Online Pre-AP, Honors & High School Chemistry Tutor — Dr Uma Sharma

Build strong Chemistry foundations, improve confidence in school Chemistry and prepare effectively for future AP Chemistry.

I am a Certified Online Chemistry Tutor with a Doctorate and M.S. in Chemistry.

34+ Years of Chemistry Teaching Experience
Teaching Chemistry since 1992.

We focus on fundamentals first: clear explanations, visual models and regular practice, so students are better prepared for school Chemistry and future AP Chemistry.

Take a look at What the parents of students have to say or Session Reviews by students.

Book a Free 20-Minute Trial View Group Class Options
  • Highly interactive groups, normally limited to 3–4 students
  • Clear, step-by-step explanations of core High School, Honors and Pre-AP Chemistry topics
  • All sessions recorded for review on laptop, tablet or phone
  • Topic-wise quizzes, homework and guided problem-solving for regular practice

Free Trial Session

Attend a free 20-minute Chemistry trial session with Dr. Uma Sharma.

Group Classes

Learn Chemistry in a small, focused group with Dr. Uma Sharma.

View Recorded Session

Watch a recorded Chemistry class by Dr. Uma Sharma.
Trusted by Chemistry families in the US, Canada, Middle East, India and beyond
Normally 3–4 Students Recorded Sessions Quizzes & Homework Free 20-Minute Trial

The Learning Process with Dr Uma Sharma

  1. Gain a clear understanding of Chemistry fundamentals before moving to more advanced applications.
  2. Highly interactive classes with direct questioning, discussion and guided problem-solving.
  3. All sessions recorded for review later on laptop, tablet or phone.
  4. Practice quizzes and homework reinforce the topics covered in class.

Take a look at What the parents of students have to say or Session Reviews

For Parents: Why Start Chemistry Foundation Early?

Many students begin AP Chemistry or advanced high school chemistry without being fully comfortable with mole concept, equations, bonding, stoichiometry, and chemical calculations. This often leads to loss of confidence even when the student is hardworking.

The Pre-AP, Honors and High School Chemistry programme is designed to strengthen these basics early. Students learn through clear explanations, guided problem-solving, recorded classes and regular quizzes, helping them build confidence, understanding and readiness for future AP Chemistry.

My Teaching Style

Learning using specially created content. With 34+ years of Chemistry teaching experience, I focus on clearing the basics first with detailed explanations in an easy-to-understand manner.

Solving problems based on topics covered. At the end of each session we go over quizzes on the topic. A carefully curated question bank of Pre-AP and High School–style questions (MCQ and free-response) helps sharpen skills and reveal gaps.

Detailed notes. Comprehensive notes cover every topic and subtopic of Pre-AP and High School Chemistry, and all class sessions are recorded and available for review.

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About Pre-AP and High School Chemistry

College Board describes Pre-AP Chemistry as a course that develops a deep conceptual understanding of matter and energy at the molecular level, with emphasis on scientific reasoning, mathematics and modeling. The official College Board course is organized into four main units.

Chemtopper’s independent Pre-AP, Honors and High School Chemistry tutoring programme is designed to strengthen the underlying Chemistry knowledge and problem-solving skills students need for school Chemistry and future AP Chemistry. It is organized as a broader six-unit foundation programme shown below.

Chemtopper is an independent tutoring provider and is not affiliated with or endorsed by College Board.

Pre-AP and High School Chemistry Classes

Join highly interactive online Chemistry classes with Dr Uma Sharma, normally limited to 3–4 students for direct questioning, discussion and individual participation.

Free 20-minute Trial Session: You can book a free 20-minute trial session to understand the teaching method and discuss the right learning plan for your child. Please click here to request a free trial session.

