i wonder if there is some rule like that for pronunciation about ą.. like where ą changes to a normal 'a' sound.
NEVER as "a"
Polish is a naughty language!! It does not always follow the rules!!!!! ;) I
But it does. Here are the rules for pronouncing ą:
[ą] as the last sound of a word
[om] before [ b], [b'], [p], [p'] example: dąb [d o m p]
[on] before [d], [t], [dz], [c], [dż], [cz] example: kąt [k o n t]
[oń] before [dź], [ć] example: rżnąć [r ż n o ń ć]
[oŋ] before [g], [g'], [k], [k'] example: bąk [b o ŋ k]
[o] before [ł], [l] example: wziął [w ź o ł]