Simplify the following text for a Grade 11 native English-speaking person.
Original: It possesses a strong ammonium smell , and on digestion with alcohol the carbonate is dissolved and a residue of ammonium bicarbonate is left ; a similar decomposition taking place when the polycarbonate is exposed to air .
Simplified: The ammonium carbonate is exposed to air to decompose any bicarbonate and then is sold .