Tuesday, 25 December 2018

Chemistry STPM Sem 2 - Chapter 3 Periodic Table

9 Periodic Table: Periodicity

Candidates should be able to:
9.1 Physical properties of elements of Period 2 and Period 3
(a) Interpret and explain the trend and gradation
of atomic radius, melting point, boiling point,
enthalpy change of vaporisation and electrical
conductivity in terms of structure and bonding;
(b) Explain the factors influencing ionisation
energies;
(c) Explain the trend in ionisation energies across
Period 2 and Period 3 and down a group;
(d) Predict the electronic configuration and position of unknown elements in the Periodic Table from successive values of ionisation energies.
9.2 Reactions of Period 3 elements with oxygen and water
(a) Describe the reactions of Period 3 elements
with oxygen and water;
(b) Interpret the ability of elements to act as
oxidising and reducing agents.
9.3 Acidic and basic properties of oxides and hydrolysis of oxides
(a) Explain the acidic and basic properties of the
oxides of Period 3 elements;
(b) Describe the reactions of the oxides of Period
3 elements with water;
(c) Describe the classification of the oxides of
Period 3 elements as basic, amphoteric or
acidic based on their reactions with water, acid
and alkali;
(d) Describe the use


















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