Highlights

  1. Highly interactive sessions with active participation by each student.
  2. Peer learning & group motivation — students benefit from hearing the questions and approaches of other students.
  3. Normally 3–4 students for more direct interaction and discussion.
  4. All sessions recorded for review later on laptop, tablet or phone.
  5. Practice quizzes and homework reinforce the topics covered in class.
  6. Strong Chemistry foundations for school performance and future advanced Chemistry study.
Register for Pre-AP & High School Chemistry Group Classes

Pre-AP Chemistry Group Classes

Pre-AP, Chemistry Honors and High School Chemistry groups are normally limited to 3–4 students.

Group Name No of Hours Days and Time Class Dates Status
Pre AP / Chem Honors / High School / Advanced Chemistry 2027 Group 2 40 Hours
Tue
8.00 PM to 9.30 PM ET (7.00 PM to 8.30 PM CT, 5.00 PM to 6.30 PM PT)
1.50 hours per week
13-Oct-2026
To - 13-Apr-2027
 In progress Registration Closed —

Pre-AP & High School Chemistry Reviews

Dr Uma Sharma from Chem Topper is my daughter\\\\\\\'s Chemistry online tutor currently. My daughter took up the Chemistry subject in the middle of her Grade 11. She lost more than 1/3 of the Chemistry class in Grade 11. Before Dr Uma Sharma, I had hired a number of Chemistry tutors for my daughter. None of them could help my girl to catch up with the missing parts and she was always ways behind her other classmates. She was very down, frustrated, depressed and very very angry with herself cause\\\\\\\' she had never passed a single test/exam in Chemistry. She thought she was dump in this subject and wanted to give up until she started to have lessons with Dr. Uma Sharma.

Dr Uma Sharma is an excellent Chemistry tutor. My daughter claims that she is not only the best out of the many Chemistry tutors that she has before BUT THE BEST of all her tutors/school teachers that she has ever met in her academic life so far.

Dr Uma Sharma knows the magic of explaining difficult concepts in such a clear and concise way that my daughter does not have to memorise so hard of them but can easily be absorbed by heart. She is a talented and gifted tutor. We have came across many highly qualified tutors and they just don\\\\\\\'t know how to teach, how to explain to student what they know.

Dr Uma Sharma does not give answers to my daughter straightly but guide my daughter step by step to obtain the answers. After a couple of lessons, my daughter took a Chemistry test at school and she passed for the very 1st time. It was just amazing! Dr Uma Sharma help my daughter to pluck up the spirit to study Chemistry. I have to express my sincerely thanks to her. A very good Chemistry tutor indeed.
Both my kids developed a strong foundation in chemistry thanks to Dr.Uma. Explaining complex concepts in a clear, structured, and engaging way made a huge difference in their understanding and confidence.
Hi Uma ji, I hope you are doing well!. I wanted to share some positive feedback with you regarding yesterday\'s YBTC test for the girls. It was the first test, and the kids showed incredible energy and enthusiasm. Although we don\'t have their scores yet, the satisfaction and happiness reflected on their faces were evident. Thank you for your invaluable support.

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Pre-AP & High School Chemistry — Frequently Asked Questions

Who is Pre-AP, Honors and High School Chemistry ideal for?
This programme is designed for students taking High School Chemistry, Chemistry Honors or Pre-AP Chemistry, and for students who want to build strong Chemistry foundations before AP Chemistry.
How large are the Pre-AP and High School Chemistry groups?
These classes are normally limited to 3–4 students. The small group size supports direct questioning, discussion, individual participation and regular interaction with Dr Uma Sharma.
How can this course support school Chemistry performance?
The programme strengthens core concepts through clear explanations, regular problem-solving, quizzes and review. This can help students become more confident with school classwork, homework, tests and Chemistry exams.
My child is weak in Chemistry basics. Can they still join?
Yes. The programme starts from the fundamentals and builds step by step. Important basics such as mole concept, atomic structure, bonding, equations, stoichiometry, acids and bases, and calculations are strengthened before moving to higher-level topics.
How does this programme help with future AP Chemistry?
AP Chemistry becomes easier to approach when a student is already comfortable with chemical calculations, atomic structure, bonding, reactions, stoichiometry, gases and foundational problem-solving. This programme is designed to build that base before or alongside more advanced Chemistry.
Is this suitable if the school does not officially call the course Pre-AP?
Yes. Schools may use names such as Chemistry Honors, High School Chemistry, Advanced Chemistry or Chemistry Foundations. Chemtopper supports students across these school-level Chemistry pathways and helps build the foundation needed for more advanced study.
Are class recordings available?
Yes. Live sessions are recorded so students can review explanations later on a laptop, tablet or phone. This is useful for revision before school tests and for revisiting difficult topics.
What practice is included after class?
Students receive topic-wise practice through quizzes, homework and problem-solving. The aim is not only to understand the topic during class, but also to retain and apply it independently.
What is covered in the free trial session?
The free trial session is for 20 minutes. It helps the student and parent understand Dr Uma Sharma’s teaching style, class structure, recordings, quizzes and the most suitable learning path for the student.

