Chemistry Polarity and Metallic Bonds

Intermolecular Forces

forces between molecules

Intramolecular Forces

forces between compounds

Molecular Polarity

attraction between poles in molecules

Dipole

two poles

Malleable

ability to be formed without breaking

Dustile

ability to be pressed thinly without breaking

List Van der Waals Forces; Strongest - Weakest

London Dispersion Forces, Dipole-Dipole Interactions, Hydrogen Bonds

Describe London Dispersion Force

constant motion of electrons creating instant temporary dipole.

Describe Dipole-Dipole Force

force of attraction between polar molecules

Describe Hydrogen Bonds

when H bonds with N, O, or F making a strong dipole-dipole force

Example of London Dispersion Force

Helium

Example of Dipole-Dipole Force

Hydrogen chloride (HCl)

Example of Hydrogen Bond

Water (H2O)

Which intermolecular force has the highest melting and boiling point?

Hydrogen bonds

Explain “Sea of Electrons” and how it contributes to properties

electrons move freely and making it easier to move through contributing to a metal’s conductivity, malleability, and ductility

Compare and Contrast the properties of pure metals with those of metal alloys.

Pure metals are normally good conductors of heat and electricity, and they are malleable and ductile. Metal alloys, on the other hand, are mixed making them stronger and harder.

Evaluate the importance of adding carbon to iron in the production of steel.

Carbon makes the iron more malleable and stronger