Chemistry Comes Alive

Larry Zhou, a junior at the Webb Schools, demonstrates the iodine clock reaction for an audience of 12 elementary school students at CFSBC.

Last Sunday, local student Larry Zhou converted the basement of Covina First Southern Baptist Church into a temporary science lab, bringing chemistry to life for twelve elementary and middle school students.

Zhou, the president of Claremont chapter of STEM Inspire, showcased two classic chemical reactions that captivated the children. The main highlight was the iodine clock reaction, where a clear solution unexpectedly turned "pitch black" when placed in hot water.

"The key is to heat up the solution ahead of time" Zhou explained, mentioning that he accidentally added "too much vitamin C" to the initial mix.

The young scientist continued with another demonstration. A simple mixture of baking soda and vinegar produced enough carbon dioxide to inflate a balloon at the container's opening. "Most of them already knew the experiment," Zhou noted, "but I did it anyway for those who haven't seen it yet."

This is Zhou's second successful STEM event at the church this year. Despite his busy schedule with upcoming AP exams and commitments to the tennis team, he remains dedicated to sharing his love for science with younger students.

STEM Inspire's next event is tentatively planned for after the AP testing season. Zhou suggests that future demonstrations might include more "action-based experiments that show immediate results."