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
Chemistry lab skills
A-Levels (UK)
GCSE (UK)
Review sessions
Chemistry experiments
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
None of the above
College students
High School students
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
The class began by reviewing the Student's homework on quantum numbers, which the Student completed successfully. The main academic focus was on SN1, SN2, E1, and E2 reactions, where the Student practiced identifying reaction types and products, leading to a deeper understanding of Zaitsev and Hoffman elimination rules. Additionally, the class introduced and explained the rules for drawing resonance structures, with practical drawing exercises. For follow-up, the Student was assigned homework on drawing resonance structures and further practice questions for SN1/SN2/E1/E2 reactions, and a new Open Stacks textbook was discussed as a resource for future learning.
SN1
SN2
E1
E2 Reactions: Key Distinctions
Hoffman vs. Saytzeff Elimination Rules (E2)
Rules for Drawing Resonance Structures
Formal Charge Calculation
Quantum Numbers & Electron Configuration Fundamentals
The Student and Tutor reviewed homework on isomer identification, including enantiomers and diastereomers. They then covered fundamental General Chemistry topics such as quantum numbers and molecular orbitals, before progressing to Organic Chemistry concepts like sigma and pi bonds, hybridization, and resonance. The Student received new practice questions on quantum numbers for homework and agreed to a revised schedule for upcoming sessions.
Quantum Numbers (n
l
mʟ
mₛ)
Electronic Configuration
Resonance
Molecular Orbitals & Bonding (Sigma/Pi Bonds)
Orbital Shapes and Capacity
The Student and Tutor reviewed various types of isomers in Organic Chemistry, including structural, stereoisomers (conformational and configurational), enantiomers, diastereomers, and meso compounds, along with their respective nomenclature (R/S, cis/trans). The Student actively practiced drawing molecular structures and identifying the relationships between different compounds through a series of practice questions. For homework, the Student was assigned additional practice questions focusing on drawing structures, identifying isomer relationships, and reasoning behind those classifications. They also scheduled future sessions to cover bonding and acids/bases.
Isomers: Structural vs. Stereoisomers
Conformational Isomers
Configurational Isomers: Enantiomers
Configurational Isomers: Diastereomers
Meso Compounds
The Student and Tutor engaged in a comprehensive lecture on isomers in organic chemistry. They covered structural and stereoisomers, delving into conformational isomers (Newman projections, cyclic conformations) and configurational isomers (enantiomers, diastereomers, chirality, meso compounds). The session concluded with a discussion on assigning R/S configurations. As homework, the Student was encouraged to review the material, explain the isomer tree to the Tutor in the next session, and practice problems from Khan Academy to solidify understanding.
R/S Configuration & Fisher Projections
Diastereomers & Miso Compounds
Enantiomers & Optical Activity
Conformational Isomers: Newman Projections & Cyclic Alkanes
Isomers: Structural vs. Stereoisomers
Configurational Isomers: Bond Breaking & Chirality
The Student and Tutor engaged in extensive practice of organic chemistry nomenclature, working through 50 complex naming problems across various functional groups and structures. They identified common errors related to carbon chain counting and functional group identification, and reviewed the principles of drawing compounds. The next sessions are planned to cover isomers and isomer practice questions.
Core IUPAC Naming Principles
Hydrocarbon Nomenclature: Alkanes
Alkenes
Alkynes & Cyclic Structures
Oxygen-Containing Functional Groups Nomenclature
Halogen and Nitrogen Functional Groups Nomenclature
Structural Interpretation & Common Nomenclature Errors
Student and Tutor reviewed General Chemistry 1 concepts, including periodic trends, bonding types, molecular geometry, and polarity, by going through a practice packet. The session also introduced the concept of hydrogen bonding and the unique properties of Xenon. They scheduled the next two sessions to complete the Gen Chem 1 review and prepare to begin Gen Chem 2 topics, starting with colloids.
Periodic Trends: Atomic Radius & Ionization Energy
Chemical Bonds: Ionic
Covalent & Polarity
Hydrogen Bonding: Unique Intermolecular Interactions
Lewis Structures
Formal Charge & Resonance
VSEPR Theory: Molecular Geometry & Polarity
Noble Gas Exceptions: The Case of Xenon's Reactivity
Tools & techniques used by chemistry tutor
Interactive 3D models
Flashcards
Video conferencing
Practice worksheets
Digital Note taking
Interactive chemistry lessons
Record lessons
Note taking
Weekend lessons
Mobile joining
Open Q&A

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