2. Alkanes

In this section, you need to know the following information:

1) The definition of hydroncarbons.  Hydroncarbons which only contain C and H atoms includes alkanes,cycloalkanes, alkenes, alkynes benzene or alkylbenzene.

2.1 The structure of alkanes

1) Covalent bond formations of methane and ethane

2）The structure of alkanes including sp3 hybrid of carbon, bond length ,bond angle, and bond energy of C-C bond and its tetrahedronal geometry.

3) Classification of carbon and hydrogen atoms in alkanes. For  C: 1°, 2°, 3°, 4°. For H: 1°, 2°, 3°.

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