Articles

    Outreach and Education Division

    The EDUCATION AND OUTREACH DIVISION supports chemistry education at all levels, including K-12, college, and adult/continuing education. It maintains liaisons to the Chicago Public Schools and the American Association of Chemistry Teachers (AACT). The Division engages the general public in chemistry-related educational activities, participates in ACS activities at the annual Illinois State Fair, and publicizes all events and news-related content. The division oversees the annual Project SEED program for the Section as well as the Project SEED scholarships. The Division also assists public officials and other community bodies concerning chemistry-related matters. The Education and Outreach Division includes the Education, Outreach, Project SEED, and Public Affairs Committees.

    The EDUCATION COMMITTEE provides chemistry-related educational programs and information to learners of all ages and actively engages with educators at the pre-K-12 and college levels. Subcommittees include:

    • AACT Liaison
    • College Education Subcommittee
    • Continuing Education Subcommittee
    • Chicago School Board Liaison
    • K - 12 Education Subcommittee

     

    The PUBLIC AFFAIRS COMMITTEE ensures that section members and public officials and bodies are informed of matters where the knowledge and practice of chemistry is of substantial public importance. These matters can include government issues, environmental issues and the social responsibility of chemists. The Public Affairs Committee gives the Public Affairs Award biennially.

    The OUTREACH COMMITTEE engages the general public, educators and children in chemistry-related educational activities and participates in many different types of events around the greater Chicago area.   Subcommittees include:

    • Community Activities Subcommittee
    • Illinois State Fair Subcommittee

     

    PROJECT SEED COMMITTEE identifies interested low-income and/or minority high school junior and senior students who are interested in participating in a paid summer research experience with  a college or university faculty member.  It supports financial and logistical concerns for the student/ faculty relationships and communicating  relevant program information to the national ACS organization.  The committee is also responsible for distributing Project SEED awards to support the internships. 

    Dry Ice Crystal Ball

    Kids, how can you make a bubble as big as a crystal ball and filled with a smoky haze? All you need to make such a large bubble is dry ice, bubble solution, and a little water. Dry ice sublimes to form carbon dioxide gas, which in turn is used to form and expand the bubble.

    Please note:  All chemicals and experiments can entail an element of risk, and no experiments should be performed without proper adult supervision.

    The supplies you will need are dry ice, a bubble solution, water, and a glass or small glass bowl. To make the bubble: (a) pour some water into the container; (b) have an adult partner add a small piece or two of dry ice using tongs. The dry ice will make bubbles in the liquid; (c) spread a film of bubble solution around the lip of the container; (d) your adult partner can then carefully use their wet, soapy hand or a piece of paper towel that has been wetted with bubble solution to smear bubble solution across the top of the container. (There is a video provided within the link below so you can see how it’s done).

    Variations: (1) adding a little highlighter ink to the bubble solution will make the bubble solution glow. (2) Use tonic water instead of regular water and shine a black light (UV light) on the bubble; the quinine molecules in the tonic water will glow (“fluoresce”).

    How It Works

    Dry ice sublimes in air, meaning the solid carbon dioxide goes through a phase change to carbon dioxide gas. This process occurs much more quickly in water than in air. As the dry ice sublimes, the carbon dioxide vapor is caught inside the bubble solution. The bubble expands, but the cooled bubble solution does not evaporate quickly so the bubble lasts for a relatively long time.

    Sometimes conditions are right for the bubble to stabilize at a given size. This happens because carbon dioxide is able to diffuse across the bubble surface. Subliming carbon dioxide expands the bubble, but when the bubble expands its walls become thinner and leak more. Since more carbon dioxide can escape, the pressure is reduced and the bubble has a tendency to shrink back again. As long as the solution doesn't evaporate too quickly, the bubble may remain relatively stable until the dry ice is nearly gone. At that point the bubble will become smaller. 

    --------------

    Kathleen Carrado Gregar, PhD, Argonne National Labs 
    [email protected]
    April 2009

    ----------------

    References:  Dr. Anne Marie Helmenstine at http://chemistry.about.com/od/dryiceprojects/a/dryicebubble.htm