What is Chemical Reaction? types of chemical reaction.

Chemical Reaction.




Chemical reaction is a  process in which some chemicals reacts to form new substances with entirely different properties. In chemical reaction only the re arrangement of Atoms takes Place.
We must have a note in our mind that we can not change the total mass of a substance in a reaction.The total mass must be conserved. Our chemical reaction should not disobey the law of “LAW OF CONSERVATION OF MASS”.
Eg:-
  1. Souring of milk.
  2. Hydrogen reacts with water to form water.
  3. Fermentation of grapes.
  4. Cooking of food
  5. Digestion of food.
  6. Respiration.

TYPES OF CHEMICAL REACTION.

COMBINATION REACTION

It is type of reaction in which two reactants reacts to form one product.
Eg:-
2mg+02--> 2mgo
2c+02-->2co.
2ag+cl2-->2agcl

DECOMPOSITION REACTION

Those reaction in which a compound splits up into or more simpler substances are known as decomposition reactions.
Eg:-
2agcl-->2ag+cl2
2mgcl-->2mg+cl2
2agbr-->2ag+br2

DISPLACEMENT REACTIONS
Those reaction in one element takes the place of another element compound,are known as displacement reaction.
Actually the name itself defines the meaning to displace something.
Eg:-
Cuso4+zn-->znso4+cu
Cuso4+mg-->2mg04+cu

DOUBLE DISPLACEMENT
Those reactions in which two compounds react by an exchange of ions to form two new compounds are called double displacement reactions.
Eg:-.
Agno3+na2so4-->Baso4+2Nacl.

This marks the end of our topic.
Thanks.

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