Chemistry has helped improve sports gear dramatically over the years, making your favorite games faster, more exciting and much safer. Part two of four episodes celebrating National Chemistry Week.

Intro theme and various sound effects by Adam Dylewski; music by Kevin MacLeod (incompetech.com); Creative Commons licensed audio from freesound.iua.upf.edu and SoundSnap.com include sounds by Totya, SFX bible, Stuart Duffield, thanvannispen, Justine Angus, UncleSigmund, Shriek Productions, Blastwave FX and SFXsource.