Do bubbles indicate a physical or chemical change?

Answer 1

Not always but they can. They may simply be an indication of a phase change, as when water boils. This is usually counted as a physical change rather than a chemical change. But if you add baking soda to vinegar, you will see bubbles as a result of a chemical change.

Answer 2

Bubbles usually indicate a chemical change because they are often a result of a reaction that creates a gas as a product. This gas being released as bubbles can suggest that new substances are being formed during the chemical reaction.

Answer 3

Yes and no.

Bubbles of carbon dioxide effervescing from a soft drink is a physical change.

Bubbles of carbon dioxide produced as vinegar reacts with baking soda is a chemical change.

Answer 4

I believe Any change to the state of a substance (gas to liquid ad vice versa) is chemical. Air bubbles are a result of a gas being formed from a liquid. Therefor yes, it's a chemical change.

Answer 5

Bubbles indicate either an increase in heat causing one of the reactants to boil or the production of a gas. Both of these are indications of a chemical reaction.

Answer 6

Yes, gas bubbles indicate the solutions molecules have broken down and reformed, some into a new molecule, others into a gas.

Answer 7

Bubbles are chemical change

Answer 8

yes