Reflection: Developing a Conceptual Understanding Limiting Reactant, Theoretical Yield, and Percent Yield - Section 2: Engage


For this lesson I allow students to figure out what a limiting reactant is through the nuts and bolts activity.  By helping student to determine the definition on their own they are much likely to remember it. 

Although this concept seems to be easy, with many of my students being English Language Learners the term limiting doesn't automatically make them think of limiting the reaction or running out so having this experience helps them to remember the term much better.

  Discovery of Limiting Reactant
  Developing a Conceptual Understanding: Discovery of Limiting Reactant
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Limiting Reactant, Theoretical Yield, and Percent Yield

Unit 4: Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review
Lesson 1 of 7

Objective: Students will be able to distinguish limiting versus excess reactants in a chemical reaction as well as calculate percent yield as demonstrated by doing an activity, taking notes, and performing practice questions.

Big Idea: In chemical reactions a limiting recant causes a reaction to stop, while an excess reactant is leftover. Additionally one can calculate percent yield using the experimental value from performing a lab and the theoretical value from calculations.

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24 teachers like this lesson
Science, stoichiometry, Chemical Reactions and Balancing, Chemistry, experimental yield, theoretical yield, percent yield, limiting reactant, excess reactant
  110 minutes
nuts bolts
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