Including the Monthly PES
2001 PES NEWSLETTER
- Human Genome Project
- Hepatic Encephalopathy
- Exposure to Hydrocarbons
- Reviewing Pharmaceutical Packaging Slips
In this article, Real Basic Chemistry for Porphs, we’re not going into any
chemical theory. We’re not going to explain the interesting how and why of
what we write--just the dry facts as we know them, or think we do.
The ancient Greeks thought that everything was made up in varying
proportions of four things: earth, fire, air and water. Today we believe that
here on earth, and probably in the other planets, and suns there are 90
naturally occurring elementary materials or
and everything is either an element, or composed of different elements in
certain definate proportions not arbitrary porportions. Such combinations are
More about them a bit later after introducing atoms and molecules.
The point is then that every thing.is either an element or a compound, or as in
the human body a mixture of elements and thousands of different compounds.
You are very familiar with many elements directly, and with the names of
many more. We have found it convienent to classify elements as either
METALS or not metals, NON-METALS
We list some of the more important ones (for our purposes ) below. We also
append the chemical symbol for them.