The Department of Chemistry and Biochemistry is celebrating the 20th anniversary of National Chemistry Week, Oct. 21 to 27, with an evening of chemistry demonstrations for the public Tuesday.

The event will take place at 8 p.m. in Faraday Hall, Room 143. This year’s theme is “The Many Faces of Chemistry.”

Featured experiments will include a demonstration of kinetics and a demonstration of how nitrate cellulose burns without residue. Ice cream will be made with liquid nitrogen.

Because some of the experiments planned may involve loud noises and produce smoke and/or unpleasant smells, they might not be appropriate for small children. Flash photography will not be permitted.

Parking is available in the NIU parking deck, which is open for general parking after 7 p.m.