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Chemistry B

Course Description

This .5 credit course discusses the systematic study of matter, its properties, composition, and changes.

Course Requirements

To earn credit for this course by the deadline, the following requirements must be met:

  • All mastery test modules must either be marked exempt or mastered
  • All modules without mastery tests must be completed, including pretests, posttests, semester tests, and drop box assignments

Time Requirements

This semester course contains 47 modules and is designed to fulfill the state-required 60 contact hours. Students should spend 7.5 hours per week, completing at least 6 module(s) each week of the 8-week program. Each bulleted item in the assignment list below is a module. TIP FOR SUCCESS: It is best to work on your course consistently to allocate time for technical and/or content assistance, if needed.

Grading Scale

An average of all scores on all modules will be calculated to determine a final grade. All modules are equally weighted. There are no + or – grades issued.

A = 90-100%
B = 80-89%
C = 70-79%
D = 60-69% (or 0-69% on post/end of semester tests)
I = Incomplete (course requirements have not been met)


Pretests provide an opportunity to exempt out of modules within the unit based on prior knowledge; the pretests are not included in the final grade. You may take the pretest one time. While you are not required to master modules that have been marked exempt, the unit posttest or end of semester test may contain questions from these modules; therefore, you may choose to master these modules to prepare for the posttests. The grade for a module that has been marked exempt is 100% whether you master it or not.  Not all courses will have pretests.             

Tutorials and General Tips

Most lessons include a tutorial. The purpose of the tutorials is to help prepare students for the mastery tests. This is similar to lessons in traditional brick-and-mortar classrooms. Work in the tutorials will not be graded. If a mastery test is locked, reviewing the entire tutorial will automatically unlock the mastery test and allow you to retake it. The cycle of completing the tutorial to unlock a mastery test can be completed as often as needed until the required minimum 80% score is earned on the mastery test.

Utilize the blue toolbar on the left side of most tutorials. The toolbar options may include helpful resources such as notes, reading tools, calculator, translation, and highlighting options. 

For the Edmentum/PLATO courses, 60 minutes within the same URL such as a tutorial or test, may cause progress to be lost. The best practice is to save and close and then relaunch the activity if the end of the hour is near to be sure work is saved. As the URL or webpage changes, such as moving from one tutorial to a different tutorial, the 60 minute clock is reset.

Mastery Tests

The minimum score required for each mastery test module is 80%. You may take the mastery tests multiple times. To unlock a mastery test, go back through the preceding activities for that module. You have unlimited attempts on the mastery tests, and each mastery test must be mastered or exempt in order to earn credit for the course. Review and retake each mastery test until you have earned at least 80%, but you can continue to retake the test to try to earn 100%. The score for a module that has been marked exempt is 100%.

For any module that does not have a mastery test, all parts of the module must be completed.

Posttests/End of Semester Tests

The score for each posttest or end of semester test will be 0-100%. Each of these scores is factored into your final grade. You may take these tests one time. Not all courses have posttests or end of semester tests.

Assignment List

Each bulleted item below is a module. Each module marked with an asterisk (*) contains a mastery test. To receive credit, you must:

1. Complete all modules

2. AND earn a minimum 80% score on all mastery tests (mastery tests must be retaken to earn the 80% score)

NOTE: An indication of 100% complete in Edmentum/PLATO is NOT a guarantee of credit if the above criteria are not met. If a course shows 100% complete, select the course name then the gold "Not Mastered" to see the mastery tests that must be redone. To unlock a mastery test for another attempt, complete all slides of the tutorial again. If you think you have met all requirements to earn credit for the course, immediately email your advisor for verification.

Unit 1: Solutions

  • Pretest: Solutions
  • The Dissolving Process*
  • Rate of Dissolution*
  • Degrees of Saturation*
  • Expressing Concentration*
  • Dilution and Stoichiometry Calculations*
  • Colligative Properties of a Solution*
  • Post Test: Solutions

Unit 2: Reaction Rates

  • Pretest: Reaction Rates
  • Reaction Rates*
  • Activation Energy*
  • Chemical Equilibrium*
  • Equilibrium Constants*
  • Le Chatelier’s Principle*
  • Rate Law for a Reaction*
  • Post Test: Reaction Rates

Unit 3: Acids and Bases

  • Pretest: Acids and Bases
  • Properties of Acids and Bases*
  • Types of Acids and Bases*
  • The pH Scale*
  • Strong and Weak Acids and Bases*
  • Neutralization Reactions*
  • Titration Calculations*
  • Post Test: Acids and Bases

Unit 4: Energy

  • Pretest: Energy
  • Entropy*
  • Thermochemical Calculations*
  • Energy Diagrams for Reactions*
  • Hess’s Law*
  • The Gibbs Free Energy Equation*
  • Post Test: Energy

Unit 5: Oxidation-Reduction Reactions

  • Pretest: Oxidation-Reduction Reactions
  • Oxidation and Reduction*
  • Redox Reactions*
  • Standard Reduction Potentials*
  • Voltaic and Electrochemical Cells*
  • Standard Cell Potentials*
  • Post Test: Oxidation-Reduction Reactions

Unit 6: Nuclear Chemistry and Biochemistry

  • Pretest: Nuclear Chemistry and Biochemistry
  • Nuclear Forces*
  • Radioactive Decay*
  • Nuclear Fission and Fusion*
  • Hydrocarbons*
  • Organic Functional Groups*
  • Biochemical Molecules*
  • Post Test: Nuclear Chemistry and Biochemistry

End of Semester Test

  • End of Semester Test: Chemistry B