Versioning History

This page provides a record of edits and changes made to this book since its initial publication in the BC Open Textbook Collection. Whenever edits or updates are made, we make the required changes in the text and provide a record and description of those changes here. If the change is minor, the version number increases by 0.1. However, if the edits involve substantial updates, the version number goes up to the next full number. The files on our website always reflect the most recent version, including the Print on Demand copy.

If you find an error in this book, please fill out the Report an Open Textbook Error form. If the book was produced in partnership with BCcampus, we will contact the author, make the necessary changes, and replace all file types as soon as possible. If we did not produce the book, we will make note of the error on this page and contact the original producer of the textbook. Once we receive the updated files, this Versioning History page will be updated to reflect the edits made.

Version Date Change Details
1.1 September 15, 2014 Book added to the BC Open Textbook Collection.
1.2 May 15, 2017 Links to videos updated. The updated videos are:

  • Chapter 1: Some Basic Definitions – “The Chemical World”
  • Chapter 2: Significant Figures – “Significant Figures”
  • Chapter 2: Converting Units – “Unit Conversion”
  • Chapter 5: Stoichiometry – “Stoichiometry”
  • Chapter 6: Molecular Effusion and Diffusion – “Diffusion”
  • Chapter 12: Acid-Base Titrations – “Titrations”

Known Issues

In the PDF files for this book, there are a few symbols that do not display properly and are replaced with a question mark (?). This is a known issue, and we are working on getting it fixed. Below is a list of these characters and their locations:

PDF page number What is looks like What it should look like
196 2 c pancake mix ? 1 egg ? 1/2 cup milk
227 2 mol of C2H6 ? 7 mol of O2 ? 4 mol of CO2 ? 6 mol of H2O  
227 C5H12 + ?2 → 5CO2 + 6H2O; 4.4 mol C5H12 + O82 → 5CO2 + 6H2O; 4.4 mol
331 q?m × ΔT
581 HC2H3O2 ? H+(aq) + C2H3O2−(aq)  HC2H3O2  H+(aq) + C2H3O2−(aq)
647 H2(g) + Cl2(g) ? 2HCl(g) H2(g) + Cl2(g)  2HCl(g)
861 C4H9Br ? C4H9+ + Br– 

C4H9+ + H2O ? C4H8 + H3O+

 C4H9Br  C4H9+ + Br– 

C4H9+ + H2O  C4H8 + H3O+
885 ΔS? = ∑nS?(products) – ∑mS?(reactants)
895 ΔG?