# Intro to Integrated Rate Law with 2 hands on activities for AP Chemistry

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This is how I introduce my AP Chemistry students to the integrated rate law during our Kinetics unit. Students have a hard time understanding how the equations fit the actual data and this is a hands-on introduction that then makes the notes, and using the equations, much easier for students to grasp.

This download includes 2 activities, which I have students do on consecutive days, before I lecture about the integrated rate law.

The first activity is a simple lab - burning of a candle. Students use mass data to determine the rate and then the rate law using the differential rate law. They then see how this rate law can be found using the three graphs of the integrated rate law and answer questions about the concepts of a zero order reaction.

The second activity is a common nuclear chem lab - half life of M&Ms - adjusted to be a guided intro to the integrated rate law, with guided questions that allow students to wrestle with the data, graphs, and formulas first, before being taught via lecture. They get to see how the answer they get by using the equation matches the answer they got during the lab itself. It makes the entire process of learning the integrated rate law more tangible and meaningful.

This is used as an introduction to the Integrated Rate Law. Students should have already have knowledge of what rate order means. I do this activity after they have learned how to write a rate law and the differences between zero order, first order, and second order reactions.

The instructions and questions for the second activity are visible under the "Preview" so you can verify that this will be an excellent activity for your students.

This activity matches the following AP Chemistry Learning Objectives:

· LO 4.2 – The student is able to analyze concentration versus time data to determine the rate law for a zeroth-, first-, or second-order reaction.

· LO 4.3 – The student is able to connect the half-life of a reaction to the rate constant of a first-order reaction and justify the use of this relation in terms of the reaction being a first-order reaction.

Included in the purchase is sample data for both activities and answers to the guided questions based on the sample data.

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Teaching Duration
2 hours
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