The atoms of the reactant rearrange to form new products.
Because matter cannot be created or destroyed
Barium nitrate and methane (CH4) are both soluble. They both will dissolve in water, however, barium nitrate will dissociate becoming barium 2+ ions and nitrate becoming NO3 1- ions. All nitrates are soluble and dissociate. CH4 is a weak base and does dissolves but doesn't dissociate. So in solubility terms.... they are both equally soluble just one happens to dissociate into its cations and anions. Hope this helps!
Answer: The reactivity of acetic acid with various chemicals (A)
Explanation: engenuity 2021
I have a feeling that #2 is the one.