2 Organic Chemistry An organic compound is a compound made from carbon atoms.has one or more C atoms.has many H atoms.may also contain O, S, N, and halogens.
3 Organic Compounds Typical organic compounds have covalent bonds. have low melting points.have low boiling points.are flammable.are soluble in nonpolar solvents.are not soluble in water.oil (organic) and water (inorganic)
4 Organic vs. InorganicPropane, C3H8, is an organic compound used as a fuel.NaCl, salt, is an inorganic compound composed of Na+ and Cl- ions.Why is propane organic,but NaCl is not?
6 Learning CheckIdentify each characteristic as most typical of compoundsthat are 1) inorganic 2) organic.A. has a high melting pointB. is not soluble in waterC. has a formula CH3─CH2─CH3D. has a formula MgCl2E. burns easily in airF. has covalent bonds
7 Solution Identify each characteristic as most typical of compounds that are 1) inorganic 2) organic.1 A. has a high melting point2 B. is not soluble in water2 C. has a formula CH3─CH2─CH31 D. has a formula MgCl22 E. burns easily in air2 F. has covalent bonds
8 Writing Formulas for Alkanes In organic compoundscarbon has 4 valence electrons and hydrogen has 1.•• C • H •to achieve an octet, C forms four bonds.H H H C H H C HH H CH4 , methane
9 Tetrahedral Structure of Carbon VSEPR theory predicts that a carbon atom with four single, covalent bonds, has a tetrahedral shape.
10 Organic Molecules In organic molecules, valence electrons are shared. covalent bonds form between carbon atoms.H H H H• • • •H C C H H C C HH H H Hethane, CH3─CH3
11 Tetrahedral Structure of Carbon In molecules with two or more carbon atoms, each carbon atom with four single bonds has a tetrahedral shape.