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What is the term for a substance that speeds up chemical reactions but is not used up or permanently changed?
Wiki User
∙ 13y ago
A catalyst speeds up reactions by lowering the activation energy required for the reaction to occur. The concentration of the catalyst does not change and it is neither part of the reactants nor products; it is an intermediate.
Wiki User
∙ 13y ago
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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 is the substance that alters the rate of a chemical reaction without being permanently changed in the reaction?
These are called catalysts.
Can elements be joined together in chemical reactions?
No and element cannot be broken down or changed into another substance through a chemical change. The number of protons in the nucleus of an atom determines the identity of the substance. But, a chemical change involves only the atoms electrons. -SmartyPants94
What is a substance that brings about reactions without being changed itself?
A catalyst
Can a substance produced during a chemical change be easily changed back into the original substance?
No they cannot. Chemical changes never ever go back.
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 is a substance that speeds up a chemical reaction without permanently being changed itself?
A catalyst.
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 chemical and physical reactions?
A physical reaction is were the current substance can be changed in state and then changed back easily to it's previous state, a chemical reaction is the opposite, it is difficult to change it back to its previous state.
Is it true that Enzymes are permanently changed by the reactions they catalyze?
true
What is the substance that changes the rate of chemical reactions without being changed called?
In biological systems an enzyme speeds up the reaction without changing it. In other chemical reactions this function is achieved by 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 true about enzyme inhibitors?
Enzymes are permanently changed by the reactions they catalyze
Substances that are changed when they become involved in chemical reactions are?
Reactants are substances that are changed when they become involved in chemical reactions. Products are the new substances that are formed.
How do substances change after chemical reactions?
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.
