Description Of A Chemical Equation|Characteristics Of Chemical Reaction|Change In State|Change In Colour|Evolution Of A Gas|Change In Temperature

"Characterstics Of Chemical Reactions Change Of Colour"|Change Of Temperature|Change In State|Summary

What are the main characteristics of a chemical change?

Introduction|Exercise|Characteristics Of Chemical Reaction|Evolution Of A Gas|Formation Of Precipitate |Summary

Define : Chemical change.

What is the importance of Chemical Changes ?

………..is a chemical change.

A chemical change may involve-

Melting of ice is a chemical change

(a) What is meant by a chemical reaction ? Explain with the help of an example (b) Given one example each of a chemical reaction characterised by: (i) evolution of a gas (ii) change in colour (iii) formation of a preopitate (iv) change in temperature (v) change in state.