Boston’s Museum of Science celebrates National Chemistry Week with events on Sunday, October 27, 1PM-5PM.  Students (pre-K to 12) and adults can meet scientists and students from all around New England who will lead fun, educational activities around the Museum.  Build your own battery, split water into hydrogen and oxygen, find out why some light bulbs save more energy than others, and test the conductivity of a sports drink.  Dr. Bassam Shakhashiri, professor of chemistry at the University of Wisconsin-Madison, will present exciting demonstrations in the Cahners Theater at 1PM and 4PM.  Admission to museum is required.  (Free tickets to Dr. Shakhashiri’s presentation might still be available on a first-come, first-served basis after advanced reservations closed October 23.)