Introduction
In this lesson, students learn how to identify an oxidation reduction reaction. They will learn how to assign oxidation numbers in an oxidation reaction. They will learn how to write an oxidation reaction equation. They will learn how to write half reactions that make up a redox reaction. Students will work in modular simulations and exlets to see what occurs during a redox reaction.Prerequisite Experience
Students need to be able to open and complete modular simulations. Students need to be able to open and complete exlets. Students need to be able to open links and navigate the internet.Teacher Prep Time
The teacher needs to access the simulations and exclets to make sure they are familiar with them. This should take about an hour. The teacher needs about 2 hours of lab time in order to make solutions for the actual physical experiments.Project
The final project for this lesson will be the formal lab write up to follow that actual experiments.Assessment/Grading
Rubric for evaluation of lab write upTime Management Tips
Prepare your solutions several days prior to the lesson.Lesson Plan Details
Engage
Students will discuss what a freshly cut apple, a bicycle fender and a copper penny have in common.
Explore
Students will take a picture of a freshly sliced apple. After one hour, students will take another picture of the same apple slice. Students are to find pictures of a new bicycle fender and a fender exposed to the elements. They may take their own pictures if they choose. Students are to find a new penny and an old penny exposed to the element. They are to describe how they can tell the “new” from the “old”.
Explain
Students are to research oxidation-reduction reactions. They are to explain what chemically occurs with this type of reaction. From this research, which type of reaction do they think occurred with the above three items. What is the evidence do they have as support? They are to conduct modular simulations using different chemistry web sites.
Elaborate
Student groups are to conduct an experiment to show them the process of oxidation/reduction reactions. This includes correctly writing a redox equation based on the materials used in the lab.
Evaluate
Students will write a conclusion and analysis of their lab work which includes a comparison of their results to what actually should have occurred. Did they conduct the experiment correctly? Did their results match what was theorized based on knowledge of the concept? The lab write up is submitted for evaluation.
Extend
Armed with the knowledge of oxidation-reduction reactions, students are to discuss what applications can be applied to the real world.