Unit 2 AP Chem (Topic 2.2)

What does a graph of PE(potential energy) represent?

It represents the distance between PE for the description between atoms.

What does a graph show?

It shows both the equilibrium bond( the separation between atoms at their lowest PE) and the bond energy, the energy required to separate atoms.

What is a covalent bond?

Covalent bond is the bond of the length influenced by the size of the atoms and bond order

Are bonds with a higher bond shorter or larger?

They are shorter and have larger bond energies.

Smaller ions equal what?

They equal stronger attractions.

What happens when you go down the periodic group to the atoms?

The atoms get larger and bonds get longer meaning weaker bond energy

When do covalent bonds happen?

They are between two non-metals when they share electrons and happen at the lowest energy state. This happens because the attraction between the nuclei is greatest and the repulsion between electrons and nuclei is the lowest.

What happens if the atoms are too close together?

The nuclei will repel and if they are too far apart the attraction won't be strong enough to hold them.

What is lattice energy?

The energy to separate ions in their ionic compounds is known as the change that happens when the energy that takes place when gaseous ions are combined to form an ionic solid.

What can lattice energy be represented as?

It can be represented using Coulomb's law, where the energy is proportional meaning it is related by size,etc to the charges.

What does larger charges mean and what does smaller radii mean?

Larger chargers= more attractions=more energy required to separate ions

Smaller radii= more attractions= more energy required to separate ions.