1. Pure distilled water gives a pH scale reading equal to _______.   7   0   1   14   Hint Half-n-half Clue   2. Sulfuric acid turns red litmus paper blue.   True   False   3. Methyl orange solution turns bases _______.   orange   pink   yellow   colorless   Half-n-half Clue   4. Phenolphthalein solution turns bases _______.   pink   orange   colorless   yellow   Half-n-half Clue   5. Addition of phenolphthalein solution to an acid results in no color change.   True   False   6. Methyl orange solution turns acids _______.   yellow   orange   colorless   pink   Half-n-half Clue   7. Bromothymol blue solution turns acids _______.   yellow   orange   blue   colorless   Half-n-half Clue