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What does a enzyme do A Adds heat to a reaction speeding it up B Lowers the activation energy of a reaction C Cools a reaction slowing it down D Raises the activation energy of reaction?
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B Lowers activation energy of a reaction
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∙ 15y ago
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What does an enzyme do to the activation energy needed to start a chemical reaction?
Enzymes are catalysts, they reduce the activation energy.
What do catalysts do to the activation energy of a chemical reaction?
A chemical catalyst is a substance that lowers the required activation energy of a reaction. The activation energy is the amount of energy required to "activate" or start a process, this can be in the form of many things, such as heat. A chemical catalyst can be seen as a kind of shortcut in a chemical process to speed things up. A catalyst can also be used to increase the activation energy, so that the reaction will slow down. This is useful for slowing down reactions that are normally too fast to witness.
What is a biological catalyst that lowers the activation energy of reaction in cells?
It is an enzyme.
Describe the effect of an enzyme on the activation energy in a chemical reaction?
Enzyme decreases activation energy by properly orienting substrate molecules If your looking for the answer from modern biology for 2009, then the answer is: The enzyme speeds up metabolic reactions without being permanently changed or destroyed
What substance increases the rate of a reaction but is not itself changed by the reaction?
It's called a catalyst. A catalyst is present during a chemical reaction but does not participate as a reactant or product. A catalyst lowers the reaction's activation energy, making the reaction easier to happen. In the equation for a chemical reaction, the catalyst's formula appears in small notation above the "yield" arrow (format won't let me show you an example.) An example of a catalyst is potassium iodide (KI) speeding up the decomposition of hydrogen peroxide (H2O2).
What does an enzyme do to the activation energy needed to start a chemical reaction?
Enzymes are catalysts, they reduce the activation energy.
What is activation energy How does a catalyst affect activation energy?
Activation energy is the energy required by a reaction for the reaction to occur. The catalyst lowers the activation energy, making it easier for the reaction to happen.Improvement:A catalyst don't lowers the activation energy. A catalyst creates a alternative route (*) for the same reaction with a lower activation energy.* = as a result of the interaction of the reagents with the catalyst.
Does a catalyst affect a reaction activation energy?
yes. lowers it.
How is enzyes function as catalysts?
It lowers the activation energy of a reaction.
How does the addition of a catalyst affect the energy of activation of a chemical reaction?
It lowers it, so the reaction is faster.
How does the addition of a catalyst affect the energy activation of a chemical reaction?
It lowers it, so the reaction is faster.
How does the addition of catalyst affect the energy of activation of chemical reaction?
It lowers it, so the reaction is faster.
What term is given to a substance which speeds up a reaction and is unchanged after the reaction?
Catalyst- lowers the activation energy of a reaction but is not consumed.
A catalyst speeds up a reaction rate because it?
A catalyst speeds up a reaction rate because it lowers the activation energy. The activation energy is the amount of energy required to start a reaction. If less energy is needed, then the same amount of energy can react more times.
Lower a chemical reactions activation energy?
A catalyst lowers the activation energy without being consumed during a reaction
What do catalysts do to the activation energy of a chemical reaction?
A chemical catalyst is a substance that lowers the required activation energy of a reaction. The activation energy is the amount of energy required to "activate" or start a process, this can be in the form of many things, such as heat. A chemical catalyst can be seen as a kind of shortcut in a chemical process to speed things up. A catalyst can also be used to increase the activation energy, so that the reaction will slow down. This is useful for slowing down reactions that are normally too fast to witness.
What happens to catalysts during chemical reactions?
it lowers the amout of activation energy needed to start the reaction.
