SS1 Chemistry – Stoichiometry of Reactions

SS2 Chemistry – Chlorine and Other Halogens

HALOGENS The halogens are the group VII elements. The family comprises of fluorine, chlorine, bromine, iodine and astatine. Each member of the family contains 7 electrons at the valence shell.

SS1 Commerce – Check System 1

In this class, we will discuss the cheque system. Enjoy the class! The Cheque System CONTENTS 1. Parties to a cheque 2. Advantages of payment by cheque 3. Types of