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Carbon: The Foundation of Molecular Diversity

Explore the properties of carbon and its role in forming large, complex, and diverse molecules. Learn about organic compounds, hydrocarbons, isomers, functional groups, and their significance in the chemistry of life.

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Carbon: The Foundation of Molecular Diversity

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  1. Chapter 4 Carbon and the Molecular Diversity of Life

  2. You Must Know • The Properties of Carbon that make it so important

  3. Carbon Overview • Although cells are 70–95% water, the rest consists mostly of carbon-based compounds • Carbon is unparalleled in its ability to form large, complex, and diverse molecules

  4. Organic chemistry is the study of compounds that contain carbon • Organic compounds range from simple molecules to colossal ones • Most organic compounds contain hydrogen atoms in addition to carbon atoms

  5. 4.2 • Carbon atoms can form diverse molecules by bonding to four other atoms • This leads to formation of large, complex, and diverse molecules

  6. So why carbon? • 1) It has 4 Valence Electrons • 2) It can form up to 4 Covalent Bonds • 3) These can be single, double, or triple • 4) It can form large molecules • 5) These can be chains, ring-shaped, or branched

  7. Hydrocarbons are organic molecules consisting of only carbon and hydrogen • Many organic molecules, such as fats, have hydrocarbon components

  8. The valences of carbon and its most frequent partners (hydrogen, oxygen, and nitrogen) are the“building code” that governs the architecture of living molecules

  9. Isomers are compounds with the same molecular formula but different structures and properties: • Structural isomers have different covalent arrangements of their atoms • Geometric isomers have the same covalent arrangements but differ in spatial arrangements • Enantiomers are isomers that are mirror images of each other

  10. Enantiomers are important in the pharmaceutical industry • Two enantiomers of a drug may have different effects

  11. 4.3 • A small number of chemical groups are key to the functioning of biological molecules • Functional groups are the components of organic molecules that are most commonly involved in chemical reactions • The number and arrangement of functional groups give each molecule its unique properties

  12. The seven functional groups that are most important in the chemistry of life: • Hydroxyl group • Carbonyl group • Carboxyl group • Amino group • Sulfhydryl group • Phosphate group • Methyl group

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