Chemistry
Atoms, bonding, reactions, and the periodic table — matter and how it changes.
Mr. Liang Chen
Chemistry Teacher
Atomic Structure
Protons, neutrons, and electrons.
Acids & Bases
The pH scale and what it measures.
The Periodic Table
Order among the elements.
Chemical Bonding
How atoms join to make compounds.
Common questions
Who is "Chemistry" for?
It is written for learners at High School level (Grades 9–12), and for anyone older who wants a clear refresher on science. Atoms, bonding, reactions, and the periodic table — matter and how it changes. There is no application or entry test — you can start the first lesson straight away.
How long does the course take?
There are 4 lessons totalling 33 minutes of reading and quizzes, laid out over 2 units. You can move at your own pace — progress is saved as you go.
What do I need to know before starting?
No prior coursework is assumed. The course opens with "Atomic Structure", covering protons & electrons and isotopes, so the foundations are built in rather than expected.
Is the course free?
Yes. Every course on Monster Class is completely free, with no credit card, trial period or paywall. Creating a free account simply saves your progress, XP and place on the leaderboard across devices.