ACS Meetings & Expositions are where chemistry professionals meet to share ideas and advance scientific and technical knowledge. By attracting thousands of chemical professionals, the meetings provide excellent opportunities for sharing your passion for chemistry, connecting with one of the world’s largest scientific societies, and advancing your career in this ever-changing global economy.ACS Meetings & Expositions are where chemistry professionals meet to share ideas and advance scientific and technical knowledge. By attracting thousands of chemical professionals, the meetings provide excellent opportunities for sharing your passion for chemistry, connecting with one of the world’s largest scientific societies, and advancing your career in this ever-changing global economy.