About National Chemistry Week

National Chemistry Week (NCW) is a community-based program of the American Chemical Society (ACS). This annual program unites ACS local sections, student chapters, technical divisions, businesses, schools, and individuals in communicating the importance of chemistry to our quality of life. NCW occurs annually during the third week of October.

National Chemistry Week Logo
National Chemistry Day Parade
National Chemistry Day Parade 1987 (Washington, DC)

The mission of NCW is to reach the public, particularly elementary and secondary school children, with positive messages about chemistry to:

  • Make a positive change in the public's impression of chemistry;
  • Promote a mechanism for effectively mobilizing ACS local sections; and
  • Motivate the ACS membership through local section activities.


NCW is administered by the ACS Office of Science Outreach which is part of the Education Division. The Committee on Community Activities (CCA) serves as the advisory group for outreach programs, and selects and develops the NCW themes and materials.

Past and Future Themes
Celebrating Chemistry Archive

Find Your
Local NCW Coordinator

Visit the NCW Coordinator Lookup
Find Your Local Coordinator Map
Contact icon

Contact the ACS Office of Science Outreach
outreach@acs.org