5: Seem to be gold, perhaps
9: Water balloon impact sound
12: Example of polluted politics
15: Palindromic preposition
16: The 'S' in CBS: Abbr.
17: Heat-of-the-moment determiner
20: Flowering shrub of the four-o'clock family
25: 'The ___ are these, 'It might have been'' (Whittier)