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Review. 1. What is an allotrope? 2. Name the 4 allotropes of carbon and how their bonding differs. 3. How many valence electrons does carbon have? 4. What is the octet rule? 5. What type of bonds would the carbon in this molecule have? CO2
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Review • 1. What is an allotrope? • 2. Name the 4 allotropes of carbon and how their bonding differs. • 3. How many valence electrons does carbon have? • 4. What is the octet rule? • 5. What type of bonds would the carbon in this molecule have? • CO2 • 6. Why is it significant that carbon’s valence electrons are so close to its nucleus.
Section 2: Carbon Compounds Carbon and Its Compounds
Organic Chemistry • Vitalists theory- early 1800’s- “Vital force”-special force in organisms was necessary to produce carbon compounds; couldn’t be synthesized in the lab
Organic Chemistry • 1828-Wohler-synthesized urea in lab without using kidneys • Concluded that life’s compounds are unique because they contain carbon • Led to new branch of chemistry • “Organic Chemistry”
Organic Chemistry • Study of carbon compounds • Exceptions- CO2, CO3 ions-act more like inorganic compounds • Organic compounds found in nature have been synthesized in the lab—vitamins, drugs, hormones • Organic compounds synthesized in the lab that aren't found in nature—plastics, fivers, polymers (Kevlar), refrigerants, drugs, insecticides (DDT)