What is a catalyst and how does it make a reaction go faster?
a catalyst is a substance used to increase and decrease the rate of a chemical reaction....it makes the reaction go faster due to chemical changes it may hav certain characteristics which help in makingthe reaction fast
a catalyst is a substance that increases the rate of a chemical reaction, but is chemically unchanged at the end of the raction. the process is known as catalysis. calalysts work by lowering the activation energy of the reaction.
Wohoo i stil remember this from last year! A catalyst is a substance that speeds up the chemical reaction without being used up in the reaction itself e.g. manganese dioxide in the making of oxygen. And.. A catalyst works by providing a convenient surface for the reaction to occur. The reacting particles gather on the catalyst surface and 1) collide more frequently with each other 2) more of the collisions result in a reaction between particles because the catalyst can lower the activation energy for the reaction. A catalyst is often used as a powder, so that it has a bigger surface area per gram. Okay i copied the last bit from my science book but i remembered the first bit!! HA!
A catalyst is a chemical substance that speeds up the rate of a reaction, but isn't consumed in the reaction. Catalysts in no way change the final product of a reaction, they just speed the said reaction up by lowering the activation energy (the energy threshold that must be overcome for a reacton to proceed).
Catalysts change the rate of the reaction (faster / slower) without being consumed (used up) in the reaction. They do this by providing a lower energy (easier) pathway from reactants to products. For example in the reaction A + B -D, we can split up the reaction into the two half-reactions below. The first describes the two reactants coming together and the second describes the product formation. A + B -AB AB -D If we add a catalyst which both A and B bond to easier than they do to each other this can increase the rate of the reaction by bringing A and B together on the catalyst. This can be represented with the half-equations below. A + B + Cat -ABCat ABCat -D + Cat
