bond energy

• What determines whether a reaction is endothermic or exothermic?

  The difference in energy between breaking and forming bonds
• What type of process is bond breaking?

  Endothermic process
• Why is bond breaking considered endothermic?

  Energy is absorbed from the surroundings
• What type of process is bond making?

  Exothermic process
• Why is bond making considered exothermic?

  Energy is released to the surroundings
• What characterizes an endothermic reaction?

  More energy is absorbed than released
• What happens to the energy change in an endothermic reaction?

  The change in energy is positive
• What is true about the energy of products in an endothermic reaction?

  Products have more energy than reactants
• What characterizes an exothermic reaction?

  More energy is released than absorbed
• What happens to the energy change in an exothermic reaction?

  The change in energy is negative
• What is true about the energy of products in an exothermic reaction?

  Products have less energy than reactants
• What does each chemical bond have associated with it?

  A specific bond energy
• What does bond energy represent?

  Energy required to break or form a bond
• How is bond energy related to bond formation?

  It is the energy given out when formed