Get Better Grades and a Solid Foundation for AP Chemistry

Study Pre-AP & High School Chemistry with Dr Uma Sharma — build rock-solid fundamentals so AP Chemistry feels familiar, not frightening.

I am a Certified Online Chemistry Tutor with a Doctorate and M.S. in Chemistry, and over 30 years of teaching experience.

We focus on fundamentals first: clear explanations, visual models, and lots of practice, so you are well prepared for both school exams 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
  • Clear, step-by-step explanations of core high-school and Pre-AP topics
  • Highly interactive sessions customized to your needs
  • All sessions recorded for review on iPad / phone
  • Practice quizzes aligned to Pre-AP & high-school chemistry syllabus

Free Trial Session

Get a free trial session in Chemistry with Dr. Uma Sharma.

Group Classes

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

View Recorded Session

Watch a pre-recorded Chemistry class by Dr. Uma Sharma.
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The Learning Process with Dr Uma Sharma

  1. Gain a clear understanding of basics so real comprehension is achieved.
  2. Highly interactive sessions customized as per your needs.
  3. All sessions recorded for review any time later on iPad or mobile.
  4. Practice quizzes based on Pre-AP and High School Chemistry syllabus after every session.

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 and High School Chemistry course is designed to strengthen these basics early. Students learn through clear explanations, guided problem-solving, recorded classes, and regular quizzes, so parents can see steady improvement in confidence, understanding, and preparation for future AP Chemistry.

My Teaching Style

Learning using specially created content. I have conducted nearly 26,000 hours of live classes and have over 25 years of 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

The College Board’s Pre-AP Chemistry is designed to build a deep conceptual understanding of matter and energy at the molecular level. Even if students do not sit a Pre-AP exam, mastering these basics gives them a strong edge in AP Chemistry and high school class tests.

In our experience, students who enter AP Chemistry without a background in Chemistry often struggle in the early units, because they are confronted with higher-level content too quickly. A structured Pre-AP & High School Chemistry course smooths this transition, builds confidence, and leads to better AP exam scores and stronger school grades.

Pre-AP and High School Chemistry Classes

Join small-group online classes with Dr Uma Sharma. Students can optionally add 1-on-1 sessions (paid) for extra help with school work and assignments.

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 often learn better in small peer groups.
  3. Small class size for more attention and better discussion.
  4. All sessions recorded for review any time later on iPad or mobile.
  5. Practice quizzes based on up-to-date syllabus after every session.
  6. Affordable online tutoring with a highly qualified and experienced tutor.
Register for Pre-AP & High School Chemistry Group Classes

Pre-AP Chemistry Group Classes

Group Name No of Hours Days and Time Class Dates Status
Pre AP / High School / Advance Chemistry Summer Course Gp 1 40 Hours
Tue, Thu
5.00 PM to 6.30 PM PT (8.00 PM to 9.30 PM ET, 7.00 PM to 8.30 PM CT)
3.00 hours per week
12-May-2026
To - 11-Aug-2026
 In progress Open for Registration Register Now

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 and High School Chemistry ideal for?
This course is ideal for students who are currently taking high school chemistry, honors chemistry, or Pre-AP Chemistry, and for students who want to build a strong foundation before starting AP Chemistry.
Will this course help my child get better school grades?
Yes. The course focuses on clear understanding of core concepts, regular problem-solving, quizzes, and review. This helps students become more confident in class tests, homework, and school chemistry exams.
My child is weak in chemistry basics. Can they still join?
Yes. The course 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 Pre-AP Chemistry help with future AP Chemistry?
AP Chemistry becomes much easier when a student already understands chemical calculations, atomic structure, bonding, reactions, stoichiometry, gases, and foundational problem-solving. This course prepares that base so AP Chemistry does not feel sudden or overwhelming.
Are the classes suitable if the school does not officially call the course Pre-AP?
Yes. Many schools use names such as honors chemistry, high school chemistry, advanced chemistry, or chemistry foundations. The course is useful for any student who wants a stronger chemistry base before AP Chemistry or advanced high school chemistry.
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 best learning path for the student.

Pre-AP & High School Chemistry Course at a Glance

Pre-AP and High School Chemistry has six main units. Their key topics are outlined below.

Unit 0: 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 1: 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 2: 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 3: 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 4: 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 5: 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