Bhoyancy question?

Question

ok i just poured a pint of irn bru and added 2 pro plus in the pint ( caffine tablets) to my surprise when they sank they floated up again and surfaced for 3 seconds and then floated to the bottom for 3 seconds, its like a yoyo but not as quick? why is this and would you class this a s a sinker of a floater?

Answer 1

How do you know it's not spirits that are moving the tablets around?  Don't be so quick to dismiss the possibility of disembodied souls trying to communicate with you through these tablets.

Answer 2

Raisins in a soda? EWWW!

Answer 3

This effect is traditionally demonstrated using raisins in a carbonated beverage. Your pills sank because they are denser than the liquid. However bubbles of carbonation begin to form on its surface, and soon it is buoyed upward by the growing bubbles. Once it surfaces, most bubbles burst, the object sinks, and the cycle repeats.