1. Bromothymol blue solution turns acids _______.   colorless   yellow   blue   orange   Hint Half-n-half Clue   2. A pH scale reading of _______ indicates a weak base.   13   2   6   8   Half-n-half Clue   3. Addition of phenolphthalein solution to an acid results in no color change.   True   False   4. A pH scale reading equal to 7 indicates _______ medium.   a basic   an acidic   a neutral   an unknown   Half-n-half Clue   5. A pH scale reading of less than 7 indicates _______ medium.   a basic   an acidic   an unknown   a neutral   Half-n-half Clue   6. A pH scale reading of 2 indicates a _______.   strong acid   weak base   weak acid   strong base   Half-n-half Clue   7. A pH scale reading of _______ indicates a weak acid.   2   8   13   6   Half-n-half Clue