Chemtopper Pre-AP & High School Chemistry Course at a Glance

Chemtopper’s foundation programme is organized into six teaching units. Their key topics are outlined below.

Unit 1: Measurement and Mathematical Procedures
  • Uncertainty in measurements, precision, accuracy and errors
  • Scientific notation, significant figures, calculations using significant figures
  • SI units, prefixes for SI units and conversion
  • Dimensional analysis for conversions, mass, density and temperature
  • Counting of atoms, Avogadro’s number, moles, molar mass and their mathematical connection
Unit 2: Atoms, Molecules, Ions & Their Nomenclature
  • Atomic number, mass number and isotopes
  • Introduction to periodic table and formation of ions
  • Nomenclature of ionic compounds with monoatomic ions
  • Nomenclature of ionic compounds with polyatomic ions
  • Nomenclature of acids and bases
  • Nomenclature of covalent molecules
Unit 3: Properties of Matter and Energy Changes
  • Classification of matter
  • Physical and chemical changes
  • Endothermic and exothermic processes
  • Energy diagrams
  • Specific heat capacity
  • Energy of phase changes – heating and cooling curves
  • Phase diagrams
Unit 4: Chemical Reactions & Chemical Quantities
  • Law of conservation of mass and balancing of chemical equations
  • Representations of reactions
  • Stoichiometric calculations
  • Limiting reactants calculations
  • Theoretical and percent yield
  • Types of chemical reactions and energy changes
  • Electrolytes and non-electrolytes in aqueous solutions
  • Concentration and molarity in solutions
  • Acid–base reactions and net ionic equations
  • pH and pOH of strong acids and bases
  • Stoichiometry of acid–base reactions (acid–base titrations)
  • Solubility rules
  • Precipitation reactions and net ionic equations
  • Stoichiometry of precipitation reactions (gravimetric analysis)
  • Oxidation numbers and redox reactions
  • Balancing of redox reactions by oxidation number method
  • Stoichiometry of redox reactions (redox titrations)
Unit 5: Chemical Bonding and Interactions
  • Atomic structure and electron configuration, valence shell and valence electrons
  • Periodic trends – Coulomb's law, atomic and ionic sizes, electronegativity
  • Types of chemical bonds – bond polarity and dipole moments
  • Intramolecular force and potential energy
  • Bond enthalpies
  • Structure and properties of ionic solids
  • Lewis diagrams
  • VSEPR, shapes & polarity of molecules
  • Intermolecular forces
  • IMFs and physical properties
  • Solutions and mixtures
  • Representations of solutions
  • Separation of solutions and mixtures
Unit 6: Kinetic Molecular Theory, Gas Laws & Reaction Rates
  • Four measurable quantities of gases with units
  • Ideal gas law
  • Gas mixtures and partial pressures / Dalton's law
  • Stoichiometry of gases
  • Kinetic molecular theory and ideal behaviour of gases
  • Rates of reactions
  • Factors affecting the rates of reactions
  • Reaction energy profile
  • Catalysis