Latent Heat
Physics ⇒ Heat and Thermodynamics
Latent Heat starts at 8 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Latent Heat.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
Describe what happens to the energy supplied to a substance during its boiling process.
Describe what happens to the temperature of a substance as it undergoes a phase change at constant pressure.
Explain the difference between latent heat of fusion and latent heat of vaporization.
Explain why sweating cools the body in terms of latent heat.
The latent heat of fusion of ice is approximately (1) 80 J/kg (2) 334,000 J/kg (3) 2260 J/kg (4) 100,000 J/kg
Which of the following best describes why temperature does not change during a phase change? (1) Heat is used to increase kinetic energy (2) Heat is used to break intermolecular bonds (3) Heat is lost to the surroundings (4) Heat is used to increase pressure
Which of the following best explains why steam burns are more severe than boiling water burns? (1) Steam has a higher temperature (2) Steam contains more latent heat (3) Water is denser (4) Steam is lighter
Which of the following is NOT a phase change that involves latent heat? (1) Melting (2) Boiling (3) Heating (4) Condensation
Fill in the blank: The energy required to change 2 kg of a substance from liquid to gas at its boiling point is given by Q = ________.
Fill in the blank: The formula for calculating the heat required for a phase change is Q = ________ × L.
Fill in the blank: The heat required to convert 1 kg of a solid into liquid at its melting point is called the _________.
Fill in the blank: The latent heat of vaporization of water is ________ J/kg at 100°C.
State whether the following statement is true or false: Latent heat is only involved during temperature changes.
True or False: During the melting of ice at 0°C, the temperature of the ice-water mixture remains constant until all the ice has melted.
True or False: The latent heat of fusion for a substance is always the same, regardless of pressure.
True or False: The latent heat of vaporization is always greater than the latent heat of fusion for the same substance.
