14.2 – Determining the Latent Heat of Fusion and Vaporisation (Leaving Cert Physics): Quizzes
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15 questions from this quiz
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Practise the questions
15 questions from this quiz
What is the latent heat of fusion?
What is the latent heat of fusion?
Energy to change kg ice at to water
What principle is calorimetry based on?
What principle is calorimetry based on?
Conservation of energy
Why is the term 'latent' used for latent heat?
Why is the term 'latent' used for latent heat?
Energy is absorbed with no temperature change
In the fusion experiment, how far below room temp should the final temperature be?
In the fusion experiment, how far below room temp should the final temperature be?
Not more than below
Why must ice be dried thoroughly before adding to the calorimeter?
Why must ice be dried thoroughly before adding to the calorimeter?
To remove surface water not phase changed
What is the latent heat of vaporisation?
What is the latent heat of vaporisation?
Energy to change kg water to steam at
Why are steam burns more severe than boiling water burns?
Why are steam burns more severe than boiling water burns?
Steam contains more energy than water at
What is the purpose of the steam trap in the vaporisation experiment?
What is the purpose of the steam trap in the vaporisation experiment?
Ensures only steam enters calorimeter
By how much should temperature rise in the vaporisation experiment?
By how much should temperature rise in the vaporisation experiment?
About
What should the starting water temperature be in the vaporisation experiment?
What should the starting water temperature be in the vaporisation experiment?
About below room temperature
How can heat loss to surroundings be minimised?
How can heat loss to surroundings be minimised?
Insulate, polish calorimeter, use a lid
What intervals should the thermometer read to for accurate results?
What intervals should the thermometer read to for accurate results?
intervals
Why must ice be crushed in the fusion experiment?
Why must ice be crushed in the fusion experiment?
To ensure it's at same temp throughout
Why must water be stirred continuously during the experiments?
Why must water be stirred continuously during the experiments?
To ensure uniform temperature distribution
What is the main safety hazard when working with steam?
What is the main safety hazard when working with steam?
Steam is extremely hot and will scald