Class notes

Class notes CHEM 121: Chapter 11

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Course
CHEM 121 (CHEM121)

Institution
University Of British Columbia (UBC )

This chapter goes in depth about intermolecular forces (Van der Waals forces). In relates melting points, boiling points, atomic radius and charge to the strength of the forces.

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Uploaded on December 27, 2022
Number of pages 6
Written in 2022/2023
Type Class notes
Professor(s) Laura stirchak
Contains All classes

inter molecular forces
covalent bonds
ionic bonds
london dispersion forces
chemistry
hydrogen bonds
dipole dipole movement
physical properties
temperature
van der waals forces
melting point
boiling po

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Chapter 11: Physical Properties and
Chemical Reactivity

121412022

, * Chemical Reactivity not covered

physical property
·
not changing chemical structure only composition

·

phase changes: changes in
energy

solid ->
liquid - gas

T
need
energy
& Kinetic energy)

The stronger the intermolecular force takes to break
the more
energy it
·

3 Types of intermolecular forces:
- between covalent bonds)

-

Dipole-dipole Interaction
interaction molecule when the partial charge
molecule
of one atom of the molecule
t t
-

opposing charge
-
is to
attracted the
van dev
of another molecule

waals Forces ·

Hydrogen onding
B

London Forces
-

phase changes

imp) [bp)
solid -
liquid <
gas
the stronger the intermolecular force the

higher the melting point (mp) or
boiling point

-

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