The ——— (physical/chemical) state of the reactants and products are mentioned along with the conditions required for the chemical reaction.

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Solution

The Physical State of the reactants and products are mentioned along with the conditions required for the chemical reaction.
On writing chemical reactions, we always mention the physical state of the substance.
For example, ${CaCO}_{3} (s) \to CaO (s) + {CO}_{2} (g)$
(s) represents the solid state
(l) represents the liquid state
(g) represents a gaseous state
All the states are written in small letters only.

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