Question

what do the bubbles and the color change in this demonstration indicate?
they dont indicate anything.
there is a physical change occurring, but no chemical change.
there is a chemical change occurring.
rewatch

Explanation:

In a chemical change, new substances are formed. Bubbles often indicate the release of a gas (a new substance), and a color change can also signify the formation of a new substance. A physical change only alters the state or appearance of a substance without forming a new one. Since bubbles and color change are common signs of new substances being formed, this indicates a chemical change.

Answer:

There is a chemical change occurring.