The catalyst is not a reactant in a chemical reaction but contribute to the success of this reaction.
It is a reactant in a chemical reaction.
It provides the energy needed for the reaction.
It is not consumed by the reaction.
It is a product of a chemical reaction.
Yes, it's true.
that is true
Yes. it is true.
It is true that a catalyst is used in chemical reactions to help speed up the reaction by reducing activation energy.
True. That's one of the reasons you use them.
I think this refers to catalysts as these are considered not to be changed by a reaction-- sometimes this true when molecules react on the surface of a catalyst bu sometimes the catalyst does get involved in the chemical reaction- but is regenerated.
Reduces the activation energy of the reaction, which speeds up the progress of the reaction It increases the rate of a chemical reaction. However a true catalyst is not consumed in the reaction.
CFC's are catalysts. They fasten the rate of reaction.
Yes, a catalyst can be re-used, because It is NOT actually used in a chemical reaction. A catalyst will increase the rate of reaction by attracting reactants, but the catalyst is not a reactant. However, the reuse cannot be done indefinitely then, depending on the severity of the reaction conditions, it can be occur a small, but accumulative deactivation of the catalys.
Yes. They speed up a reaction without being consumed in it.
true
In any reaction, a catalyst is never used up or changed. This means that at the end of every reaction you should always get your catalyst back. sometimes in the course of the reaction, the catalyst is used up, but by the end of the reaction it will always be reformed completely.