0
What is the term for the amount of energy that needs to be added for a chemical reaction to start?
Wiki User
∙ 11y ago
What term refers to the amount of energy needed to begin a chemical reaction
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
Chemical energy is energy that is?
added to a reaction in the form of heat.
If heat must be added to a chemical reaction for the reaction to take place the reaction is?
Endothermic reactions need heat. Exothermic reactions give off heat.
What does the term spontaneous mean in chemical reactions?
This is a very fast reaction.
With Reference to molecular collision theory explain what activation energy is?
Collision theory states that when suitable particles of the reactant hit each other, only a certain amount of collisions result in a perceptible or notable change; these successful changes are called successful collisions. The successful collisions must have enough energy, also known as activation energy, at the moment of impact to break the pre-existing bonds and form all new bonds. This results in the products of the reaction. Increasing the concentration of the reactant brings about more collisions and hence more successful collisions. Increasing the temperature increases the average kinetic energy of the molecules in a solution, increasing the amount of collisions that have enough energy. Collision theory was proposed independently by Max Trautz in 1916 and William Lewis in 1918.
What two kinds of energy changes can take place during a chemical reaction?
Two types of energy changes that can occur in a chemical reaction are (1) endothermic and (2) exothermic. Endothermic is where energy is added to the system and exothermic is where energy is given off by the system.
Is activation energy added or just there?
Activation energy is the amount of energy that should be gained by potential reactants, for a reaction to occur. A reaction can be occurred by reducing the activation energy of the reaction or increasing the activation energy of the reactants. Activation energy should be added.
Chemical energy is energy that is?
added to a reaction in the form of heat.
If thermal energy must be added to a chemical reaction for the reaction to take place the reaction is a Exothermic b Reactant c Balanced d Endothermic?
If thermal energy must be added to a chemical reaction for the reaction to take place the reaction is endothermic.
What can a reaction occurs to added to break bonds?
Any chemical reaction need an activation energy.
What must be added to a reactant to start a chemical reaction?
Either an energy source to start the reaction or a catalyst.
What are the substances that are added to a reaction speed up the reaction?
Catalysts. They lower the amount of energy needed for the reaction to occur.
What is the term for the amount of energy that needs to be added for chemical reactions to start?
activation energy
If heat must be added to a chemical reaction for the reaction to take place the reaction is?
Endothermic reactions need heat. Exothermic reactions give off heat.
What will change when a catalyst is added to a chemical reaction?
A catalyst speeds up the rate of reaction, and lower the activation energy needed.
Is heat energy added a liquid causes it to evaporate is it a chemical reaction?
No. It's just a change of state.
What does the term spontaneous mean in chemical reactions?
This is a very fast reaction.
How does the additions of a catalyst affect the energy of activation of a chemical reaction?
A catalyst changes the reaction mechanism to one with a lower activation energy; activation energy is lowered when a catalyst is added
