An Added Edge

Many advanced concepts are alluded to in the H2 syllabus.
Understanding them in detail will put you on a secure footing to get that H2 A!

Red or Blue?

Try out this famous problem! This problem is a staple in many textbooks as it can be solved in many different ways, each involving a different concept. It’s so important that a variant of it even appeared in the H3 Mathematics paper last year. Have a go! The answer will be released next week. 2n …

Elimination Mechanisms

Ever wondered why NaOH is a reactant used for both nucleophilic substitution and elimination of halogenoalkanes? To understand it, we have to delve deeper into the mechanism of elimination reactions. In this video, I cover the following elimination mechanisms: E1, E2 and E1cb.

Nucleophilic Acyl Substitution

Examples of nucleophilic acyl substitution in the H2 syllabus include esterification and the hydrolysis of acid chlorides. In this video, I share more about this type of reaction.

ARIO Rules for the Stability of Anions

In this video, I cover the ARIO rules to quickly compare the stability of anionic species. It is especially useful when comparing the strength of organic acids.

Drawing Resonance Structures

Resonance is one of the key concepts in Pauling’s Valence Bond Theory, and can be considered as a conceptual framework by which to understand chemical bonding. In this video, I cover how to deduce the contributing resonance structures to the structure of molecules, going through a few classic examples.
Hi there, Chemistry Specialist Ian here, and I’m here to announce “An Added Edge”, a new initiative consisting of a series of videos to teach concepts beyond the H2 syllabus but very useful in answering H2 chemistry questions. The thing is, chemistry is an interconnected science, and many of these more advanced concepts are alluded …