Featured in PASCO’s Physics through Inquiry Teacher Guide

Physics through Inquiry Teacher Guide

(PS-2873C)

Features over 30 inquiry based labs covering the core topic areas of mechanics, electricity and magnetism, optics, thermodynamics and more.

Heat of vaporization

Lab Summary

Use a temperature sensor to develop a better understanding of the phase change from gas to liquid.

Theory

This experiment enhances students' understanding of energy transfer in the form of heat, allowing them to:

  • Develop a better understanding of the phase change from gas to liquid.
  • Use a graph of temperature verses time to understand the connection between heat energy transfer and phase change.
  • Determine the latent heat of vaporization of water.

Method

Students gain experience using the following procedures:

  • Assembling an apparatus to isolate and measure the temperature change that results from condensing water vapor into liquid water.
  • Analyzing a graph of temperature versus time to determine a change in temperature.
  • Calculating the heat of vaporization of water based on energy transfer in the form of heat.

Sensors / Equipment Used:

PASPORT Absolute Pressure/Temperature Sensor

(PS-2146)

Designed for ideal gas law allowing both absolute pressure and temperature measurement. For use with PASPORT Interfaces.

Materials Used:

Balance

Calorimetry cup

Water trap

Steam generator

Stir station (optional)

Tubing, 1/4 inch² inner diameter ~ 0.5 m

Clip or rigid U-shaped tube

Scissors

Stirring rod (optional)

Tape (optional) ~ 1 roll

Water ~ 1 L

The Associated Bundle:

Physics Standard Sensor Bundle

(PS-2931B)

Contains the probeware needed to perform all 37 lab activities in the Physics through Inquiry lab manual.

Interface Required

This experiment may require software and an interface for data collection.