1. Module 3

1.25. Page 7

Lesson 4

Module 3—Electrochemical Reactions

Lesson Summary

 

In Lesson 4 you considered the following questions:

  • What are oxidations numbers and how can they be used to understand redox reactions?
  • What factors cause corrosion?
  • How can corrosion be prevented?

Corrosion is a complex process involving more than one redox reaction. You must pay careful attention to the charge on the iron ion in order to understand the steps in the corrosion process. For other species, oxidation numbers provide insight into the chemical change of the species and the involvement of redox processes.

 

Lesson Glossary

 

alloy: a homogeneous mixture of two or more metals or of a metal and a metalloid