Featured in PASCO’s Chemistry through Inquiry Teacher Guide

Chemistry through Inquiry Teacher Guide

(PS-2871C)

Features over 25 inquiry based labs covering the fundamental concepts of lab skills, structure & properties of matter, chemical reactions and more.

Phase Change

Lab Summary

Use a fast response temperature sensor and stainless steel temperature sensor to determine how to add heat to a substance without the temperature of the substance increasing.

Theory

Determine how to add heat to a substance without the temperature of the substance increasing. Through this investigation, students:

  • Determine the effect of a phase change on the temperature of a substance.
  • Explain the difference between heat and temperature.
  • Determine the melting point and boiling point of pure water.

Method

Students conduct the following procedures:

  • Collect temperature data as they freeze water by inserting it into a salt/ice bath until the water freezes and the ices temperature decreases to –6.0 °C.
  • Collect temperature data as they add a constant amount of heat to ice until the ice melts and the temperature of the water rises to 8 °C.
  • Collect temperature data as they add a constant amount of heat to water until it boils for 6 to 8 minutes.

Sensors / Equipment Used:

PASPORT Chemistry Sensor

(PS-2170)

Allows students to measure Temperature, pH/ISE/ORP, Absolute Pressure & Voltage in one sensor. For use with PASPORT Interfaces.

Materials Used:

Hot plate 
Beaker, 150-mL or larger - 2
Graduated cylinder, 10-mL 
Test tube, 10-mm × 100-mm 
Test tube rack 
Ring stand 
Utility clamp 
Stir rod 
Tablespoon 
Distilled (deionized) water - 104 mL
Crushed ice to fill the beaker 
Rock salt - 200 g

Your Bundle Options:

Option 1:

Chemistry Starter Sensor Bundle

(PS-2921)

A sensor bundle specifically designed to get you started using probeware in your chemistry lab. Also: perform 22 Lab Activities from Chemistry through Inquiry teacher guide.

Option 2:

Chemistry Standard Sensor Bundle

(PS-2927C)

Contains the sensors and probes needed to perform all 17 experiments in the Advanced Chemistry Teacher Guide and all 25 labs in the Chemistry through Inquiry Guide.

Interface Required

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