Formal Introduction to Stoichiometry
[S3 and above: Stiochiometry & Mole] Let's say you have a junior whom is currently struggling with Chemistry, specifically the mole...
Invisible Fires
[P4 Science - J1 Chemistry: Heat & reaction between oxygen & ethanol] You often know heat as a dangerous form of energy. The reason kids...
Circle Rotation Paradox
[P6 Maths and beyond: Circles] The following question is a tricky question from 1982 that a lot of people got wrong. It's deceptive (and...
