Page 283 - SUBSEC October 2017_Neat

UNIT 1
MODULE 1: FUNDAMENTALS IN CHEMISTRY (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED
PRACTICAL ACTIVITIES

9. Forces of Attraction (cont’d)

Students should be able to:
10.
2.6. 10.1 describe the origin of inter- Refer to hydrogen bonding;
molecular forces; Van der Waals forces,
permanent dipole. Refer to
Module 3

2.7. predict the shapes of, and Application of the VSEPR Construct molecular
bond angles in simple theory to include the models and measure bond
molecules and ions; following systems: trigonal angles.
(for example, BF3), linear
(for example, BeCl2),
tetrahedral (for example,
+
NH4 , CH4), pyramidal (for
example, H3O+, CH3, and
NH3), non-linear (for
example, H2O), octahedral
(for example, SF6).

2.8. 10.2 explain the shapes and Ethane, ethene and
bond angles of simple benzene; apply the concept
organic compounds; of hybridisation and
2
resonance. Include sp and
3
sp hybridisation.

2.9. predict the shapes and Simple substituted
bond angles of molecules derivatives, for example
similar to ethane; and, dichloroethane.

2.10. describe qualitatively the Simple molecular (for
lattice structure of example, I2), hydrogen
crystalline solids and their bonded (for example, ice),
relation to physical giant molecular (for
properties. example, SiO2), ionic (for
example, NaCl), metallic (for
example, Cu), giant atomic
(for example, graphite and
diamond) structures.

CXC A11/U2/17 14