The concept of acids, bases and neutral substances is exploring in this lab activity. Follow the story as you help Liam the Leprechaun use chemistry to make a rainbow.Materials used are inexpensive and safe for use in classrooms (with some precautions). Purple (red) cabbage juice is used as and indicator on household liquids (vinegar, water, baking soda and ammonia). You can watch a very short video here: St. Patricks's Day Rainbow ChemistryTeacher instructions are included. Please let me kn