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. 

    Leak Busters

     

    Kids, today we'll prove that helium leaks out from regular balloons and what can be done to stop it. Did you ever buy a balloon bouquet for someone? You probably know that you can't just make one yourself, because balloons filled with normal air don't float like the ones with helium do. And you may have already learned that this works because helium gas is lighter, or less dense, than the gases in regular air (nitrogen and oxygen). So you have to buy balloons filled with helium. But the gift shops now know certain tricks. Leaking helium molecules were a real problem for people who deliver balloon bouquets to parties. Their customers used to often complain that the helium balloons drooped within a day, or even overnight.

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

    You can prove that this droopiness is due to a gas leak by doing the following test. Get a regular balloon, a bottle of vanilla extract (or almond or orange), and a glass of water. Pour two capfuls of the vanilla into the balloon and then blow it up with air and tie it. Set the balloon on the glass so that the knot is under water. Leave this set-up overnight in a confined space, such as a closed bathroom or closet. Your nose should then help you solve the mystery. A balloon's surface has lots of tiny holes that can be seen only with powerful magnifiers, and vanilla molecules are small enough to eventually leak through this surface. Helium molecules are much smaller than air or vanilla molecules, and so they leak out even faster.

    What can be done to slow this leakage and make the balloons last longer? A chemist (a "leak buster") invented a chemical called Hi-Float® to slow down the leaks. Hi-Float® coats the inside of balloons with a special stretchy film with very small holes. It makes it harder for the helium molecules to leak through the walls of the balloons. Some will float for as long as 15 days! Now in gift shops they will often ask you if you want Hi-Float® used in your balloons. The shiny foil balloons made from Mylar® are also leak busters. Their surface has virtually no holes at all so they can stay filled for several weeks.

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    Kathleen Carrado Gregar, PhD, Argonne National Labs 
    [email protected]
    April 1996

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    Reference: WonderScience (American Chemical Society), November 1986.