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Why a substance that speeds up a chemical reaction without being permanently changed itself?
Wiki User
∙ 12y ago
A Catalyst.
From wikipedia: "Catalysis is the process in which the rate of a chemical reaction is increased by means of a chemical substance known as a catalyst. Unlike other reagents that participate in the chemical reaction, a catalyst is not consumed by the reaction itself. The catalyst may participate in multiple chemical transformations."
http://en.wikipedia.org/wiki/Catalyst
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoCatalysts increase the rate of reaction without being permanently changed themselves. They do so by providing an alternative reaction pathway with lower activation energy than the pathway followed without addition of the catalyst.
Wiki User
∙ 14y agoA Catalyst speeds up a reaction with out being used or altered itself.
Wiki User
∙ 9y agoThese are called catalysts.
Wiki User
∙ 12y agoENZYME?
Wiki User
∙ 11y agocatalysts
Wiki User
∙ 9y agoA catalyst.
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What substance changes the rate of a chemical reaction without changing itself?
A catalyst is a material that promotes a chemical reaction by its mere presence. It isn't changed or consumed in the process. Wikipedia has more information, and a link is provided.
What are substances that change when the become involved in chemical reaction?
Rust is formed by the chemical reaction of oxygen to iron. This process is called oxidation and occurs when ever iron (or some other materials) are exposed to oxygen. The result makes a new substance: rust.
How is a chemical property different from a physical property?
Chemical properties describe how a substance will undergo chemical reactions and with what. Chemical changes are when one or more substances change to some other substance or substances.
Why is a catalyst written above the arrow in a chemical equation rather than with the reactants?
The enzyme is written above the arrow of the chemical equation because it is involved in the reaction without being changed by it or used up in the reaction. It is not a reactant or a product.
Signs of a chemical reaction?
One of the signs is effervescence ; gas produced. Another sign is change of colour Another sign is if the reaction vessel feels warm/hot/cold/cool to the touch.
What is a substance that alters the rate of a chemical reaction without being permanently changed in the reaction?
These are called catalysts.
What is the substance that alters the rate of a chemical reaction without being permanently changed in the reaction?
These are called catalysts.
What is a substance that speeds up a chemical reaction without permanently being changed itself?
A catalyst.
When a substance has the ability to participate in a chemical reaction what is it called?
It is called a reactant. While catalysts participate in reaction dynamics, they are not permanently changed in the process.
What is a substance that is changed in a chemical reaction Called?
A substance that undergoes change in a chemical reaction is called a reactant.
Are enzymes permanently changed in the chemical reactions they are involved in?
No. Enzymes are not permanently changed in the chemical reactions in which they are involved. After the reaction, they regain their original shape and are free to catalyze another of the same reaction.
Are enzymes permanently changed in the chemical reactions they aer involved in?
No, enzymes are not permanently changed in the chemical reactions they are involved in. Enzymes are catalysts that facilitate chemical reactions by lowering the activation energy, and they remain unchanged after the reaction takes place. They can be used repeatedly in multiple reactions.
What are products reactants and catalysts?
* Reactants: the initial compounds in a chemical reaction. * Products: the final compounds in a chemical reaction. * Catalyst: a chemical compound which help the chemical reaction but not react with the other compounds.
The substances that are produced in a chemical change are called?
chemical reaction is when a substance is changed chemicaly but not physicaly
What is the term for the substance changed during a chemical reaction?
You think probable to the reactants.
If the chemical properties of the substance have not changed has a chemical reaction occurred?
It depends: just try to relate, try to write a chemical equation for and see if there are byproducts. Most likely, if the same chemical still has its same properties After the reaction, a chemical reaction has not occurred.
. How do substances change after a chemical reaction?
After a chemical reaction, some of the bonds have been broken, and some new bonds have been formed. So, that's how a substance is changed after the reaction.
