Education Technology

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  • Subject Area

    • Science: Chemistry: Physical Changes

  • Author

    Texas Instruments

  • Level


  • Activity Time

    60 Minutes

  • Device
    • TI-73 Explorer™
  • Software

    TI Connect™

  • Applications
  • Accessories

    CBL™/CBL 2™
    Sensor - Temperature
    TI Connectivity Cable
    TI-GRAPH LINK™ Cable
    Unit-to-Unit link cables

  • Other Materials
      This is Activity 6 from the EXPLORATIONS Book:
      Activities for Middle Grades Science with the CBL 2™ and TI-73.

      The following materials are required for this activity:
    • Three 350 mL beakers
    • Graduated cylinder
    • Timer or watch with second hand
    • Three sugar cubes
    • Water at 5' C, 25' C and 35' C
    • Data Collection and Analysis pages (52-53)
  • Report an Issue

The Effect of Temperature on the Rate of Dissolving

Activity Overview

In this activity, students' will use a Temperature Sensor to collect data and then analyze that data to determine the effect of temperature increases on the rate of dissolving. They will identify temperature as a factor in dissolving rate of reaction.

Before the Activity

  • Connect the Temperature Sensor in channel 1 of the CBL 2
  • Download DataMate™ program
  • See the attached PDF file for detailed instructions for this activity
  • Print pages 49 - 53 from the attached PDF file for your class
  • During the Activity

    Distribute the pages to your class.

  • Complete the Hypothesis section on the Data Collection and Analysis page and predict the effect of water temperature on the dissolving time of a sugar cube

  • Follow the Activity procedures:
  • Place the temperature sensor in the first beaker with water and verify that the temperature is at 25' C
  • Add one sugar cube and start timing
  • Stir constantly
  • When the sugar cube dissolves stop the timer
  • Calculate the time taken to dissolve
  • Repeat the activity with water at 5' C and 35' C
  • Record the time and temperature data
  • Graph the data using the linear regression function
  • After the Activity

    Students' will complete Student Data Collection and Analysis Sheet.

    Review student results

  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary