This egg in vinegar experiment is such a fun science activity for kids! Did you know that you can change regular eggs into bouncy eggs in one simple step?! So cool! Naked Egg The egg in vinegar experiment, also known as a 'naked egg' or 'bouncy egg', is the perfect simple STEM activity. Kids and adults alike will enjoy squeezing and bouncing the naked egg. It's so cool to see an egg staying together without its shell! This chemistry experiment uses basic pantry items and is great for practicing scientific observation. The bouncy egg experiment helps kids understand acid-base reactions