| 碳 |
tàn suān qīng ǎn | ammonium bicarbonate |
| 碳 |
tàn | carbon (chemistry) |
| 碳 |
tàn suān | carbonic acid |
| 酸 |
suān | sour / tart / sick at heart / grieved / sore / aching / pedantic / impractical / to make sarcastic remarks about sb / an acid |
| 氢 |
qīng | hydrogen (chemistry) |
| 铵 |
ǎn | ammonium |