acid carbonate

Stalagmites: They are formed as the water drops, which carry acid carbonate, fall on the ground under a stalactite.

Potassium bicarbonate (also known as potassium hydrogen carbonate or potassium acid carbonate) is a colorless, odorless, slightly basic, salty substance.

Replies: Combining more carbonic acid than sodium hydroxide makes sodium bicarbonate, also called sodium hydrogen carbonate or sodium acid carbonate.

Erm you'll be able to look at it and say, Well is it a is it an acid and a base, acid alkali, acid metal, acid carbonate.

So that gives you this fits with this pattern acid carbonate they all give a salt apart from the hydrogen one they all give water as well and this one gives a C O two.