Prabin Kalikote

We know, water breaks down into hydrogen and oxygen during its electrolysis. As two elements decompose themselves in this chemical reaction, it is called a decomposition reaction.

2H₂0 --------> 2H₂ + O₂

We know, a chemical reaction in which an acid and base react together to give salt and water is called an acid-base reaction. Here acidic and basic nature et compounds are neutralized. So, it called a neutralization reaction.

The burning of magnesium in the air conducts that reaction where magnesium and oxygen combine to form magnesium oxide. As two elements combine each other, it is called a combination reaction.

2Mg + O₂ ------> 2MgO

The amount of a substance that contains 6.023 X 10²³ atoms or ions is called moles.

Avogadro's number is the number of particles in one mole of a substance.

N_A = 6.023 X 10²³

The atomic weight of an element expressed in grams is called gram atomic weight.

The molecular weight of a substance expressed in grams is called molecular weight.

A chemical reaction in which aid and base react together to gee salt and water is called an acid-base reaction.

It is called a neutralization reaction because the acidic and basic nature of compounds is neutralized during the reaction.

A chemical reaction in which an atom of a compound is displaced by another element is called a displacement reaction. Its types are:

1. Single displacement rxn.
2. Double displacement rxn.