By Stephen McNeil

Stephen McNeil is an Assistant Professor of Chemistry at the University of British Columbia Okanagan in Kelowna, British Columbia. To date, he has been interviewed on the radio four times: twice he was talking about chemistry, and twice he was talking about pirates. His favourite element is the element of surprise.

A DIALOGUE WITH SARAH, AGED 3: IN WHICH IT IS SHOWN THAT IF YOUR DAD IS A CHEMISTRY PROFESSOR, ASKING “WHY” CAN BE DANGEROUS

SARAH: Daddy, were you in the shower? DAD: Yes, I was in the shower. SARAH: Why? DAD: I was dirty. The shower gets me clean. SARAH: Why? DAD: Why does the shower get me clean? SARAH: Yes. DAD: Because the water washes the dirt away when I use soap. SARAH: Why? DAD: Why do I use soap? SARAH: Yes. DAD: Because the soap grabs the dirt and lets the water wash it off. SARAH: Why? DAD: Why does the soap grab the dirt? SARAH: Yes. DAD: Because soap is a surfactant. SARAH: Why? DAD: Why is soap a surfactant? SARAH:…