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Describe the role of energy in chemical reactions?
Energy is required to break bonds between atoms in reactant molecules, allowing them to rearrange into new products. This energy is called activation energy. Some reactions release energy, called exothermic reactions, while others absorb energy, called endothermic reactions. Overall, energy is essential for driving chemical reactions and determining whether they proceed or not.
The majority of spontaneous chemical reactions in nature are?
Exothermic, meaning they release energy in the form of heat or light. These reactions tend to occur spontaneously because they result in a decrease in the overall energy of the system.
Is it true or false that all chemical reactions require an initial input of energy called catalysis?
False. Not all chemical reactions require catalysis. Some reactions occur spontaneously, while others may require an initial input of energy in the form of activation energy. Catalysis is a process that lowers the activation energy required for a reaction to occur, but it is not necessary for all reactions.
What are considered Favorable chemical reactions?
Favorable chemical reactions are those that release energy, produce a decrease in entropy, or result in the formation of more stable products. These reactions typically proceed in the direction of equilibrium and are thermodynamically spontaneous. Examples include combustion reactions and exothermic reactions.
What type of chemical reaction cannot occurs spontaneously endothermic or exothermic?
An 'exothermic' reaction gives of energy, and an 'endothermic' reaction absorbs energy.
Describe the role of energy in chemical reactions?
Energy is required to break bonds between atoms in reactant molecules, allowing them to rearrange into new products. This energy is called activation energy. Some reactions release energy, called exothermic reactions, while others absorb energy, called endothermic reactions. Overall, energy is essential for driving chemical reactions and determining whether they proceed or not.
The majority of spontaneous chemical reactions in nature are?
Exothermic, meaning they release energy in the form of heat or light. These reactions tend to occur spontaneously because they result in a decrease in the overall energy of the system.
Is it true or false that all chemical reactions require an initial input of energy called catalysis?
False. Not all chemical reactions require catalysis. Some reactions occur spontaneously, while others may require an initial input of energy in the form of activation energy. Catalysis is a process that lowers the activation energy required for a reaction to occur, but it is not necessary for all reactions.
What are considered Favorable chemical reactions?
Favorable chemical reactions are those that release energy, produce a decrease in entropy, or result in the formation of more stable products. These reactions typically proceed in the direction of equilibrium and are thermodynamically spontaneous. Examples include combustion reactions and exothermic reactions.
What chemical reaction produces the sun and energy?
These are not chemical reactions but thermonuclear reactions.
What type of chemical reaction cannot occurs spontaneously endothermic or exothermic?
An 'exothermic' reaction gives of energy, and an 'endothermic' reaction absorbs energy.
When chemical reactions occur energy is always absorbed?
No, chemical reactions can be endothermic or exothermic.
What type of chemical reaction occurs spontaneously?
Spontaneous chemical reactions are those that release energy and result in a decrease in free energy. They typically involve exothermic reactions where the products are more stable than the reactants, leading to a natural tendency for the reaction to occur without the input of additional energy. Examples include combustion reactions and some types of oxidation-reduction reactions.
Chemical reactions that release energy do if occur or don't?
These are called exothermic reactions.
Why are endothermic reactions rare?
Chemical reactions occur spontaneously when the free energy of the product is less than the free energy of the reactants. Free energy is a combination of thermal energy (heat) and entropy. If thermal energy is absorbed during a reaction, there must be an exceptionally large increase in entropy to give a net reduction in free energy.
Are chemical reactions that absorb energy will occur without a source of energy?
false
Chemical reactions that absorb energy will not occur without a source of energy true or false?
This is true. Energy is required to begin all reactions.
