When a new substance is created from a chemical reaction what is it called?
It's called Product.
A substance which enters into a chemical reaction is called a reactant. In a chemical reaction-also called chemical change- one or more reactants (the initial substances that enter into the reaction) change into one or more products (the final substances that are present at the end of the reaction).
The substances you have at the beginning of a chemical reaction are called Pure substances and ends with ends with substances called?
Pure substances (or ELEMENTS) form COMPOUNDS after a chemical reaction. For example: Sodium and chlorine, when fused in a chemical reaction become the compound Sodium-Chloride The substance you have in the beginning of a chemical reaction are called reactants and the substance you have when chemical reaction is complete is called products.