Question

CaCO3 must be mix with what chemical to make it a foam?

Answer 1

Task:

CaCO₃ must be mix with what chemical to make it a foam?

Answer:

The foam is made by the bubbles of gas in the solution. In our case, the only gas we can get from CaCO₃ is CO₂. We have to add some acid solution (for example HCl) to CaCO₃ to make foam.

The chemical equation for this reaction is

$$\mathrm{CaCO_3} + 2\mathrm{HCl} \rightarrow \mathrm{CaCl_2} + \mathrm{CO_2} + \mathrm{H_2O}$$