Answer :
They are listed on the left side of an equation. Assuming you're talking about chemistry.
This is the arrow production of products in basic chemistry equations.
Reactants --> Products
In later chemistry, there would be equilibrium equations in chemistry, meaning both sides are reactants and both sides and products.
Reactants ---> Products
Products <--- Reactants
This is the arrow production of products in basic chemistry equations.
Reactants --> Products
In later chemistry, there would be equilibrium equations in chemistry, meaning both sides are reactants and both sides and products.
Reactants ---> Products
Products <--- Reactants
