Question

Hii, answer

Give the characteristics of a chemical change??

Answer 1

Question :

Give the characteristics of a chemical change.

Answer :

The chemical composition of a substance changes as a result of chemical change.

In a chemical reaction or change the properties of the products formed are very different from the properties of the reactant.

Chemical changes are Irreversible it means a substance undergoing a chemical change cannot be reversed to its original form by simple physical or chemical methods.

Chemical change is always accompanied by energy change that is energy in the form of light, heat ,electricity etc. is either released or absorbed.

Answer 2

¤ A Substance is said to undergo a Chemical Change when the Chemical Properties of a substance alter. 

The Characteristics of a Chemical Change are:
1. Permanent in nature.
2. Since, the original composition of the substance changes, one or more new substances are formed.
3. Forms of energy, such as heat, light or electricity, may be emitted or absorbed.
4. Chemical Change is generally irreversible. At least, it cannot be reversed by simple physical means.

¤ Examples of a Chemical change are:
Burning of paper, Burning of fuel, Rusting of Iron, the Souring of milk, Growth in a living being, Cooking, Digestion of food, Burning of wood, etc.