?

The example we will use here is ice melting into water. Immediately after the molecular bonds in the ice are broken the molecules are moving (vibrating) at the same average speed as before, so their average kinetic energy remains the same, and, thus, their Kelvin temperature remains the same.”

When a gas is compressed at constant temperature What is it called?

1. As pressure increases, volume increases at constant temperature. 2. As pressure increases, volume decreases at constant temperature.

When a gas is compressed at constant temperature.

Llst – l List – II
C. Condensation 3. The change of a liquid to a gas.
D. Vaporisation 4. The change of a solid to a gas

How do you justify that when a body is being heated at melting point the temperature remains constant?

Due to the increase in the kinetic energy of the mole clues the temperature increases. But at melting point heat goes to increase only the potential energy of molecules and hence the temperature remains the same.

Why does the temperature remain unchanged until the entire solid changes into liquid even if we are heating the solid?

The temperature remains unchanged until the entire solid changes into liquid even if we are heating the solid; it is because the heat is used up by the molecules in overcoming the forces of attraction while state of matter is changing from solid to liquid.

What is the effect of temperature on intermolecular space?

On heating, the temperature rises, particles gain energy as the kinetic energy increases, intermolecular space increases as they get separated from each other and force of attraction decreases as the particles go far away from each other.

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Does temperature remain constant during melting and boiling?

Answer: The temperature of a substance remains constant at its melting and boiling points until all the substance melts or boils because, the heat supplied is continuously used up in changing the state of the substance by overcoming the forces of attraction between the particles.

Does the temperature increase during melting?

During melting, energy goes exclusively to changing the phase of a substance; it does not go into changing the temperature of a substance. Hence melting is an isothermal process because a substance stays at the same temperature.

What are the three effects of heat?

State three effects of heat on matter?

  • changes the kinetic energy of the molecules of the matter which increases the temperature of the substance.
  • changes the potential energy between the molecules of the matter which changes the state of the substance.
  • heat may cause the matter to expand.

What happens to the temperature of a gas that is compressed?

Therefore all the atoms which are in the vessel will have picked up speed. This means that when we compress a gas slowly, the temperature of the gas increases.

What happens when gas is compressed?

During compression, the volume (V) of a gas decreases. When this happens, the pressure (P) of the gas increases if the number of moles (n) of gas remains constant. If you keep the pressure constant, reducing the temperature (T) also causes the gas to compress.

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