This post collected AP Chemistry question videos and homework assignments on the older lesson site used at the time. Current AP Chemistry videos and materials are now available at www.jjangji.com. It also referred to a combined AP Chemistry PDF attached to the original Naver post.
The student messages shown below were all received after June 2021. The original article celebrated students who later attended the University of Toronto with a scholarship, UCL Pharmacy, and KAIST, while reminding the next group to keep working through the homework.



Stoichiometry homework
The assignment included questions 35, 36, and 37, together with additional stoichiometry practice from the shared material. Students were expected to watch the explanation video, complete their notes, and then attempt the problems independently.
Enthalpy-change homework and questions
The assigned questions were page 23, question 25; page 25, questions 35–37; page 27, question 48; page 28, question 52; and page 30, questions 57 and 59. Questions 37 on page 128 and 51 on page 130 were specifically excluded.
Students were reminded to watch the lesson and finish their notes before solving the questions.
Covalent bonding, periodicity, and equilibrium
For covalent bonding, the assignment listed page 128 questions 40 and 43, page 130 question 47, page 234 question 28, and page 240 questions 51 and 57.
A fifth-day question lesson covered periodicity. The equilibrium assignment for July 1 listed questions 480, 499, 500, 505, 513, and 524.
Watch the bonding video lesson ↗Watch the periodicity video lesson ↗