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For a chemical reaction to start, firstly, there should be physical contact between the reactants...!!!
Also, sometimes: a special temperature or pressure, a catalyst, etc.
Wiki User
∙ 13y ago
Wiki User
∙ 16y agoenergy
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What substance lowers the energy needed to start a chemical reaction?
A substance that lowers the energy needed to start a chemical reaction is a catalyst.
Why do you need a catalyst during a enzyme reaction?
Because catalyst decreases the activation energy needed to start a chemical reaction.
Which statement will be describe how enzymes effect chemical reactions?
Enzymes lower the activation energy needed to start a chemical reaction.
What describes the energy of activation?
Activation energy is the least amount of energy needed to start a chemical reaction. It is used to activate atoms or molecules in order for them to begin a chemical reaction.
When a catalyst is present is more or less activation energy needed to start a chemical reaction?
Less Ea.
What substance lowers the energy needed to start a chemical reaction?
A substance that lowers the energy needed to start a chemical reaction is a catalyst.
Energy is the energy needed to start a chemical reaction?
The energy needed to statr a chemical reaction is the 'Activation Energy' , which is given the symbol (Ea).
What compound is needed to start a chemical reaction?
The initial compounds in a chemical reaction are called reactants.
What do chemist call the energy needed to start a reaction?
The energy needed to start a chemical reaction is called the activation energy :)
What substances is needed to start a chemical reaction?
reactants is your answer
What energy is needed to start a chemical reaction?
It varies with the differences in chemical reactions
Is it true that catalysts increase the activation energy needed to start a chemical reaction?
Catalysts actually lower the activation energy needed to start a chemical reaction. This makes the reaction happen more easily.
Is Activation energy is the energy needed to start a chemical reaction?
Yes!
Does catalysts inhibit the activation energy needed to start a chemical reaction?
no a catalyst starts the reaction
What function do catalysts perform in chemical reactions?
They speed a chemical reaction. Add: Catalysts lower the activation energy needed to start a chemical reaction.
What does the activation energy for a reaction represent?
Activation energy is the amount of energy needed to start a reaction.
When a catalyst is present and more or less activation energy is needed to start a chemical rection?
A catalyst reduces the amount of activation energy needed to start a chemical reaction.
