The Charge expression
The Charge expression (expressionOchemEvalCharge) compares the total Charge (that is, the sum of all charges indicated for any atom) of the student’s response to an author-coded value.
- The Charge expression is available for items created with the solutionOchemSkeletal answer type.
- How to add one or more expressions
- How to specify the Grade and Response information
- Use the dropdown menu and text box to set or edit the charge you want to be evaluated in student responses.
"If" condition options and their mathematical equivalentsThe charge value you set or edit in the last text box must be an integer. This value can be either positive or negative, such as 1 or -1.