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 Challenge students to identify the strength of an acid or a base by its pH level, and review the pH scale with true/false questions in this chemistry printable. Grade: 9 | 10 | 11 | 12 Subjects: Science Chemistry Chemical Mixtures and Solutions + show tags TYPE: Worksheets