Unit 4 - Bondinh, Structure, And Material Properties

Question 1

Polar and non-polar molecules

Answer 1

Non polar: fairly even distribution of electrons around the entire molecule
Polar: have an uneven distribution of electrons around the molecule

Question 2

Van der waal

Answer 2

Dispersion also force caused by the motion of electrons

Weakest of all intermolecular forces

Question 3

Hydrogen bonding

Answer 3

Is the attraction between a hydrogen atom of a molecule to a lone pair of electrons in another molecule

Occurs in molecules containing F, N2 or O2
Strongest force

Question 4

Ionic solid

Answer 4

Positive and negative ions held together by electrostatic attractions

High melting point

Brittle

Conducts electricity as liquid but not solid

e.g. NaCl

Question 5

Metallic solid

Answer 5

Formed by metal atoms

Uniform

Malleable

Conductive

Question 6

Network covalent

Answer 6

Crystals/diamonds

High melting point

Not brittle or malleable

Not conductive

Very solid, strong, and hard