Lesson 1.2.2

Lesson 2 - The Gain and Loss of Electrons

Get Focused

Electrons are shared or exchanged during chemical reactions. The re-positioning of electrons can either liberate or require energy. In this lesson we will investigate the gain and loss of electrons in redox reactions.

Consider the following essential questions as you complete Lesson 2:

  • What is oxidation ?
  • What is reduction ?
  • Can a redox reaction have oxidation without reduction or vice versa ?
  • What does the acronym LEO GER mean

Vocabulary

Below is a link to the Science 20 Glossary. Make sure you can identify and define the terms within the glossary that correspond with this lesson.

Science 20 Glossary

 

Explore

Click the link below to explore the content for this lesson.

Lesson 2 Content Link

Read

Read pages 69 - 75 in your Science 20 textbook.

Topic 2.2 Text

Video Link Watch and Listen

 

Self Check

Try the applying concepts questions on page 75 of your Science 20 textbook.

Reflect and Connect

Identify one redox reaction that you rely on every day. Post your example to the discussion forum.

 

Module 1: Lesson 2 Assignment.

Once you have completed all of the learning activities for this lesson, you can complete the online assignment.

Sci20 1.2.2 online assignment

Lesson Summary

In this lesson you you learned about oxidation and reduction and the exchange of electrons in chemical reactions.

Lesson 3 will look at the electrical reactivity of metals.