Education Technology

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  • Subject Area

    • Science: Chemistry: Kinetics

  • Author

    Erica Saylor

  • Level

    9-12

  • Activity Time

    5 Days

  • Device
    • TI-83 Plus Family
    • TI-84 Plus
    • TI-84 Plus Silver Edition
  • Applications
  • Accessories

    CBL™/CBL 2™
    Sensor - Temperature
    TI Connectivity Cable

  • Other Materials
    Each station will be equipped with 100 mL graduated cylinder Triple beam balance 3 disposable plastic cups (3 oz size) 25 mL plastic syringe Bottle of dishwashing detergent 1 small box of baking soda Small bottle of vinegar Metal spatula Stirring rod Plastic cafeteria tray for containing the mess Stopwatch or graphing calculator with timer program paper towels As needed, the following materials will be provided if requested. Ice Hot plate 100 mL beaker beaker tongs
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Designing a Reaction Rate Experiment

Published on 07/20/2008

Activity Overview

In this activity, students will design, conduct, and report the outcome of an experiment in which they investigate some factor that affects the rate of reaction between baking soda and vinegar. The dynamic nature of the reaction, coupled with a wide range of possible choices of independent variable, makes this a highly engaging activity. Students will learn the meaning of independent and dependent variable, and gain an understanding of experimental controls.

Before the Activity

Teachers need to put out the necessary equipment and download the timer program onto calculators. Distribute and go over the handout for the project. Students will need one 50 minute class period to conduct the pre-lab activity and plan their experiment.

During the Activity

Students will require between one and two 50-minute class periods to conduct their investigations. Once finished collecting data, the students are to work cooperatively to create a group report. The report must show a graph of the data.

After the Activity

Depending on how many groups are in the class, it will take 1 or 2 class periods to conduct the oral presentations. Ideally, students would project their graphs as a visual aid during the presentation of the findings.