Question

question 2 (1 point) two solutions are mixed in a test tube and bubbles form. what does this observation tell you about the reaction? a) one of the products is a gas b) no reaction has taken place c) one of the products is a precipitate d) the contents of the test tube must be boiling

Explanation:

When bubbles form upon mixing two solutions in a test - tube, it indicates that a gas has been produced as a product of the chemical reaction. Precipitates are solid products and their formation is indicated by cloudiness or solid particles in the solution, not bubbles. If no reaction occurred, no new substances including gases would be formed. And boiling is a physical process that requires heating to the boiling point of a substance, which is not indicated here just by the formation of bubbles from a reaction.

Answer:

A. one of the products is a gas