Chemical reaction - The chemical reactions are classified into different classes depending upon the type of chemical changes take place these reactions are as follows:
Combination reaction
Combination reaction - A reaction in which two are more reactance combined to form a single product is call combination reaction
- calcium oxide reacts vigorously with water to form calcium hydroxide the reaction is highly exothermic a lot of heat is produced during the reaction
- CaO(s) + H2O(l) -------------- CH3OH(l)
Decomposition Reaction
Decomposition reaction - aur reaction in which a single reactant breakdown to form two or more products is known as decomposition reaction this reaction is opposite to combination reaction on the basis of the form of energy required for the reaction this reaction of three types
- thermal decomposition this reaction use the energy in the form of heat for the decomposition of reactant
- Electrolysis these reactions involves the use of electrical energy for the decomposition of the reactant molecules
- Photolysis these reactions involved the use of light energy for the purpose of decomposition
Displacement reaction
Displacement Reaction - when a more reactive element displays less reactive element from its compound it is called displacement reaction.This is of types.
- Single displacement reaction - it is a type of chemical reaction where an element reacts with the compound and takes the place of another element in that compound is called single displacement Zn + cuso4 --------- ZnSO4 + cu
- Double displacement reaction - the reaction in which two different oils or group of atom in the reactant molecules are displaced by each other is called double displacement reaction it is also called precipitation reaction as precipitate is produced in such reactions
Oxidation and reduction
Oxidation - it is the process in which oxygen is added to a substance or hydrogen is removed from a substance
Reduction - it is the process in which oxygen is removed from a substance or hydrogen is added to a substance
Redox reaction - these are the reactions in which oxidation and reduction takes place simultaneously or call redox reaction
Endothermic and Exothermic
Endothermic - the reaction which are a complaint by the evolution of heat are called exothermic reaction all the reaction in which heat is released along with the formation of product are called exothermic reaction
Endothermic - the reaction which occur by the absorption of heat energy either in the form of light electricity are called endothermic reaction
Hope it helps u