Option d lo siento si es incorrecto
Answer:
The salt and sugar as well as the baby power and granulated sugar are the independent variables.
The dependent variable is how it reacts (will it dissolve or not)
Explanation:
A tend line I believe (I am going off the other guy cause they are right.)
Answer: Bubbles, burning, odor, color change, and rusting.
Explanation: Chemical changes are changes to something that is irreversible.
its c with the older down the older it is