Chemical reactions can be recognized by the presence of heat, light, or gas formation. The ultimate outcome for any chemical reaction is the

Question

change from a solid to a liquid.
presence of sound.
formation of a new chemical substance.

Answer 1

The ultimate outcome for any chemical reaction is the formation of a new chemical substance. While physical changes like melting (solid to liquid), heat, light, or gas formation can occur, the defining characteristic of a chemical reaction is the transformation of reactants into products, resulting in new substances with different properties.