a chemical change
This is called reaction rate.
This substance is called reactant.
These substances are called reactants.
a pure substance. either a compound or an element. Also, a solution, which is a homogeneous mixture, not a pure substance.
The compound(s) (there can be more than one) that exist(s) before the change is/are called reactant(s).
A substance that undergoes change in a chemical reaction is called a reactant.
This is called reaction rate.
This substance is called reactant.
This substance is called reactant.
This substance is called reactant.
A substance that undergoes change in a chemical reaction is called a reactant.
Chemical Substance
These substances are called reactants.
These substances are called reactants.
A substance or object that is not uniform in composition would be a heterogeneous mixture.
it is called a fixed composition
a pure substance. either a compound or an element. Also, a solution, which is a homogeneous mixture, not a pure substance.