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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 the term for a substance that speeds up chemical reactions but is not used up or permanently changed?
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.
Is it true that a substance produced during a chemical change cannot easily be changed back into the original substance?
generally no, but sometimes yes. if one or more of the products is insoluble or otherwise removes itself from the other products, then the reaction is considered irreversible.
Are enzymes permanently changed in the chemical reactions they aer 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.
During a chemical change the form of a substance is altered but not its identity true or false?
The statement is false: A chemical change of a substance is defined as a change in which the substance is not the same substance after the change as it was before.
Can an element be changed into a simpler substance?
Only in a nuclear reaction, otherwise no.
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 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 is a substance that speeds up a chemical reaction by lowering the activation energy needed for the reaction to occur, without being consumed or permanently altered in the process.
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.
How long does a cell remain formatted in Excel?
It will stay formatted until the formatting is changed to something else, so it can in effect have the same format permanently if it is not changed.
What does varible mean?
A variable is something that may be changed or manipulated during a experiment.
You want to cancell LimeWire permanently?
how do i cacell limewire permanently on my computer?
What is the difference between a phisical change and a chemical change?
A physical change is one you can see. It changes the size, shape, or color of something. A chemical change is one that changes the composition of something. Basically, when a substance is changed into a different substance.
Is it true that Enzymes are permanently changed by the reactions they catalyze?
true
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.
What is the term for a substance that speeds up chemical reactions but is not used up or permanently changed?
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.
