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    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. 

    Proteins and Hard Boiled Eggs

    Kids, did you ever wonder why eggs get hard when you boil them? It’s because they have lots of protein, especially in the egg whites. Here’s how it works. Protein is a polymer chain of amino acids that is flexible enough to fold up on itself in different ways based on their chemistry. It’s all wound up like a loose ball of string and held in place by weak bonds that are fairly easy to break apart. When that happens, the protein is called “denatured”.

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

    Have an adult help you to hard boil an egg. Imagine what’s going on inside the shell. When heated, the protein molecules gain enough energy to shake apart the weak bonds and the proteins begin to unfold. With time and more heat, new and stronger bonds are formed between different protein molecules. Another way to break the weak bonds is through chemical action. If you put a raw egg white in vinegar, the acetic acid will break some bonds in the egg. Use a dark bowl to help see it better. The egg white will start to set right away and get sort of pickled. When using an alcohol like vodka instead, the ethanol will break the weakest bonds in the protein. A lot of alcohol is needed, so really cover up the egg white. You should see some white strands form, but don’t be tempted to stir for this will just make a mess. You can see the greatest effect when both the alcohol and vinegar are used together. Notice the differences between these three different solutions and their effects on proteins. Mechanical energy will also work; whisking egg whites will unfold proteins and cause new bonds to form, and it stays in a new low-density “fluffier” state. A cooked, chemically-altered, or well-beaten egg white will never to go back to its original wet and gooey state.

    The yolk of the egg holds up better to both the mechanical energy and to the alcohol or vinegar attack. While there is a lot of protein in the yolk, there is also a lot of fat and other molecules that make it more difficult to denature. When hard-boiling eggs the recipe always calls for using a moderate heating process. High heat causes the proteins to get really tough and rubbery, and a chemical reaction between the yolk and the white leaves a green film around the yolk. Did you ever see this, maybe in an Easter egg? That film is actually iron sulfide, made from iron in the yolk and hydrogen sulfide from the white. It doesn’t hurt you of course and has no taste, but it doesn’t look too appetizing!

    Next check out these websites: www.hows tuffworks.com/question231 gives the scientific reason for the answer to the question of which came first, the chicken or the egg, and www.howstuffwork s.com/question85 describes how a chicken makes an egg using some really cool inorganic chemistry. 

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    Kathleen Carrado Gregar, PhD, Argonne National Labs 
    [email protected]
    August 2001

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    Reference : Marshall Brain’s “How Stuff Works” website at www.howstuffworks.com /question616