Introduction to Chemistry: Reactions and Ratios

This is the first part of a two-part introductory course for students with limited or no background in chemistry; in this part of the course, chemical reactions, stoichiometry, the periodic table, periodic trends, nomenclature, and chemical problem solving are emphasized. The goal of the course sequence is to prepare students for further study in chemistry as needed for many science, health, and policy professions. Topics include introductions to atoms, molecules, ions, the periodic table, stoichiometry, and chemical reactions. The pattern of the use of ratios in chemical problem solving will be emphasized.


  • Redesigned the Introduction to Chemistry 11-week MOOC into a two 8-week MOOCs, allowing for a more modular approach as well as providing students with more learning content (1 of 2).
  • In the Spring 2014 semester, Canelas used videos to flip her on-campus organic chemistry course.
  • Awarded a grant by the  Bill and Melinda Gates Foundation to analyze peer-to-peer learning in MOOCs (with Denise Comer).

Media & Publications:



  • Chemistry

Project Uses:


Launch Date:

  • August 2014

View the project