Download Add to Favorites Add to Folder creative writing children's book activities classroom tools language arts and writing vocabulary Create new folderCREATE NEW FOLDER Share Review pH indicators with the fill-in-the-blank questions in this physical science printable. As a skill challenge, students identify and compare descriptions of an acid and a base. Grade: 9 | 10 | 11 | 12 Subjects: Science Chemistry Chemical Mixtures and Solutions + show tags TYPE: Worksheets