Unwanted Chemicals in our Bodies (5) – Perfluorinated Chemicals (PFC’s)

Perfluorinated Chemicals (PFCs) (or Fluorocarbons) are essentially alkane but with the 'H'sreplaced with 'F'.  They are extremely stable compounds - much more stable than alkanes (why?) They have a variety of uses - as water repellents (in clothing and furniture),  non-stick items (such as frying pans and in floor waxes or coated paper. Due to their unreactivity, they do not breakdown in nature very easily and tend to accumulate in the environment. They can enter the body through the diet (for example, in fish) ...

Candles

  It was one of my students birthdays last week. The student brought in a cake, I had a candle, we lit it, sang happy birthday, etc ..... and then had a remarkably good discussion into wjat happens during the combustion of a candle. What is actually burning? The students asked. The wax? the wick? both? neither? By Matthew Bowden www.digitallyrefreshing.com (http://www.sxc.hu/photo/148763) , via Wikimedia CommonsThis is actually a good discussion to have if you are about to teach this organic Chemistry ...