14/8/2011
Chemistry Revision
Topic:Compounds

Definition of a compound: A compound is made up of two or more substance chemically combined together.
Characteristics of Compound

• Compounds have different properties from the element they are made of
• The different elements in a compound are joined together in a fixed proportion by mass
• Chemical reaction happen,heat or light is usually given out or taken in
• Compounds can only be broken down into simpler substances by chemical methods

Examples of some compound: Water,nitrogen oxide,common salt,chalk,sugar,sand,copper chloride,sodium chloride,alcohol,magnesium oxide.