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What must be absorb before a chemical reaction can start by the reactants?
energy
What Activation energy play in a chemical reaction?
It indicates how likely a reaction might be, but there are no hard rules. Low activation energy indicates that the reaction is likely to take place spontaneously. In most cases, the reaction must be exothermic as well. There are lots of exceptions to these simple rules. For any reaction to occur, the reactants must gain at least the activation energy.
How does activation energy determine if a reaction will release or absorb energy?
Activation energy is the energy required to start a chemical reaction. If the activation energy is higher than the energy released by the reaction, the reaction will absorb energy and be endothermic. If the activation energy is lower than the energy released by the reaction, the reaction will release energy and be exothermic.
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.
The total amount of energy before and after a chemical reaction is the same .Thus energy is what?
Energy is conserved in a chemical reaction, meaning the total amount of energy before and after the reaction remains constant. This principle is known as the law of conservation of energy.
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.
What Activation energy play in a chemical reaction?
It indicates how likely a reaction might be, but there are no hard rules. Low activation energy indicates that the reaction is likely to take place spontaneously. In most cases, the reaction must be exothermic as well. There are lots of exceptions to these simple rules. For any reaction to occur, the reactants must gain at least the activation energy.
How does activation energy determine if a reaction will release or absorb energy?
Activation energy is the energy required to start a chemical reaction. If the activation energy is higher than the energy released by the reaction, the reaction will absorb energy and be endothermic. If the activation energy is lower than the energy released by the reaction, the reaction will release energy and be exothermic.
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).
How is temperature related to a chemical reaction rate?
Ignition temperature is the temperature a substance needs to reach before it is combustible. Activation energy is the energy required to start a reaction occurring. Temperature is directly affected by heat. Heat is a form of energy. Therefore as you add energy to a substance it heats up. It will reach its ignition temperature and combust. The combustion is the reaction.
How does the time it takes for equilibrium to be reached affected by temperature increases?
An increase in temperature can generally speed up the time it takes for equilibrium to be reached in a chemical reaction. This is because higher temperatures provide more energy to the reactant molecules, increasing their kinetic energy and collision frequency, which in turn accelerates the rate of the reaction towards equilibrium.
What do chemists call the energy needed to get a reaction started?
Chemists call the energy needed to get a reaction started the activation energy. This energy is required to break the bonds of the reactant molecules before they can form new bonds and produce products.
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 is the amount of energy a reaction needs to take place?
The amount of energy needed for a reaction to take place is called the activation energy. It is the minimum amount of energy required for the reactants to transform into products. This energy is needed to break bonds in the reactant molecules before new bonds can be formed.
What energy is needed to start a chemical reaction?
Activation energy is the energy needed to start a chemical reaction by breaking the existing chemical bonds in the reactants before new bonds can form in the products. This energy barrier must be overcome for the reaction to proceed.
