GRAPHITE
What is graphite? Unlike the tetrahedral arrangement of atoms in diamond, the carbon atoms in graphite are arranged in theRead More »GRAPHITE
DIAMOND
DIAMOND What is diamond? Diamond is the purest form of natural carbon. It occurs as small crystals embedded in rocks.Read More »DIAMOND
ELECTRODE REACTIONS
Cathode reactions (reduction) (-) negative cathode where reduction of the attracted positive cations is by electron gain (reduction) to formRead More »ELECTRODE REACTIONS
ELECTROPLATING
Electroplating is a process of depositing a thin layer of a fine and superior metal (like chromium, zinc, nickel, goldRead More »ELECTROPLATING
ELECTROLYTES AND NON-ELECTROLYTES
However, if the compound is unable to ionise it does not conduct electricity it is called a non-electrolyte. In general,Read More »ELECTROLYTES AND NON-ELECTROLYTES
EFFECT OF AN ELECTRIC CURRENT ON SUBSTANCES
Introduction In any chemical reaction, the existing chemical bonds are broken and new chemical bonds are formed. Hence, all chemicalRead More »EFFECT OF AN ELECTRIC CURRENT ON SUBSTANCES
SALTS
General Preparation of Salts Salts are generally ionic compounds formed by the reaction of an acid with a base. TheRead More »SALTS
BONDING IN METALS
Bonding in metals Metal atoms have relatively few electrons in their outer shells. When they are packed together, each metalRead More »BONDING IN METALS
INTERMOLECULAR BONDING – VAN DER WAALS FORCES
Van Der Waals Forces Intermolecular attractions are attractions between one molecule and a neighbouring molecule. The forces of attraction whichRead More »INTERMOLECULAR BONDING – VAN DER WAALS FORCES
THE PHYSICAL PROPERTIES OF SILICON DIOXIDE
Silicon dioxide Has a high melting point – varying depending on what the particular structure is (remember that the structureRead More »THE PHYSICAL PROPERTIES OF SILICON DIOXIDE