Evaluation 4S Specific Latent Heat 1/8

A 0.1 kg block of ice is initially at -10°C. Calculate the total heat energy required to convert it into steam at 100°C.

• 303,500J

• 150,000J

• 265,000J

What is the definition of latent heat?

• Heat is ABSORBED during melting & boiling without change in temperature.

• Heat is ABSORBED during condensation & freezing without change in temperature.

• Heat is RELEASED during condensation & freezing without change in temperature.

• Heat is RELEASED during melting & boiling without change in temperature.

What is the definition of specific latent heat?

• The total amount of heat energy contained within a substance.

• The quantity of heat that is ABSORBED or RELEASED during a change of phase of 1kg of the substance without any change in its temperature.

• Measure of how quickly a substance changes temperature.

Choose the correct statement(s).

• Specific latent heat of fusion, of a substance is the quantity of heat that is ABSORBED during melting of 1kg of the substance without any change in temperature.

• Specific latent heat of fusion, of a substance is the quantity of heat that is ABSORBED during freezing of 1kg of the substance without any change in temperature.

• Specific latent heat of fusion, of a substance is the quantity of heat RELEASED during freezing of 1kg of the substance without any change in temperature.

• 
  Specific latent heat of fusion, of a substance is the quantity of heat RELEASED during melting of 1kg of the substance without any change in temperature.

Choose the correct statement(s).

• Specific latent heat of vaporisation, of a substance is the quantity of heat that is ABSORBED during condensation of 1kg of the substance without any change in temperature.

• Specific latent heat of vaporisation, of a substance is the quantity of heat that is ABSORBED during boiling of 1kg of the substance without any change in temperature.

• Specific latent heat of vaporisation, of a substance is the quantity of heat RELEASED during boiling of 1kg of the substance without any change in temperature.

• Specific latent heat of vaporisation, of a substance is the quantity of heat RELEASED during condensation of 1kg of the substance without any change in temperature.