Unit 4: Atomic Structure, Bonding & IMF

Learning Objectives for Unit 4 is located here.

Form follows function is seen in many worlds including both science and art, broadly. How atoms are arranged and their individual structure is arguably one of the most important - yet simple - concepts that many glance over. Do not underestimate the importance of electrostatic attractions and repulsions to chemistry. To be discussed: anatomy of an atom, history of the atom, Bohr's model of the hydrogen atom, representation of orbitals, electron configurations and periodic table, effective nuclear charge, atomic and ionic size, ionization energy, electron affinity, ionic and covalent bonding, bond polarity and electronegativity, drawing Lewis structures and resonance structures, exceptions to octet rule, VSEPR model, molecular polarity, and hybridization.

πŸ” Access to most of the resources here and all practice quizzes are for chemdunn subscribers only.

Gain access for the whole school year now here.

Practice Problems

Atomic Structure & Electron Config πŸ”‘

POGIL Atomic Trends

Photoelectron Spectroscopy (PES)

PES Multiple Choice Practice πŸ”‘

Mass Spectroscopy πŸ”‘

Lewis Structure Practice πŸ”‘

Additional Lewis Structure Practice πŸ”‘

Intermolecular Forces πŸ”‘

Mixed Practice Review WS πŸ”‘

Interparticle Forces & Boiling Points


Practice - Alkanes πŸ”‘

Practice - Alkenes πŸ”‘

Practice - Alkynes πŸ”‘

Unit Practice Problems


Problem #1 (E=hv) (1) πŸ“

Problem #2 (Electron config) (2) πŸ“

Problem #3 (Orbital Box Diagram) (3) πŸ“

Problem #4 (Model of atom) (4) πŸ“

Problem #5 (Ground state electron config) (5) πŸ“


Problem #6 (Para/Dimagnetic) (6) πŸ“

Problem #7 (Trends & Electron config) (7) πŸ“

Problem #8 (Atomic/ion size trends) (8) πŸ“

Problem #9 (Ionization energy trend) (9) πŸ“

Problem #10 (Chemical properties) (10) πŸ“

Problem #11 (Processes representation) (11) πŸ“

Problem #12 (Trend/ Critical thinking) (12) πŸ“


Problem #13 (Coulombic attraction) (13) πŸ“

Problem #14 (Ionic character) (14) πŸ“

Problem #15 (Bond type) (15) πŸ“

Problem #16 (Lewis structures) (16) πŸ“

Problem #17 (Resonance/ Formal charges) (17) πŸ“

Problem #18 (Octet rule) (18) πŸ“

Problem #19 (Resonance) (19) πŸ“


Problem #20 (Molecular geometry) (20) πŸ“

Problem #21 (Molecular geometry) (21) πŸ“

Problem #22 (Dipole moment) (22) πŸ“

Problem #23 (Hybridization) (23) πŸ“

Problem #24 (Bond types - sigma, pi) (24) πŸ“

Problem #25 (Review) (25) πŸ“

Problem #26 (Geometry/ hybridization) (26) πŸ“


Problem #27 (IMF) (1) πŸ“

Problem #28 (hydrate mixture) (2) πŸ“

Problem #29 (emp formula lab) (3) πŸ“

Problem #30 (emp formula lab) (3) πŸ“

Problem #31 (hydrate) (1) πŸ“

Problem #32 (hydrate mixture) (2) πŸ“

Problem #33 (hydrate) (1) πŸ“

Labs/ Demonstrations

Quizzes/ Assessments

Click a quiz to be taken directly to the assessment. Quizzes are only for chemdunn subscribers and require a Canvas account.

Quiz #4.1 -

Video Resources