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Why must an extremely high energy level be reached before a fusion reaction can take place?
Wiki User
∙ 8y ago
Fusion occurs because two nuclei are colliding to create a new nucleus. Because the atoms are positively charged, they naturally repel each other, so high amounts of energy are required to counter-act this force.
Wiki User
∙ 8y ago
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What must be absorb before a chemical reaction can start by the reactants?
energy
Is this statement true or false When nuclear reactions happen the total amount of energy changes It is the mass plus energy before and after the reaction that are equal?
That is false. Assuming an exothermic reaction, e.g., a fusion of hydrogen to helium:The total amount of mass before and after the reaction is the same. (Any energy leaving the atom has a mass equivalent.)The total amount of energy before and after the reaction is the same. (The energy was there previously, in the form of potential energy).
Is chemical energy potential energy?
Yes and no. Yes before the reaction, No after the reaction.There is potential chemical energy among constituent substances in an exothermic reaction - such as in Hydrogen and Oxygen. When the chemicals combine, the reaction liberates thermal energy that was stored as potential chemical energy before the reaction.During the chemical reaction, the potential energy is converted into thermal (and perhaps other forms, such as light) energy.After the chemical reaction, the thermal energy is disspiated, and the potential energy is gone.
What Activation energy play in a chemical reaction?
Activation energy tells you how much energy chemical reaction needs to start. Example paper wont suddenly start burning, but you need first to put some energy in paper, before that reaction starts.
How does activation energy determine if a reaction will release or absorb energy?
Activation energy is really just the minimum amount of energy needed for a chemical reaction to occur. Without it, the energy will stay the same and the substance cannot undergo a chemical change. The thing to look at, I think, is the product of the reaction. For example, in a graph, two substances could have the same activation energy, but after the reaction the amount of energy in substance 1 could be extremely low and the amount of energy in substance 2 could be higher than the activation energy. In substance 1, evidence of an EXOTHERMIC reaction has occurred because the amount of energy in the original substance was lost indicating that it has released energy. Whereas in substance 2, when the amount of energy was higher than the activation energy, it is evident that an ENDOTHERMIC reaction has occurred because the amount of energy after the reaction is higher than it was before the reaction. This shows that substance 2 absorbedenergy making it endothermic. hope this helps!
What must be absorb before a chemical reaction can start by the reactants?
energy
In a chemical reaction what does it take energy to do?
For most chemical reactions, energy is required to supply an "activation energy" required before reaction.
Is this statement true or false When nuclear reactions happen the total amount of energy changes It is the mass plus energy before and after the reaction that are equal?
That is false. Assuming an exothermic reaction, e.g., a fusion of hydrogen to helium:The total amount of mass before and after the reaction is the same. (Any energy leaving the atom has a mass equivalent.)The total amount of energy before and after the reaction is the same. (The energy was there previously, in the form of potential energy).
Can you convert energy in to mass or mass into energy?
No. Nor can you convert mass into energy. In any reaction - including nuclear reactions - both the amount of mass and the amount of energy remain the same, before and after the reaction. For example, the energy that escapes from a nuclear reaction also has a corresponding mass. On the other hand, the energy existed before the reaction as well, in the form of (nuclear) potential energy.
Is chemical energy potential energy?
Yes and no. Yes before the reaction, No after the reaction.There is potential chemical energy among constituent substances in an exothermic reaction - such as in Hydrogen and Oxygen. When the chemicals combine, the reaction liberates thermal energy that was stored as potential chemical energy before the reaction.During the chemical reaction, the potential energy is converted into thermal (and perhaps other forms, such as light) energy.After the chemical reaction, the thermal energy is disspiated, and the potential energy is gone.
What Activation energy play in a chemical reaction?
Activation energy tells you how much energy chemical reaction needs to start. Example paper wont suddenly start burning, but you need first to put some energy in paper, before that reaction starts.
He total amount of energy before and after a chemical reaction is the same. Therefore energy is .?
Conserved.
Why is a spark of energy needed to begin the chemical reaction of burning fossil fuels?
You need to get the reaction above its activation energy before it will start.
The total amount of energy before and after a chemical reaction is the same .Thus energy is what?
Therefore energy is conserved.
How does activation energy determine if a reaction will release or absorb energy?
Activation energy is really just the minimum amount of energy needed for a chemical reaction to occur. Without it, the energy will stay the same and the substance cannot undergo a chemical change. The thing to look at, I think, is the product of the reaction. For example, in a graph, two substances could have the same activation energy, but after the reaction the amount of energy in substance 1 could be extremely low and the amount of energy in substance 2 could be higher than the activation energy. In substance 1, evidence of an EXOTHERMIC reaction has occurred because the amount of energy in the original substance was lost indicating that it has released energy. Whereas in substance 2, when the amount of energy was higher than the activation energy, it is evident that an ENDOTHERMIC reaction has occurred because the amount of energy after the reaction is higher than it was before the reaction. This shows that substance 2 absorbedenergy making it endothermic. hope this helps!
What is degree of reaction?
In turbomachinery,degree of reaction is defined as the ratio of energy transfer due to reaction to the total energy transfer.
Enzymes work by lowering the what?
Also known as activation energy. threshold energy or you can also say enzymes lower the energy barrier
