If your child already tried making an antacid or baking
soda rocket, she's probably raring to to more
science experiments that use chemical reactions to make thing
pop.
More to explore Physicists Explain Mentos —
Soda Spray from Scientific American
Science of Mentos — Diet Coke explosions explained from New Scientist The
Science of Coke and Mentos from EepyBird.com Why do Mentos mints foam when you drop them into
soda pop?