During an experiment, jon exhales through a straw and blows bubbles into a solution. which observation would most likely indicate that a chemical reaction is occurring?
the bubbles disappear into the solution before reaching the surface. the gas forms a layer above the surface of the solution. the solution becomes very stirred up by the bubbles. the solution becomes cloudy with a white solid.

Answer is: The solution becomes cloudy with a white solid.

Balanced chemical reaction:

CO₂(g) + Ca(OH)₂(aq) → CaCO₃(s) + H₂O(l).

CaCO₃ is calcium carbonate, it is white cloudy solid with solubility in water.

Ca(OH)₂ is calcium hydroxide.

CO₂ is carbon (IV) oxide or carbon dioxide, gas that John exhales.

H₂O is water.

The correct answer is D.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates