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.
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.
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.
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.
Yes, gas bubbles indicate the solutions molecules have broken down and reformed, some into a new molecule, others into a gas.
Bubbles are chemical change
yes
In and of itself, no. Both chemical and physical changes can create bubbles.
It is a physical change.
a physical change or a chemical change
The bubbles themselves are physical. What caused them might have been a physical change or a chemical change; it's impossible to say without more information.
Chemical
No. That is a physical change of the liquid water turning to gas (steam)
physical=A physical change does not produce a new substance. chemical= A chemical change produces a new substance. u now have the answer........
In and of itself, no. Both chemical and physical changes can create bubbles.
It is a physical change.
a physical change or a chemical change
a physical change or a chemical change
Water bubble is a substance not a change.
The bubbles themselves are physical. What caused them might have been a physical change or a chemical change; it's impossible to say without more information.
It is a chemical change.
Chemical
Physical. If a substance releases bubbles, it is converting some of its liquid into a gaseous state. The chemical properties do not change, only its present state. A most common physical change is that of watching ice melt in glass of water.
it is a chemical change