Stoichiometry

 

Name: Loree Campbell

 

Title of lesson: Stoichiometry

 

Date of lesson:

              01/11/06 – 01/12/06

Length of lesson:

           2 days

 

Description of the class:

                 Course Title: Chemistry

                 Grade level: Sophomore-Senior

 

Source of the lesson:

                     Joe Michnick (SPR2005)

                     Prentice Hall (Chapter 9)

 

TEKS addressed:

                 112.45. Chemistry

á        Science is a way of learning about the natural world. Students should know how science has built a vast body of changing and increasing knowledge described by physical, mathematical, and conceptual models, and also should know that science may not answer all questions.

á        demonstrate safe practices during field and laboratory investigations

á        collect data and make measurements with precision

á        express and manipulate chemical quantities using scientific conventions and mathematical procedures such as dimensional analysis, scientific notation, and significant figures

á        demonstrate the use of symbols, formulas, and equations in describing interactions of matter such as chemical and nuclear reactions

 

The Lesson:

I.  Overview

Students will explore Stoichiometry with a hands-on lab, introductions to types of problems, worksheets, and quizzes to reinforce the learning.

 

 
 
II.  Performance or learner outcomes

Students will be able to:

á        Calculate the amount of reactants required or product formed in a chemical reaction.

á        Interpret balanced chemical equations in terms of interacting moles, representative particles, masses, and gas volume at STP.

á        Construct mole ratios from balanced chemical equations and apply these ratios in mole-mole stoichiometric calculations.

á        Calculate stoichiometric quantities from balanced chemical equations using units of mole, mass, representative particles, and volumes of gases at STP.

 

             

III. Resources, materials and supplies needed

              Solid Zinc

              Copper (II) Chloride .5 Molar

              250 ml beaker

              250 ml Erlenmeyer flask

              Funnel

              Filter paper

              Weighing scales

 

IV. Supplementary materials, handouts.

           See attached

Five-E Organization

 

Teacher Does                                                       Student Does

Engage: Quantitative Analysis

Learning Experience

Lab uses a single replacement reaction to illustrate lost zinc producing copper.

 

 

Students work on and complete lab

 

     

                                                                 Evaluate

Students using safety

 

Explore: Quantitative Analysis

  Students will use the results of the experiment and with the data collected the students will use Stoichiometry to evaluate their results

       Questions

 

Students use the data obtained to apply towards Stoichiometry.

     Evaluate

Lab write up

 

Explain: types of problems

Students will see that by simply using the given information with the mole ratios from a balanced chemical equation they can

 

       Questions

 

Students actively participate by giving answers as the problems are demonstrated.  Students answer examples on the notes.

 

 

     Evaluate

Worksheets and quizzes

 

 

Extend / Elaborate: Apply to project

Students can now apply their knowledge of Stoichiometry to the project and allow for deeper understanding of the reactions taking place.

 

 

Students see that they can use mole ratios to determine how much product could be made if certain chemicals mix.