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It varies with the differences in chemical reactions
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∙ 11y ago
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What is it called when energy is required to start a chemical reaction?
An exergonic reaction is activation energy (or energy of activation). An endergonic reaction is essentially the opposite of an exergonic reaction.
Will an increased temp and an increased concentration speed up a chemical reaction?
Generally, yes. Unless the product of the reaction should be ammonia for example, where a decreased temperature is needed. A catalyst from the transition metals will speed up a reaction too, for example a nickel catalyst in the process of the hydrogenation of margerine as it lowers the activation energy needed for the reaction to start. Increased pressure will also speed up the reaction, no matter what reaction is occurring.
Two chemicals start to bubble when mixed This show is us a chemical reaction occurring?
Yes, bubbling may be a sign for a chemical reaction.
Was the reaction of hydrogen and oxygen endothermic or exothermic How could you tell?
To produce water? Exothermic and very much so.Take a mixture, spark it and it will burn or explode. Heat energy is given off far in excess of whatever energy was needed to start the reaction.
What are the substances you start with in a chemical reaction called?
The reactants
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 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.
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 does the activation energy for a reaction represent?
Activation energy is the amount of energy needed to start a reaction.
Is Activation energy is the energy needed to start a chemical reaction?
Yes!
What do chemists call the energy needed to get a reaction started?
The energy needed to start a chemical reaction is called the activation energy :)
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.
The energy needed to start a chemical reaction is termed as whatg type of energy?
ActivAtiOn!!!
The minimum amount of energy needed to start a chemical reaction is called?
The activation energy.
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.
Does catalysts inhibit the activation energy needed to start a chemical reaction?
no a catalyst starts the reaction
Is the amount of energy needed to cause a chemical reaction to start called activation energy?
yes
