Gr 11 Physical Sciences: Ch 3.4 Energy and bonding
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Questions and Answers

What occurs when atoms move closer than the bond length?

  • The bond energy is released, and the bond breaks
  • The bond length is established, and the bond forms
  • Attractive forces dominate, increasing the bond energy
  • Repulsive forces dominate, increasing the system's energy (correct)

    • What is represented by the bond energy?

  • The energy released when a bond breaks
  • The energy difference between the bonded state and the state where atoms are far apart (correct)
  • The minimum energy point where the bond forms
  • The energy required to form a bond

    • At what point do attractive and repulsive forces balance?

  • When the atoms are far apart
  • When the bond breaks
  • At the minimum energy point (correct)
  • When the bond energy is released

    • What is characteristic of the bond lengths in CO₂?

    <p>They are consistent due to identical bonding environments</p> Signup and view all the answers

    What is the bond length measured between in CO?

    <p>The carbon and oxygen atoms</p> Signup and view all the answers

    What does the graph of energy changes as atoms approach each other typically show?

    <p>An energy minimum and an increase in energy beyond that point</p> Signup and view all the answers

    What is the definition of bond length?

    <p>The distance between the nuclei of two adjacent atoms when they form a bond.</p> Signup and view all the answers

    What determines the bond length of a bond?

    <p>The balance between attractive and repulsive forces when the atoms are at their lowest energy state.</p> Signup and view all the answers

    What is a measure of the bond's strength and reflects the stability of a molecule?

    <p>Bond energy.</p> Signup and view all the answers

    What is a factor that influences bond strength?

    <p>The size of the atoms involved.</p> Signup and view all the answers

    What is the result of the interaction of the three main forces in bond formation?

    <p>A decrease in energy.</p> Signup and view all the answers

    What is the repulsive force that acts between electrons in the outer shells of the atoms?

    <p>A force that repels electrons from each other.</p> Signup and view all the answers

    What is the attractive force that acts between the nucleus of one atom and the electrons of the other atom?

    <p>A force that attracts electrons to the nucleus.</p> Signup and view all the answers

    What is the result of the attractive force between the nucleus and electrons dominating the repulsive forces?

    <p>A decrease in energy.</p> Signup and view all the answers

    What is the significance of the energy minimum point on the graph of energy changes as atoms approach each other?

    <p>It represents the point where the bond forms.</p> Signup and view all the answers

    What can be inferred about the bond properties of Carbon Dioxide (CO₂)?

    <p>The bond lengths are consistent due to identical bonding environments.</p> Signup and view all the answers

    What occurs when the attractive and repulsive forces balance?

    <p>The bond forms.</p> Signup and view all the answers

    What is represented by the energy difference between the bonded state and the state where atoms are far apart?

    <p>The bond energy.</p> Signup and view all the answers

    What is the bond length measured between in Carbon Monoxide (CO)?

    <p>The carbon and oxygen atoms.</p> Signup and view all the answers

    What happens to the system's energy when atoms move closer than the bond length?

    <p>It increases.</p> Signup and view all the answers

    What is the primary factor that determines the bond energy of a bond?

    <p>The bond length of the bond</p> Signup and view all the answers

    What is the relationship between bond length and bond strength?

    <p>Shorter bond lengths correspond to stronger bonds</p> Signup and view all the answers

    What is the effect of multiple bonds on bond strength?

    <p>Multiple bonds strengthen the bond</p> Signup and view all the answers

    What is the initial effect of attractive forces as atoms approach each other?

    <p>The system's energy decreases</p> Signup and view all the answers

    What is the role of the repulsive force between electrons in the outer shells of the atoms?

    <p>It weakens the bond between atoms</p> Signup and view all the answers

    What is the relationship between atom size and bond strength?

    <p>Smaller atoms form stronger bonds</p> Signup and view all the answers

    What is the result of the balance between attractive and repulsive forces in bond formation?

    <p>The system's energy becomes stable</p> Signup and view all the answers

    What is the characteristic of bonds with higher bond energies?

    <p>They are stronger and more stable</p> Signup and view all the answers

    What is the primary factor that determines the bond length of a bond?

    <p>The balance between attractive and repulsive forces</p> Signup and view all the answers

    What is the effect of multiple bonds on the bond strength?

    <p>It increases the bond strength</p> Signup and view all the answers

    What is the relationship between bond length and bond strength?

    <p>Shorter bond lengths correspond to stronger bonds</p> Signup and view all the answers

    What is the result of the attractive force between the nucleus and electrons dominating the repulsive forces?

    <p>The system's energy decreases</p> Signup and view all the answers

    What is the relationship between atom size and bond strength?

    <p>Smaller atoms form stronger bonds</p> Signup and view all the answers

    What is the characteristic of bonds with higher bond energies?

    <p>They require more energy to break</p> Signup and view all the answers

    What is the initial effect of attractive forces as atoms approach each other?

    <p>The system's energy decreases</p> Signup and view all the answers

    What is the role of the repulsive force between electrons in the outer shells of the atoms?

    <p>It repels the electrons</p> Signup and view all the answers

    What is the primary result of the atoms being pushed closer together beyond the bond length?

    <p>The bond length decreases</p> Signup and view all the answers

    What determines the bond length in a molecule?

    <p>The balance between attractive and repulsive forces</p> Signup and view all the answers

    What is the significance of the energy minimum point on the graph?

    <p>It is where the attractive and repulsive forces balance</p> Signup and view all the answers

    What can be inferred about the bonding environment in CO₂?

    <p>The bonding environment is identical around the carbon atom</p> Signup and view all the answers

    What is the relationship between bond length and bond energy?

    <p>As bond length decreases, bond energy increases</p> Signup and view all the answers

    What is the result of the balance between attractive and repulsive forces?

    <p>The bond forms</p> Signup and view all the answers

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