Answer:
Each substance on the left side of the arrow in a chemical equation is a reactant.
Step-by-step explanation:
The chemical changes (chemical reactions) are represented by chemical equations.
The chemical equations show the starting substances and the final substances.
The starting substances of the reaction are the reactants.
A single arrow is used to indicate the direction of the reaction, the reactants are placed on the left side of the equation, and the products appear on the right side.
This sketch shows that:
reactants yield products
general form A + B → C + D
example Na + Cl → NaCl