14.2 – Determining the Latent Heat of Fusion and Vaporisation (Leaving Cert Physics): Flashcards

Energy to change 1 kg ice at 0°C to water at 0°C

Energy to change 1 kg water at 100°C to steam at 100°C

Heat lost = heat gained (conservation of energy)

Hidden - no temperature change during phase change

To remove surface water that hasn't undergone phase change

5°C below room temperature

Steam releases extra latent heat energy when condensing

Ensures only steam (not water droplets) enters calorimeter

About 12°C

Use insulation, polish calorimeter, use lid

To ensure it's at same temp throughout and reaches 0°C

5°C below room temperature

To ensure uniform temperature distribution

0.1°C intervals