diff --git a/ProblemLibrary/setCH151_LearningChecks/module6-2b.pg b/ProblemLibrary/setCH151_LearningChecks/module6-2b.pg
index 686d55e..96e5dd7 100644
--- a/ProblemLibrary/setCH151_LearningChecks/module6-2b.pg
+++ b/ProblemLibrary/setCH151_LearningChecks/module6-2b.pg
@@ -140,17 +140,17 @@ BEGIN_PGML
 Write the name for the following formulas. 
 
 
-example: `CaF_{2}`  calcium fluoride
+example: [``CaF_{2}``]  calcium fluoride
 
-a. `[$formula[0]]` [____________________]{$answer[0]} 
+a. [``[$formula[0]]``] [____________________]{$answer[0]} 
 
-a. `[$formula[1]]` [____________________]{$answer[1]} 
+a. [``[$formula[1]]``] [____________________]{$answer[1]} 
 
-a. `[$formula[2]]` [____________________]{$answer[2]} 
+a. [``[$formula[2]]``] [____________________]{$answer[2]} 
 
-a. `[$formula[3]]` [____________________]{$answer[3]} 
+a. [``[$formula[3]]``] [____________________]{$answer[3]} 
 
-a. `[$formula[4]]` [____________________]{$answer[4]} 
+a. [``[$formula[4]]``] [____________________]{$answer[4]}