1. The properties of compound differ from those of its constituents.
2. Compound has fixed melting point and boiling point.
3. Compound is a homogeneous substance.
4. Constituent elements can be separated by chemical process.
Separation of Mixtures:
|Type of Mixture||Separation method|
|1. Two immiscible liquids. Example, oil + water||By using separating funnel|
|2. Ammonium chloride + sand||Sublimation|
|3. Dyes in black ink. (One solvent; different constituents)||Chromatography|
|4. Two miscible liquids. (Acetone + water}||Distillation|
|5. Solid particles insoluble from (solvent) liquid. (Milk + Cream)||Centrifugation|
Physical and Chemical Change
|Physical Change||Chemical Change|
| ||A new substance is formed.|
| ||Properties of constituent elements/substance changes.|
| ||Loss or gain of heat may be involved in this reaction.|
| ||This change is generally irreversible (can be reversible also).|
|A substance which is dissolved in a solvent. E.g., salt, sugar.||Liquid part of solution in which a substance is dissolved. E.g., water.|
|Solute can be solid, liquid or gas.||Solvent can be liquid, solid or gas.|
| ||Size of solute particles are not visible with naked eyes.|
| ||Shows tyndall effect|
| ||Colloidal particles do not settle down|