An explanation sheet for making
Straw Molecular Model 3

Contents
Benzene
Application of the benzen model

Example 11: How to make a benzene model
Each carbon atom of benzene molecule is connected by sp2 hybrid orbital, therefore carbon atoms of this benzene model have three connective arms.
2 Make two transversal slit on C-C bond straw (below) on each opposite side and one transversal slit on C-H bond straw. Make a longitudinal slit on each 20mm part of the straw.

3 Insert a slit side of a C-H bond straw into a C-C bond straw's 4 Assemble straws along pictures 4-9.
5 6 7
8 Half of the carbon skeleton of benzene model is finished. 9 Finished the carbon skeleton of benzene model. 10 Insert connectors into C-H bond straws. After that put H atom straws to the connectors.

Example 12: Application of the benzene model
Naphthalene Benzoic Acid (C6H5COOH)

Phenol (C6H5OH) Salicylic Acid (C6H4(OH)(COOH))

Toluene (C6H5CH3) o-Cresol (C6H4(CH3)OH)

m-Xylene (C6H4(CH3)2)

Please apply these straw molecular models to daily classroom lessons.

"Straw Molecular Model" Copy right JICA Senior Volunteer Hideo Nakano (Oct 2005)
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