1. Methyl orange solution turns bases _______.   yellow   colorless   pink   orange   Hint Half-n-half Clue   2. Methyl orange solution turns acids _______.   pink   orange   yellow   colorless   Half-n-half Clue   3. Addition of phenolphthalein solution to an acid results in no color change.   True   False   4. Sulfuric acid turns red litmus paper blue.   True   False   5. Sodium hydroxide turns red litmus paper blue.   True   False   6. A pH scale reading of _______ indicates a weak acid.   2   6   13   8   Half-n-half Clue   7. Bromothymol blue solution turns acids _______.   orange   colorless   blue   yellow   Half-n-half Clue