The Mole Concept in Chemistry, with solutions to exam-type questions.

Waec-type exercises on Bearings & Distances (with Your Sunshine Tutor)

Defines Bearings, how they are represented, and solves exercises on exam-type questions on Bearings & Distances..

The Mole Concept in Chemistry, with solutions to exam-type questions.

Your Sunshine Tutor explains one of the most important topics in Chemistry- "The Mole" (which is the quantity used by scientists to measure stuff, much like market women measure food stuff)...and 1 Mole contains the Avogadro number of particles...

The topic of Electronic Configuration (in high school Chemistry) with exam-type questions&answers

The old klmn electronic notation can be easily used to determine the group/period the first 20 elements belong to on the Periodic Table.