Bond energy curves and material properties

How is stiffness determined in a bond energy curve?

The steeper the slope is to the minimum, the stiffer the material is.

Why are wider less stiff?

The wideness represents the area for atoms to vibrate. A wider well means more area for atoms to move around and thus is less stiff.

What is barrier energy (Ea)?

The amount of energy required for a task to happen in a system.

What is thermal energy?

The energy in the system used to perform a task.

What is the relationship between thermal energy and barrier energy?

If thermal energy > barrier energy, then the task is likely to happen.

How is Ea represented on the bond energy curve?

Is the depth of the x-axis to the minimum.

What does the depth of a well tell us?

The deeper the well, the higher the melting temperature b/c more energy is able to exist in the curve before repulsion between atoms occur.

How is CTE determined in a bond energy curve?

CTE is based on how wide and asymmetrical the well of the curve is. Wider means more space of atoms to vibrate and expand while asymmetrical means that the atoms are experience large changes in distance from small energy changes.

What is equilibrium bond distance in a bond energy curve?

The center point inside the well of the curve at a given energy level.

What is the relationship between CTE and Ea

The deeper the well, the higher the Ea but the lower the CTE.

What is another name for Ea

Enthalpy of fusion