Write complete and net ionic equations the reaction that occurs when potassium phosphate (K3PO4) solution is mixed with a calcium nitrate (Ca(NO3)2) solution.

Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?