Answer:
The original substances in a chemical equation are:
c. Reactant
Explanation:
Reactants : The substance that are initially present in a chemical reaction and produce new compound (called products ).
Products : The substances produced after the reaction completes . here new bonds and species are formed
[tex] A + B \rightarrow C +D[/tex]
A and B are originally present and called reactants
C and D are newly formed and called reactants
So original substance = Reactant
New Substance = Products
