Unit 4: Chemical Reactions

Topic 4.1 Introducttion to Reactions

• Movies of chemical reactions The movies show several examples of chemical reactions that can be classified as formation reactions, oxidation-reduction reactions, and precipitation reactions.

• More movies of chemical reactions The movies show additional examples of chemical reactions that can be classified as formation reactions or oxidation-reduction reactions.

Topic 4.2 Net Ionic Equations

• Lecture Notes for precipitation reactions ionic and net ionic equations Lecture notes on writing/recognizing precipitation reactions in a molecular form, (total) ionic equation form and net ionic equation form.

• Lecture Notes for neutralization reactions ionic and net ionic equations Lecture notes on writing/recognizing neutralization reactions in a molecular form, (total) ionic equation form and net ionic equation form.

Topic 4.3 Representations of Reactions

• Introduction to particulate level diagrams activity This activity allows students to organize a set of containers depicting matter at the particulate level. This activity is a good first day of the semester activity. Here are the answers to this activity.

Topic 4.4 Physical and Chemical Changes

• Movies of physical changes The movie shows an example of a physical change and an example of an ambiguous change.

Topic 4.5 Stoichiometry

• Introduction to ICE tables in stoichiometry calculations. This activity leads introduces students to particulate level diagrams of a chemical reaction and then uses ICE tables to organize all of the Initial, Change and Ending amount in the reaction. Here are the answers to this activity.

Topic 4.6 Introduction to Titrations

Topic 4.7 Types of Chemical Reactions

Topic 4.8 Introduction to Acid-Base Reactions

• Activity - Bronsted-Lowry Acid/Base Theory This activity covers Bronsted-Lowry acid/base theory using several questions and examples.

• Lecture Notes - Neutralization Reactions These lecture notes introduce the neutralization reactions. A table of common acids and bases are provided along with several examples of writing balanced molecular, ionic and net ionic equations for different examples of neutralization reactions.

Topic 4.9 Oxidation-Reduction (Redox) Reactions

• Activity - Metal and Metal Ion Reactivity This activity uses a new simulation available from the American Association of Chemistry Teachers to invent an Activity Series for eight metals and hydrogen gas H₂.