Chirani Thammita
Hi, I am Chirani Lennon! Let’s navigate chemistry together. Let me know what is bothering you and I will let you in on the chemistry secrets!




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Chirani Thammita
Bachelors degree
/ 55 min
Chirani Your chemistry tutor
I am Chirani Thammita Lennon who is an experience chemistry tutor for nearly a decade. I an experienced in guiding high school and college students with any needs through the guidance to make chemistry an enjoyable subject. I specialize in subjects like biochemistry, organic chemistry, atomic structure, and more in depth knowledge on the lab skills. Grasping complex concepts in chemistry is nothing to do with your knowledge but the way you approach it. Make chemistry a story, game or a fantasy novel. You just need to know the easy tricks all chemists use to gain their success. That’s where I come to play. I excel in covering all bases that is needed for you to excel in homework, lab assignments, group work and assignments that get You points and bonus points. Grades will be nice but understanding the concepts of chemistry is more important. Make sure you are comfortable with this “hard” subject!
Chirani graduated from PennWest University Edinboro

Specialities of your chemistry tutor
Visual learning
Chemistry experiments
GCSE (UK)
International Baccalaureate (IB)
Chemistry lab skills
AI modules
Summary
Podcast
Quiz
Learnings
Flashcard
Spotlight
Zero Risk Guaranteed
15-days refund
Free tutor swap
No cancel fee
1-yr validity
24/7 support
Types of learners for chemistry class
College students
High School students
None of the above
Chemistry class overview
My tutoring style structured, patient, interactive, and engaging, focusing on hands on learning experiences. I specialize in teaching chemistry in all sub groups such as states of , acid, bases and pH. It doesn’t matter if you want help in general chemistry or organic chemistry, i will help you succeed by making you understand the concept with the technique you prefer. Everyone studies and retain information different, spring feel afraid to reach out to tell me what you are compatible and comfortable with. My teaching techniques all include presentations, diagrams, note taking, color coding and many more. The most important method of teaching is communication. I like when You can contact me when you have any questions about any material we covered or any material you don’t understand but needs ur get help with. Therefore, let’s navigate chemistry together!
Your chemistry tutor also teaches
Chemistry
Organic Chemistry
Chemical Reactions
Atomic Structure
Chemical Bonding
Biochemistry

Chemistry concepts taught by Chirani
Student and Tutor completed a detailed practice exam covering various topics including quantum numbers, energy calculations, electron affinity, formal charge, resonance, bond angles, intermolecular forces, and heat calculations. They thoroughly reviewed specific problem areas like nodes in atomic orbitals and clarified several conceptual points. The upcoming session will focus on a new practice paper designed around Lewis structures, formal charge, intermolecular forces, and general bonding.
Heat Calculations: Phase Changes and Temperature Shifts
Bond Angles in Cyclic Hydrocarbons
Electron Affinity and Exothermic Reactions
Particle-Wave Duality: Wavelength and Momentum
Nodes in Atomic Orbitals
Dominant Resonance Structures
The Tutor introduced stoichiometry, including its steps and rules, but pivoted to other topics when the Student indicated it had not yet been covered in their school curriculum. They then discussed various types of chemical reactions, their products, and the fundamental rules for balancing chemical equations, emphasizing the difference between coefficients and subscripts. The session concluded with the Student practicing balancing several chemical equations, with plans to continue this practice and begin discussing bonding in the next session.
Balancing Chemical Equations: The Golden Rules
Understanding Chemical Reaction Types
Coefficients vs. Subscripts: The 'Dad and Kid' Analogy
Introduction to the Mole Concept (n = m/MW)
Solubility Rules: Predicting Dissolution
The Student and Tutor reviewed phase transitions, including vaporization, condensation, melting, and freezing, emphasizing the concept of dynamic equilibrium. They defined boiling point and normal boiling point, practiced calculating total heat for phase changes using specific formulas, and explored the characteristics and types of crystalline solids. The next session will focus on exam preparation covering various topics including advanced bonding and solids/liquids.
Quantifying Energy in Heating/Cooling Curves
Unit Cells and Lattice Recognition
Crystalline vs. Amorphous Solids & Their Types
Enthalpy of Phase Changes
Boiling Point & Normal Boiling Point
Dynamic Equilibrium in Phase Transitions
The Student and Tutor reviewed various Chemistry concepts, including unit conversions, scientific notation, temperature scales, density, and a range of gas laws (Boyle's, Charles's, Gay-Lussac's, Ideal, and Combined). They practiced solving numerous problems applying these laws and focused on common pitfalls, particularly the conversion of Celsius to Kelvin. The next session was scheduled for tomorrow to cover stoichiometry.
Unit Conversions & Metric Prefixes
Scientific & Standard Notation
Gas Laws & Principles
Density Calculations
Temperature Conversions for Chemistry
The Student and Tutor reviewed key concepts in general chemistry, focusing on intermolecular forces and properties of liquids. They covered topics such as molecular states of matter, dispersion forces, hydrogen bonding, viscosity, cohesion, adhesion, and surface tension. The session concluded with an introduction to phase diagrams and their interpretation, with plans to continue with phase transitions and solid-state matter in the next class.
Molecular Environments & Intermolecular Forces (IMF)
London Dispersion Forces & Polarizability
Dipole-Dipole Attractions & Hydrogen Bonding
Properties of Liquids: Viscosity
Cohesion
Adhesion
Surface Tension & Capillary Action
Phase Diagrams & the Triple Point
The session focused on core organic chemistry concepts related to alkenes, including their structure, stability, and reaction mechanisms (SN1, SN2, E1, E2). The Student and Tutor explored electrophilic addition reactions, Markovnikov's rule, Hammond's Postulate, and carbocation rearrangements like hydride and methyl shifts. They also covered specific reactions such as halogenation and halohydrine formation. Additionally, the discussion extended to MCAT preparation strategies, essential prerequisite courses, and advice on choosing a major for medical school applications. For homework, the Student was assigned practice questions on alkene addition reactions, halogenation, and halohydrine formation.
SN1/SN2 and E1/E2 Reaction Mechanisms Overview
Electrophilic Addition: Markovnikov's Rule
Carbocation Rearrangements: Hydride and Alkyl Shifts
Hammond Postulate: Energy & Transition States
Initial Alkene Addition Reactions: Halogenation & Halohydrin Formation
Alkenes: Structure
Stability
and Isomerism
Tools & techniques used by chemistry tutor
Quizzes
Digital Note taking
Video conferencing
Practice worksheets
Presentations
Interactive chemistry lessons
Pets are welcomed
Chat for quick help
Weekend lessons
Mobile joining
Note taking

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Every tutor is interviewed and selected for subject expertise and teaching skill.
