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It decreases the activation energy, or the energy barrier the reactants must go through to form products. This is the same thing as the energy of the transition state.
By decreasing the activation energy necessary for the reaction to occur, more reactants are able to form products since not as much energy is needed.
See the Web Links to the left of this answer for more information.
What else can I help you with?
Would a catalyst cause an endothermic reaction to become exothermic?
No, a catalyst does not change the overall energy of a reaction. It only lowers the activation energy required for the reaction to occur. Therefore, a catalyst cannot change an endothermic reaction into an exothermic one.
Why is an enzyme considered a catalyst?
An enzyme is referred to as a catalyst as it sets off the digestive process beginning with amylase in the mouth which is produced by the salivary glands (...and followed by all the other enzymes that are mixed with the food along the alimentary canal)
What causes an increase of speed in a combustion reaction?
An increase in temperature, pressure, or concentration of reactants can cause an increase in speed in a combustion reaction. This provides more energy to break the bonds and allows the reaction to proceed faster.
Do catalyst increase equilibrium constant?
No they do not. A catalyst is a thing (atom, molecule, element, etc.) that speeds up a chem. rxn by lowering the activation energy without being altered itself. So it only cause the reaction to occur faster, but will not have any affect on the equilibrium. Also, since the catalyst is not altered, it should 'come out' exactly as it 'went in.'
What word means A substance that can cause something to happen faster than it might have otherwise but is not permanently changed itself?
That is the definition of a catalyst.
Why does a reaction proceed faster when the reactants have greater surfaces area?
A greater the surface area will cause the reaction will proceed faster because there are more available sites where another reagent or catalyst can "attack" the reactant.
What is the effect of a catalyst on a chemical reaction?
To Cause a Chemical reaction. A properly chosen, specific catalyst is able to speed up the rate of a particular chemical reaction.
Would a catalyst cause an endothermic reaction to become exothermic?
No, a catalyst does not change the overall energy of a reaction. It only lowers the activation energy required for the reaction to occur. Therefore, a catalyst cannot change an endothermic reaction into an exothermic one.
What element can cause a molecule to move faster?
If you mean something else, like- What can speed up a chemical reaction, that would be a catalyst. Or, you could say heat, though that is not an element.
Why is an enzyme considered a catalyst?
An enzyme is referred to as a catalyst as it sets off the digestive process beginning with amylase in the mouth which is produced by the salivary glands (...and followed by all the other enzymes that are mixed with the food along the alimentary canal)
What does the presence of an enzyme cause?
The presence of an enzyme can accelerate chemical reactions by lowering the activation energy required for the reaction to occur. Enzymes act as biological catalysts, allowing reactions to proceed at a faster rate without being consumed in the process.
What causes an increase of speed in a combustion reaction?
An increase in temperature, pressure, or concentration of reactants can cause an increase in speed in a combustion reaction. This provides more energy to break the bonds and allows the reaction to proceed faster.
Do catalyst increase equilibrium constant?
No they do not. A catalyst is a thing (atom, molecule, element, etc.) that speeds up a chem. rxn by lowering the activation energy without being altered itself. So it only cause the reaction to occur faster, but will not have any affect on the equilibrium. Also, since the catalyst is not altered, it should 'come out' exactly as it 'went in.'
How does a catalyst change the rate of a chemical reaction?
Lowers the activation energy of a reaction, therefore speeding the reaction up.Catalysts speed up chemical reactions. They do not change the products or reactants of the reaction, and are not used up or consumed in the reaction. Biological catalysts are called enzymes. Catalysts lower the activation energy (or energy needed to start a reaction), and cause the reaction to occur more quickly.
What does trotting mean?
(with reference to a horse or other quadruped) proceed or cause to proceed at a pace faster than a walk, lifting each diagonal pair of legs alternately
What word means A substance that can cause something to happen faster than it might have otherwise but is not permanently changed itself?
That is the definition of a catalyst.
Define the term catalyze?
A catalyst is something that provides an alternative route for a reaction to occur, either by allowing the reaction to occur at a different transition state or by changing the activation energy, and the catalyst itself does not undergo any chemical change during the reaction (materials that do undergo chemical changes are not classified as catalysts, and it gets murkier when you ask about physical changes, i believe there is an iron based material that acts like a catalyst but undergoes a physical change) Alternatively, catalyst can mean an event or a person that produces progress (whether positive or negative), e.g. when someone says 'his appointment was the catalyst for the company's success)
