Twig Learning Centre
Chemistry Tuition with Mr. Donnell Koh
Master A-Level Chemistry with ex-RJC lecturer Mr. Donnell Koh. Join engaging physical or livestream lessons focused on building strong foundations and exam success.
Lay a strong foundation in Science with engaging lessons that spark curiosity and build essential skills for future learning.
Master key concepts and problem-solving techniques to excel in O-Level Chemistry with a focus on clarity and exam readiness.
Navigate the rigorous IP and IB Chemistry syllabi with structured lessons tailored to deepen understanding and boost performance.
Achieve A-Level success with comprehensive lessons that break down complex topics and prepare students for demanding exams.
Excel in advanced Chemistry with specialized coaching for H3 and Olympiad levels, designed to challenge and inspire top-performing students.
$150.00
An electrochemical cell is a device that can generate electrical energy from the chemical reactions occurring in it, or use the electrical energy supplied to it to facilitate chemical reactions in it.
The term “halogen derivatives” refer to the organic compounds of halogens which usually contain covalently-bonded halogens. The electronegativity of elements plays a crucial role in deciding which get to bond with halogens and which don’t. The similarity in electronegativity values of H and C render the latter to be as effective as the former to bind halogens.
The gaseous state of matter occurs between the liquid and plasma states, the latter of which provides the upper temperature boundary for gases. Bounding the lower end of the temperature scale lie degenerative quantum gases which are gaining increasing attention. High-density atomic gases super-cooled to very low temperatures are classified by their statistical behavior as either Bose gases or Fermi gases.
The study of chemical energetics deals with the energy changes during a chemical reaction. During chemical reactions, energy is either released or absorbed. Chemical energetics tells us whether a chemical reaction can take place spontaneously or not and about the feasibility of a reaction.
Atomic structure refers to the structure of an atom comprising a nucleus (centre) in which the protons (positively charged) and neutrons (neutral) are present. The negatively charged particles called electrons revolve around the centre of the nucleus.