Page 300 - SUBSEC October 2017_Neat

UNIT 1
MODULE 3: CHEMISTRY OF THE ELEMENTS (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

3. Group IV Elements

Students should be able to:

3.1. explain the variations in Include reference to
physical properties of the variations in metallic
elements in terms of character and electrical
structure and bonding; conductivity.

3.2. describe the bonding of
the tetrachlorides;

3.3. explain the reactions of the Include equations.
tetrachlorides with water;

θ
3.4. 1.10 discuss the trends in: Make reference to E
1.11 values of the elements.
(a) bonding;

(b) acid/base character; Include equations.
and,

(c) thermal stability of
the oxides of
oxidation states II
and IV;

θ
3.5. discuss the relative Make reference to E
stabilities of the oxides and values of the elements.
aqueous cations of the
elements in their higher
and lower oxidation states;
and,

3.6. discuss the uses of Include its use as abrasives,
ceramics based on silicon furnace lining, glass and
(IV) oxide. porcelain. Relate use to
properties.

4. Group VII Elements

Students should be able to:

4.1. 1.12 explain the variations in Volatility, density, colour
physical properties of the and state. (An explanation
elements in terms of of colour is not required).
structure and bonding;

CXC A11/U2/17 31