Module 7
1. Module 7
1.14. Page 3
Module 7—Principles of Chemical Equilibrium
Reflect and Connect
The addition of fluoride to tooth care routines has significantly reduced the amount of tooth decay. You will find fluoride in two main sources: in your toothpaste and in your drinking water. In most cities in Alberta, fluoride is added to the drinking water in tiny doses to help fight tooth decay. In some well water, fluoride is found in much greater concentrations than in treated city water. If a little fluoride is helpful to build tooth enamel, then is more better? If you look at the information on a tube of toothpaste, you will see a warning not to ingest your toothpaste. Although a little fluoride can have excellent benefits, too much fluoride can have negative health effects.
Reflect on the Big Picture
In this lesson you have examined a number of chemical systems, and you have learned about the forward and reverse reactions that describe their dynamic equilibrium. In Lesson 2 you added to your table of equilibrium systems investigated in this module.
RBP 1. Add the systems that you looked at in this lesson to your table.
RBP 2. Add an additional column to your table. Make the heading for the new column “Position of Equilibrium.”
RBP 3. Review all of the systems listed in your table and complete all empty cells.
Save your updated table in your course folder.
Module 7: Lesson 3 Assignment
Submit your completed Module 7: Lesson 3 Assignment to your teacher.