Give the sign of the electrodes and the reaction that occurs at each for both voltaic and electrolytic cells. Help pls

In voltaic cell, electrons flow from the anode to the cathode. The anode is negative and cathode is positive.

in a electrolytic cell, electrons flow from cathode to the anode. The anode is positive and and cathode is negative.

Explanation:

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

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