1. Sodium hydroxide turns red litmus paper blue.   True   False   2. Sulfuric acid turns red litmus paper blue.   True   False   3. Methyl orange solution turns bases _______.   pink   orange   colorless   yellow   Hint Half-n-half Clue   4. A pH scale reading of 13 indicates a _______.   weak base   weak acid   strong base   strong acid   Half-n-half Clue   5. A pH scale reading of _______ indicates a weak acid.   6   8   13   2   Half-n-half Clue   6. A pH scale reading of 2 indicates a _______.   weak base   strong acid   weak acid   strong base   Half-n-half Clue   7. A pH scale reading of less than 7 indicates _______ medium.   an acidic   a basic   a neutral   an unknown   Half-n-half Clue