Question

name different type chemical reaction with given example

Answer 1

hey dear friend here your answer ::

☜☆☞☜☆☞☜☆☞☜☆☞☜☆☞

1. An atom is defined as the smallest unit of a matter which adds repeatedly to form a matter (element, compounds etc..)

2. A chemical equation is a symbolic representation of a chemical  reaction  in which the reactant entities are given on the left hand side and product formed are given on the right hand side and the both are separated by an arrow( →).

Ex:  CaO + CO2 [reactants]--> CaCO3(product)

3.Chemical formula is the symbolic representation of a chemical compound which shows the amount or proportion of each element in that compound.

For ex: NaCl shows each molecule of a common salt has one sodium (Na) and one Chlorine (Cl) atom.

4. As earlier I have described, reactants are those substance which undergo a chemical reaction under certain condition and when they react together , the new substance formed is known as product.

Answer 2

there are 4 types of chemical reactions :
1• Direct combination reactions-The reaction in which two or more substances combine together to form a single substance is called a direct combination reaction.ex.-carbon burns in presence of oxygen gives carbon dioxide

2• Decomposition Reactions - The Reaction in which a compound breaks down to form two or more simpler substances is called Decomposition Reaction.For ex.-magnesium carbonate on heating at 1000°© gives magnesium oxide and carbon dioxide.

3• Displacement Reactions- Those reactions in which a more active element displaces a less reactive element from its compound are called Displacement reactions.for ex.- zinc displaces hydrogen from sulphuric acid.

4• Double Decomposition reactions - A reaction in which two compounds in the solution react to form two other compounds by mutual exchange of atoms or groups atoms is called double Decomposition reaction.for ex.when a solution of sodium sulphate is added to a solution of lead nitrate a white precipitate of lead sulphate is formed.