| Random Vocab Word |
beta radiation |
| beta particles (fast moving electrons emitted from a radioactive source |
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| Science News |
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We are experiencing problems with our website this evening. I am working on it but have not yet been able to spot where the problem is rooted. I hope to have it working again soon. In the mean time, study your practice test. If I can't fix things tonight I will allow extra time to take on-line quizzes.
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| February 22 in chemistry |
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 1824 - Pierre Jules Cesar Janssen born: astronomical spectroscopy and photography, particularly of the Sun; found a line in the solar spectrum subsequently identified with helium. |
| 1828 - Friedrich Wöhler wrote to J. J. Berzelius that he had synthesized urea, the first synthesis of an organic compound from inorganic materials. |
| 1879 - Johannes N. Brønsted born: acid-base theory and properties of ions; kinetics and catalysis; nitramide. |
| 1956 - U.S. released $1 million of uranium for civilian nuclear power. |
sources: http://webserver.lemoyne.edu/faculty/giunta/week.html, ACS Calendar,
http://todayinsci.tripod.com/
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