Sun is a star, not reactant or product.
reactant
The reactant, because it is reacting to form the product of H2O.
The product is what is produced at the end of a chemical reaction. Example | H2 (Reactant) + O (Reactant) -----> H2O (Product)
product
product
Sugar can be both a reactant and a product.
reactant
This depends on the reaction involved.
reactant
sulfur is a reactant
Reactant
The reactant, because it is reacting to form the product of H2O.
Oxygen is a reactant
product
Reactant- glucose and product- carbon dioxide.
The product is what is produced at the end of a chemical reaction. Example | H2 (Reactant) + O (Reactant) -----> H2O (Product)
Reactant(s) are the starting material/chemical to a reactiion Product(s) are the final material/chemical at the end of a reaction.