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Tag: chemical equations

chemistry 0

Basics of chemical reactions and chemical equations.

Chemical Change The change which give rise to new substances with new properties that are totally different from the starting matter. 2H2 + O2     ———> 2H2O Chemical changes are normally accompanied by the following changes:- 1. change in state 2. Change in colour 3. Change in temprature 4. Evolution of gas Chemical reaction Representation of a chemical change in […]

chemistry 0

How to balance the chemical equation?

The need of balancing the chemical equation. The law of conservation of mass , “ Mass can neither be created nor be destroyed during any chemical change”. So the number of atoms on both RHS and LHS must be equal in the chemical equation. We have to check the total number of atoms on RHS is equal to the total […]