Question

Example of some irreversible biological changes that takes place in nature.

Answer 1

Irreversible Changes

As compared to reversible changes, irreversible changes are permanent changes. Reactants react to form an entirely new compound and cannot be reversed. Heating, burning, mixing, powdering are few processes which cause irreversible changes. A common observable instance in your daily life is the cooking of raw egg. You can’t get the raw egg back once it is cooked into your favourite omelette!

Once you burn a paper and it is fully combusted, you can’t get it back from the ash! When a reaction is taking place in a unidirectional way such reactions are irreversible reactions. In such reactions in a period of time reactants react completely to form a product. Here reaction is denoted by a one-way arrow (→). For example,

A → B +C

Here, A is the reactant which is completely converted into products B and C which do not react to form A.