| Processes occurring during a chemical reaction where new bonds are formed and existing bonds are broken. | Bond Formation and Breaking |
| What happens during a chemical reaction in terms of bonds? | New bonds are formed, and existing bonds are broken during a chemical reaction. |
| The energy needed to break existing bonds in a chemical reaction. | Energy Requirement for Breaking Bonds |
| Is breaking bonds endothermic or exothermic, and why? | Breaking bonds is endothermic because it requires energy. Endothermic reactions absorb energy from the surroundings. |
| The relationship between endothermic reactions and the breaking of bonds, where energy is absorbed from the surroundings. | Endothermic Reactions and Bond Breaking |
| How is breaking bonds related to endothermic reactions? | Breaking bonds is endothermic, meaning it takes in energy from the surroundings. |
| The energy released when new bonds are formed in a chemical reaction. | Energy Release during Bond Formation |
| Is making bonds endothermic or exothermic, and why? | Making bonds is exothermic because it releases energy. Exothermic reactions transfer energy to the surroundings. |
| The relationship between exothermic reactions and the formation of bonds, where energy is released to the surroundings. | Exothermic Reactions and Bond Formation |
| How is making bonds related to exothermic reactions? | Making bonds is exothermic, meaning it releases energy to the surroundings. |
| The amount of energy required to break a bond or the energy released when a bond is formed. | Bond Energy |
| What does the term "bond energy" refer to in a chemical context? | Bond energy is the energy needed to break a bond or the energy released when a bond forms. |
| The concept that different types of bonds contain different amounts of energy. | Variation in Bond Energy |
| Do all types of bonds have the same amount of energy? | No, different types of bonds contain different amounts of energy. |
| The idea that every type of bond possesses its own specific bond energy. | Bond Energy as a Property of Each Bond |
| Does each type of bond have a unique bond energy, or is it the same for all bonds? | Each type of bond has its own specific bond energy. |
| The unit in which bond energies are quantified, typically expressed in kilojoules per mole (kJ mol⁻¹). | Measurement Unit for Bond Energies |
| What is the standard unit for measuring bond energies? | Bond energies are measured in kilojoules per mole (kJ mol⁻¹). |
| The application of bond energies to determine the overall energy change in a chemical reaction, indicating whether it is exothermic or endothermic. | Use of Bond Energies in Energy Change Calculation |
| How can bond energies be employed to assess the overall energy change in a reaction? | By adding up the bond energies of the reactants and products, one can determine whether a reaction is exothermic or endothermic. |
| The process of finding the net energy change in a reaction by subtracting the total bond energies of the reactants from the total bond energies of the products. | Overall Energy Change Calculation |
| How do you calculate the overall energy change in a reaction using bond energies? | Subtract the total bond energies of the reactants from the total bond energies of the products. |
| The condition in which the energy released during the formation of new bonds is greater than the energy needed to break existing bonds, indicating an exothermic reaction. | Exothermic Reaction Criterion |
| What criterion determines whether a reaction is exothermic based on bond energies? | If the energy released from making new bonds is more than the energy needed to break bonds, the reaction is exothermic. |
| An illustration involving the combustion of methane to exemplify the calculation of overall energy change using bond energies. | Example: Combustion of Methane |
| Provide an example of using bond energies to determine the overall energy change in a reaction. | In the combustion of methane, the energy released from forming bonds is greater than the energy needed to break bonds, making the reaction exothermic. |
| The computation of the overall energy change in the combustion of methane using bond energies. | Calculation of Overall Energy Change in Methane Combustion |
| The characteristic of exothermic reactions having negative overall energy changes, indicating the transfer of energy to the surroundings. | Exothermic Reaction Energy Change |
| The condition indicating that a reaction is endothermic when more energy is needed to break bonds than is released by forming bonds. | Criterion for Endothermic Reactions |
| What is a common feature of the overall energy changes in exothermic reactions? | Exothermic reactions always have negative overall energy changes, signifying the transfer of energy to the surroundings. |
| What criterion determines whether a reaction is endothermic in relation to bond energies? | If more energy is required to break bonds than is released by forming bonds, the reaction is endothermic. |
| The application of bond energies to determine the overall energy change in a chemical reaction, specifically for endothermic reactions. | Use of Bond Energies in Energy Change Calculation for Endothermic Reactions |
| How can bond energies be used to assess the energy change in endothermic reactions? | If more energy is needed to break bonds than is released by forming bonds, the reaction is endothermic. |
| An illustration involving the breakdown of water to exemplify the calculation of overall energy change using bond energies for an endothermic reaction. | Example: Breakdown of Water |
| Provide an example of using bond energies to determine the overall energy change in an endothermic reaction. | In the breakdown of water, more energy is needed to break bonds than is released by forming bonds, making the reaction endothermic. |
| The computation of the overall energy change in the breakdown of water using bond energies for an endothermic reaction. | Calculation of Overall Energy Change in Water Breakdown |
| The characteristic of endothermic reactions having positive overall energy changes, indicating the absorption of energy from the surroundings. | Positive Energy Change in Endothermic Reactions |
| What is a common feature of the overall energy changes in endothermic reactions? | Endothermic reactions always have positive overall energy changes, signifying the absorption of energy from the surroundings. |
| The minimum amount of energy required for particles to react with each other in a chemical reaction. | Activation Energy. |
| What is the term for the minimum energy needed for particles to react in a chemical reaction? | Activation energy. |
| The requirement that particles must collide with sufficient energy for a chemical reaction to occur. | Collisions and Activation Energy |
| What is necessary for particles to undergo a chemical reaction in terms of collisions? | Particles must collide with enough energy for a chemical reaction to occur. |
| A graph that depicts the changes in energy during a chemical reaction, including activation energy and energy levels of reactants and products. | Reaction Profile |
| What is a reaction profile, and what information does it provide about a chemical reaction? | A reaction profile is a graph illustrating the changes in energy during a chemical reaction, including activation energy and energy levels of reactants and products. |
| In an exothermic reaction, the products are at a lower energy level than the reactants. | Exothermic Reaction and Energy Levels |
| How do the energy levels of products compare to those of reactants in an exothermic reaction? | In an exothermic reaction, the products are at a lower energy level than the reactants. |
| The energy difference between the reactants and products in an exothermic reaction is the amount transferred to the surroundings. | Energy Difference in Exothermic Reactions |
| What does the difference in energy levels between reactants and products represent in an exothermic reaction? | The difference in energy is the amount transferred to the surroundings. |
| In an endothermic reaction, the products are at a higher energy level than the reactants. | Endothermic Reaction and Energy Levels |
| How do the energy levels of products compare to those of reactants in an endothermic reaction? | In an endothermic reaction, the products are at a higher energy level than the reactants. |
| The energy difference between the reactants and products in an endothermic reaction is the amount taken in from the surroundings. | Energy Difference in Endothermic Reactions |
| What does the difference in energy levels between reactants and products represent in an endothermic reaction? | The difference in energy is the amount taken in from the surroundings. |
