Reactants. Reactants react to produce products.
Reactants- The substances used up in a reaction. Products- The new substances made.
Substances that participate in the complete, finished reaction are called reactants. Substances that participate for only part of the reaction (in other words, it is used up [or canceled out in the equation]) are called intermediates. Substances that do not participate in the reaction but are still added (and speed up the reaction [their identity is not changed]) are called catalysts.
Oxygen is the gas that is used up when substances burn. The reaction between the substance and oxygen produces heat and light energy.
Reactants are the substances that are consumed or used up in a chemical reaction to form products. Products are the new substances that are formed as a result of the reaction between the reactants.
Enzymes are special proteins that help change substances during chemical reactions by speeding up the reaction process without being consumed in the reaction.
The presence of a catalyst in a reaction will lower the activation energy required to complete the reaction. The catalyst is not used up in the reaction, it is just there to speed it up.
The products
Substances that speed up a chemical reaction without being consumed are called catalysts. They lower the activation energy required for a reaction to occur, allowing it to proceed more quickly. Catalysts can be found in various forms, including enzymes in biological systems, and they remain unchanged after the reaction, allowing them to be reused.
They are called reactants. The outputs are called products.
The substances you end up with in a chemical reaction are called products. These products are the result of the reactants undergoing chemical changes and forming new substances with different properties.
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.
The products