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Carolina Investigations® for AP* Chemistry: Evaluating Lemonade as a Buffer Kit

Item # 840600 Exclusive

Addresses AP Chemistry Big Idea 6 and Learning Objective 6.20. Students evaluate a buffer solution’s buffering capacity and compare the titration curves of a buffer solution and a weak acid. This comparative laboratory exercise can be taught using either a guided or an inquiry activity.

Price

$29.95

This item will ship on or about 8/12/14

  • Aligned with Big Idea 6 and Learning Objective 6.20
  • Emphasizes Science Practices 1, 2, 3, 4, 5, 6, and 7
  • Students evaluate a buffer solution’s buffering capacity and compare the titration curves of a buffer solution and a weak acid. This comparative laboratory exercise can be taught using either a guided or an inquiry activity. In the guided activity, students measure the pH of a citric acid solution titrated with a strong base and plot the titration curve. Students repeat the procedure with a solution prepared from a commercial lemonade mix, which behaves as a buffer and whose primary ingredient is citric acid. Students compare the 2 titration curves, make observations, and address the differences in the curves.

    The inquiry activity allows students to design a procedure to evaluate a commercial lemonade mix’s buffering capacity. It also provides an opportunity for students to present their experimental design and results, reinforcing the practice of communicating findings. Detailed preparation and procedure notes guide the teacher through leading a successful inquiry activity, including a suggested rubric for assessing student performance.

    Both activities include Big Idea assessment questions that follow the AP Chemistry exam free-response question format. In the Big Idea assessment, students predict how changes in acid concentration and the acid-to-conjugate base ratio affect a titration curve’s shape. Students understand that changes in acid concentration and conjugate base increase a solution’s buffering capacity, while changes in the acid-to-conjugate base ratio determine a solution’s pH.

    This kit provides the following AP Chemistry experiences: design a procedure to collect data, analyze data, make predictions about chemical changes, perform a titration, use a pH meter and a buret, and plot a titration curve. The use of a commercial lemonade mix as a buffer helps students make the connection between chemistry and their everyday lives.

       This item is sold and shipped to schools and businesses only. Not available to individuals or residential addresses. For substitution suggestions, please call us at 800.334.5551 (8am to 8pm, ET, Monday-Friday).

    • This item is only available from Carolina Biological Supply Company.
    • This item is sold and shipped to schools and businesses only. Not available to individuals or residential addresses.
    • Save 10% off your online order of $250 or more! To receive the discount, just enter promo code SUMMER during Checkout.
     
    Components Qty Included?
    Lemonade Packets 10 Included
    Citric Acid, 22 g 1 Included
    Sodium Citrate Dihydrate, 20 g 1 Included
    0.1 M Sodium Hydroxide, 1 L 2 Included
    Teacher's Manual and Reproducible Student Guide 1 Included
    Graduated Cylinders, 50 mL 2 Needed, Not included
    Beakers, 150 mL 10 Needed, Not included
    Beakers, 250 mL (or larger for waste) 10 Needed, Not included
    Volumetric Flask, 500 mL 1 Needed, Not included
    Bottle, 500 mL 1 Needed, Not included
    Stir Plates 10 Needed, Not included
    Stir Bars 10 Needed, Not included
    Thin-stemmed Funnels 10 Needed, Not included
    Burets, 50 mL 10 Needed, Not included
    Buret Clamps 10 Needed, Not included
    Ring Stands 10 Needed, Not included
    Wash Bottles of Distilled Water 10 Needed, Not included
    pH Meters 10 Needed, Not included
    Distilled Water, 1 L 1 Needed, Not included


    Carolina Investigations® for AP* Chemistry: Kits That Support the New AP Curriculum

    Carolina Investigations® for AP* Chemistry Kits

    If you are an AP teacher, you go out of your way to help your students perform successfully on the AP Exam. Carolina Investigations® for AP* Chemistry Kits are specifically designed to help you do just that.

    Carolina Investigations® for AP Chemistry kits are designed to help AP teachers help their students achieve exceptional results by:

    • Facilitating the successful integration of inquiry-based learning into the laboratory experience
    • Using teacher-developed and field-tested activities that are designed for the AP classroom
    • Cultivating students’ conceptual understanding of the topics covered, while allowing them to draw upon real-world connections
    • Mirroring the free-response section of the AP Exam using assessment questions focused on the "Big Ideas"
    • Integrating mathematics and analytical thinking through the graphing and interpretation of student-collected data
    • Reinforcing knowledge by connecting concepts to students’ lives
    • Minimizing teacher prep and cleanup time

    Carolina Biological Supply Company: Supporting AP for Over 25 Years

    Carolina is proud to be the only supplier with unique kits and activities that are specifically designed for the new AP curriculum. We will also continue offering the traditional AP labs. In the end, whether you want to use one of our kits, follow a College Board lab, or design your own experiment, Carolina has the products and solutions you need.

    Our staff continually works with real AP teachers to design, develop, and build products that meet AP teachers’ needs. We back all of our products with unparalleled support and our 100% Satisfaction Guarantee.

    Let us help you help your students score a 5 on the AP Exam!



    Carolina Investigations for AP* Chemistry alignment with the Big Ideas






    *AP is a registered trademark of the College Board, which was not involved in the production of, and does not endorse, these products.

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