Explain the mixtures and compounds
1. Mixtures are made from 2 or more substances which are not chemically combined together.
2. Constituents can be separated by physical methods easily
3. Physical properties (colour, density etc.) are an average of the substances present in a mixture.
4. No energy changes occur when the mixture is formed.
5. Composition of the mixture may differ.
6. A mixture has no specific melting point or boiling point.
7. The constituent substances retain their chemical properties originally.
A compound is formed when 2 or more substances are chemically combined together.
Elements forming the compound can be separated chemically.
Physical properties are different from the elements forming it.
Formation of the compound is associated with energy changes (heat, light etc.).
Ratio of elements in the compound is always constant.
A compound has a fixed melting point and boiling point.
A compound possesses unique chemical properties.