An experiment is performed in which a crystalline substance is added to a beaker filled with room temperature water. The following observations are made: I. The crystals dissolve

II. A precipitate is formed.

III. The bottom of the beaker feels warm to the touch.

IV. Bubbles begin forming within the water.

All of the observations are evidence of a chemical change EXCEPT -

Group of answer choices

I.

II.

III.

IV.