Question

what is composition and decomposition​

Answer 1

Chemical decomposition, analysis or breakdown is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds. Chemical decomposition is usually regarded and defined as the exact opposite of chemical synthesis.

Answer 2

Hey mate..

A composition reaction (sometimes also called a combination reaction or a synthesis reaction) produces a single substance from multiple reactants..

2 H2(g) + O2(g) → 2 H2O(ℓ)..

A decomposition reaction starts from a single substance and produces more than one substance; that is, it decomposes. One substance as a reactant and more than one substance as the products is the key characteristic of a decomposition reaction.

2 NaHCO3(s) → Na2CO3(s) + CO2(g) + H2O(ℓ)

Hope it helped ❤️❤️