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.
In a chemical reaction, chemical equilibrium is the state in which both the reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system. This state results when the forward reaction proceeds at the same rate as the reverse reaction.
Chemical bonding is the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world.
Arenes are aromatic hydrocarbons. The term “aromatic” originally referred to their pleasant smells (e.g., from cinnamon bark, wintergreen leaves, vanilla beans and anise seeds), but now implies a particular sort of delocalized bonding. Aromatic hydrocarbons (or sometimes called arenes or aryl hydrocarbon) are hydrocarbons with sigma bonds and delocalized π electrons between carbon atoms forming rings.
Stoichiometry of redox reactions means calculations of the quantities of the oxidizing and reducing agents and their products in oxidation reduction reactions. Redox, on the other hand, is a type of chemical reaction in which the oxidation states of substrate change. Oxidation is the loss of electrons or an increase in the oxidation state, likewise, reduction is the gain of electrons or a decrease in the oxidation state.