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A catalyst is a material which make possible a chemical reaction, improve the rate of reaction, increases the yield of the reaction; a catalyst doesn't react with reactants/products.
Wiki User
∙ 9y ago
Wiki User
∙ 12y agoA catalyst is a substance that makes chemical reactions happen faster. They don't affect the outcome of the reaction, only the time in which it happens.
Wiki User
∙ 13y agoCatalysts work by lowering the "start-up" energy of a reaction.
Wiki User
∙ 10y agoa catalyst such as chlorophyll is completely used up in a chemical reaction
Wiki User
∙ 14y agothe catalyst alter the rate of a reaction and remain unchanged after thecompletion of reaction. the positive catalyst increase the rate of reaction while negative decreases.
Wiki User
∙ 9y agoA catalyst doesn't react with the reactants/products but improve the reaction rate and the yield.
Wiki User
∙ 9y agoThe catalyst doesn't react with reactants or products but can improve the reaction rate and yield.
Wiki User
∙ 10y agoIt is not consumed by the reaction.
Dolores Wan
C.
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What is a substance that speeds up a reaction?
A catalyst is a substance that speeds up the rate of a chemical reaction.
Which of the following is true of tension?
It is crucial to our enjoyment of art.
You can maintain a proper following distance by using the three second rule true or false?
true
What is a substance that speeds up a chemical process?
catalyst-by lowering activation energy
Is the following sentence true or false The reflection you see in a mirror depends on how the surface reflects the light?
true
Is it true that catalyst speed chemical reactions but are not changed by them?
Yes, it's true.
A catalyst for automobile exhausts removes carbon dioxide. True or False?
that is true
Is it true that reactants of a catalyst assisted reaction are known as substrates?
Yes. it is true.
Which of the following acts as a catalyst in catalytic converters?
Metal
What is ture of a catalyst?
It is true that a catalyst is used in chemical reactions to help speed up the reaction by reducing activation energy.
Is it true or false catalysts speed chemical reactions but are not changed by them?
True. That's one of the reasons you use them.
What causes molecules to change?
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.
What does a catalyst do in a chemical reaction?
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.
CFCs are the catalyst in the destruction of Ozone. true or false?
CFC's are catalysts. They fasten the rate of reaction.
Is a catalyst used up in a 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.
What is a true of a catalyst?
The catalyst is not a reactant in a chemical reaction but contribute to the success of this reaction.
Does enzyme is a protein that acts as a catalyst?
Yes. They speed up a reaction without being consumed in it.
