15JAN22 AP/College Chemistry Mastery Challenge
11/30 - 37%
Deficient topics: 
Spectroscopy and the electromagnetic spectrum
Cell potential and free energy
Calculating equilibrium concentrations
Resonance and formal charge
Free energy and equilibrium
Periodic trends
Moles and molar mass
Introduction to acid–base reactions
Heat capacity and calorimetry
VSEPR
Hess's law
Concentration changes over time
Structure of ionic solids
Solubility equilibria
Bond hybridization
Representations of solutions
Mass spectrometry of elements
Using the reaction quotient
Weak acid and base equilibria