Solid:
* In its pure form, sodium carbonate is a white, crystalline solid.
* It's commonly found in this form as a powder or granules.
Aqueous:
* When dissolved in water, sodium carbonate forms an aqueous solution.
* This solution is often referred to as "soda ash" or "washing soda."
Therefore, to be accurate, you should specify whether you are referring to solid sodium carbonate or an aqueous solution of sodium carbonate.
