Megan Chirby

Community Links High School

RET 2009 Teaching Modules

University of Illinois at Chicago

December 12, 2009

RET 2009 Program NSF EEC 0743068

(A. Linninger, PI)

US Air Force concerned about jet fuel pollutants

Oxidation chemistry of major components of JP-8 fuel unknown

Fuel source - Xylene Low O2 flow

Diluted by CO2 and N2 gas

SWBAT define and discuss complete and incomplete combustion

SWBAT predict the products of a combustion reaction

SWBAT report experiment findings in a laboratory report

12.11.53 Understand that in chemical reactions, atoms combine into molecules by means of bonds (e.g., by sharing electrons to form covalent or metallic bonds or by exchanging electrons to form ionic bonds).

12.11.56 Understand that the conservation of atoms in a chemical reaction, as summarized in a balanced chemical equation, leads to the ability to calculate theoretical masses of reactants and products.

12.11.57 Understand how to read, interpret, and balance chemical equations.

11.A.3a Formulate hypotheses that can be tested by collecting data

11.A.3b Conduct scientific experiments that control all but one variable

11.A.3g Report and display the process and results of a scientific investigation

11.B.4f Evaluate the test results based on established criteria, note sources of error and recommend improvements.

13.A.4a Estimate and suggest ways to reduce the degree of risk involved in science activities.

Synthesis Decomposition Single-Displacement Double-Displacement Combustion

Complete Combustion

Incomplete CombustionTest tube with water reacts with CaC2 Acetylene gas formsGas displaces water using pneumatic

trough Incomplete combustion reaction

1 2 3 4

Amount of water/ acetylene gas

Section Exceeds Meets Below

Purpose Meets standards AND hypothesizes combustion products

Correctly defines the purpose of the experiment

Incorrectly defines the purpose of the experiment

Introduction

Meets standards AND provides example of both complete and incomplete combustion

Correctly defines complete and incomplete combustion; correctly balances experiment reactions

Incorrectly defines complete and incomplete combustion; incorrectly balances experiment reactions

Results Meets standards AND describes the relationship between the independent and dependent variable

Provides a table summarizing the results of the experiment

Displays an incorrect or unorganized summary of the results

Conclusions

Meets standards AND suggests specific improvements for future experimentation

States conclusions about the dependent variable as an effect of the independent variable; correctly identifies error sources

Conclusions do not relate the dependent variable to independent variable; incorrectly identifies error sources

Dr. Kenneth Brezinsky Dr. Brad Culbertson Carolyn Fortson and Ilana Green-

Cember UIC Community Links High School NSF RET EEC 0743068 (A. Linninger, PI)