Why should A chemical equation be balanced? A. To show that the reactants are compounds
B. To show metals from nonmetals
C. To show ionic compounds
D. To show the law of conservation of mass

Please answer. No links please!!!

the answer I think is D I hope this is right

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a