IGCSE Chemistry

An electric current is the flow of electrons or ions. Covalent compounds can not conduct electricity because they make bonds by sharing e...

Metals Have a giant structure of positive ions surrounded by free electrons Are held together by metallic bonding. They have a giant str...

Word equations and Balanced chemical equations are used to represent the reactions studied in this specification. In a chemical equat...

Relative formula mass can be found by adding up the mass numbers A mole is a precise number. When you get precisely that number of atom...

I've released that Section 1 of this specification is incomplete, so I'll be going back changing and adding new information.

The whole specification for IGCSE Chemistry has been completed. (Yay!) Good Luck and happy studying.

Nitrogen from the air and hydrogen from either natural gas or from the cracking of hydrocarbons are used in the manufacture of ammonia Hab...