Why the soft drink pop when you dropped menthol candy?

Answer 1

The "pop" sound when you drop menthol candy into a soft drink is caused by the rapid release of carbon dioxide gas. The menthol candy, when submerged, disrupts the liquid's surface tension and creates nucleation sites where the dissolved gas can form bubbles. These bubbles quickly rise to the surface, creating the popping sound as they escape from the liquid. This reaction is similar to what happens when you drop any solid into a carbonated beverage.