A substance used in a chemical reaction can either be a reactant or catalyst.
If it is undergoing the reaction, then it is a reactant.
If it does not undergo the reaction and just changes the rate of reaction, then it is a catalyst.
It depends what you are talking about, reagents are the substances that you put in at the beginning of a reaction to form products. But you can also have reactions taking place within a solvent, for example H20, DMF or THF. Reagents is probably the answer your looking for though.
reactants are use up in a reaction but if any one reactants is totally consumed other do not then it is known as limiting reactant.
Reactants, (and/or) catalysts
These substances are called reactants.
The name of this process is "chemical reaction".
This reaction can be called "deoxidation" or "reduction".
These substances are called products in English.
A binary compound
It is a old new molecule
Initiater
The chemicals at the start of a reaction are always called the reactants.The chemicals at the end of a reaction are always called the products.
compound
The substances formed in a chemical reaction are called products
Reactants are substances that can combine in a chemical reaction.
The name of this process is "chemical reaction".
a reactant
This reaction can be called "deoxidation" or "reduction".
These substances are called products in English.
A binary compound
Irreversible :D
This could refer to a chemical transformation (chemical change), a chemical reaction, or spontaneous change. Some changes require another substance or substances to be mixed together. Some reactions will occur by themselves without any outside manipulation or stimulation.