Stoichiometry, calculations of percentage purity and percentage yield, determining the excess and the limiting reactant

From 24.97 C$ /h

Stoichiometry is a branch of chemistry that deals with the quantitative relationships that exist between the reactants and products in chemical reactions. I have designed the lessons in a systematic way that enhances understanding. You will learn how to calculate the amount of product that is going to be formed when you are given the amount of reactants and the yield. You will learn how to use balanced chemical equations and molar rations to figure out the excess and the limiting reactants. You will also learn how to calculate percentage purity of the reactants and percentage yield of a given chemical reaction.

Extra information

since it is online, wiffi and a gadget to use is a must

Location

Online from South Africa

About Me

Hi. I am Teacher Benjamin. I am a very passionate teacher who uses real life examples in order to enhance understanding. I am a patient teacher who does not mind explaining concepts over and over again, using different approaches in order to enhance understanding. I have got experience in teaching chemistry and physics from beginners, through the intermediate phase all the way to high school. I enjoy the thrill that comes with assisting students to achieve their academic goals

Education

I am a holder of a Bachelor of Science (Honours) Chemistry which i obtained from the National University of Science and Technology in Zimbabwe. I also obtained a Bachelor of Technology from Unisa.

Experience / Qualifications

i have a total of 14 years experience in teaching Chemistry and Physics to beginners, intermediate and high school students, "O" Level and "A" Level students. I have helped countless students to achieve their academic goals, both online and physically.

Age

Teenagers (13-17 years old)

Adults (18-64 years old)

Student level

Beginner

Intermediate

Advanced

Duration

60 minutes

The class is taught in

English

Skills

Chemistry

Physics

Availability of a typical week

(GMT -05:00)

New York

Online via webcam

Mon

Tue

Wed

Thu

Fri

Sat

Sun

00-04

04-08

08-12

12-16

16-20

20-24

Acids and Bases. Neutralization reactions and titrations

24.97 C$ /h

Acids and bases is a division of chemistry that involves the classification of acids and bases and the different reactions that involve acids and bases. I have designed the lessons in a systematic way that enhances understanding. You will learn how to write balanced chemical equations for the reactions between acids and bases. You will also learn how to figure out the suitable indicate for any given titration. You will learn more about the pH scale and the calculations for determining the pH of a given solution. You will also learn the hydrolysis of a salt and the calculations of determining the pH of a salt solution.

Electricity, Electric current, voltage, and resistance. Electric circuits

24.97 C$ /h

Electricity is a division of physics that involves the flow of charges in a conductor. The three variables that are essential in electricity are voltage, electric current and resistance. I designed the lessons in a systematic way that enhances understanding. You will learn how apply Ohms law to calculate one variable given the other two. You will learn how to do electric circuit calculations that involve series, parallel and hybrid circuits.

5.0

(4)

I have 22 years of teaching experience at international schools as a Chemistry teacher in different countries and currently I`m working as an A level Chemistry teacher at an independent school in England. I have a master's degree in chemistry.
I am very calm and patient.

My courses are intended for middle and high school students of all levels including IB (SL&HL), IB MYP, Cambridge AS&A level, IGCSE Chemistry.

I give my students the technique of working to get the best grades.

Feel free to contact me for more information.

Raef

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Graduated and experienced teacher with results from ALL of my students with honors, I give private or group lessons in Mathematics - Analysis - Matrices - Statistics - Algebra - Geometry - Physics - Mechanics - Electricity - Chemistry - Organic Chemistry - Biology, Geology to students from primary to Terminale, 1st year and 2nd year of university for online courses by a PROFESSIONAL method on a special education platform through a link that serves as a table that includes spaces, dozens of pages, equipped with tools (pens of different colors, ruler, geometric tools, eraser, etc.) and the possibility of saving, writing and projecting the work on this board.
This course is also intended for students of Lycée, CNED and those of the English program (IB Interntaional School or European section in english)
Special reduced rate offer for the group of 4 students only in virtual class The hourly rate will be shared by the 4 students.
The conversation is carried out by Skype or Zoom.
Do not hesitate to write to me for more information.

David

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I am a Math and Physics tutor with over 10 years of experience, backed by an MIT background and training from top technical schools. My lessons are unmatched, blending charisma, passion, and innovative teaching methods to create a magical learning experience. I focus on highly personalized, one-on-one sessions, understanding each student’s unique mindset to unlock their full potential.

Teaching is my true passion! I genuinely enjoy sharing my knowledge and skills with those in need. My friendly and supportive attitude allows me to establish a connection with every student right from the first lesson. So, if you're feeling demotivated and down, don't worry! I'm here to help you find the motivation you need for both academic and personal success.

If you have any questions, please feel free to contact me anytime here. I will respond to you as soon as possible!

Mohamed

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(4)

It is important to me to teach my students while adopting an active teaching method. I put all my experience acquired as a head teacher and also that of my academic career to the service of their success.
My seriousness, my listening and my kindness allow me to overcome difficulties and excel in:
- Math,
- Chemical Physics,
My courses are aimed at students:
- the French system from 6th to Terminale
- French mission schools
(Speciality: Mathematics, PC).

Bibek

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(4)

Hi! I am a Ph.D. researcher in Physics at the University of Cologne, Germany. Recently, I graduated from the University of Groningen in the Netherlands with a Master's degree in Nanoscience (w/ cum Laude). I offer private tutoring for high school and/or university-level students so they can understand the fundamental concepts and excel in their studies. I have teaching experience of 5+ years in Physics and Mathematics to both high school and university-level students.

I have expertise in the following courses:
0. All high school topics

1. Classical Physics (Newtonian mechanics, linear motion, rotational motion, collision theory, angular momentum, and many more)

2. Modern Physics (Electrostatics, Maxwell's law, motion of electrons in electric and magnetic fields, Quantum theory of light, Compton scattering, photoelectric effect, and many more)

3. Optics (Ray optics, wave mechanics, reflection and refraction, Fresnel's law, polarizer, matrix optics, interference, diffraction, and many more)

4. Quantum Mechanics (Schrödinger equation, Heisenberg uncertainty principle, commutation relation, the addition of angular momentum, matrix representation, density matrix, and many more)

5. Solid-state Physics (Crystal structure, wave diffraction, and the reciprocal lattice, crystal vibrations (phonons), the density of states, semiconductor physics, pn junction, transistors, and many more)

*Note that the sessions will be held online (via Discord/Zoom/Microsoft Teams).

Jeremy

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Passionate & empathetic teacher. I have a Master's in Physics with honors from the University of Leicester (which was featured at the time as a top 5 Physics university in the UK by The Guardian) and a - french - European School diploma in which I achieved 90% in Physics and 85% in Maths.

Helping others understand difficult topics and skills is something that I am very passionate about as an empathetic person. I have experience teaching Physics and Maths to kids from unprivileged backgrounds at the homework school in Saint-Gilles (CASG du Service Social Juif asbl) as well as 5 years of private teaching.

In my classes, I aim to:

- help students achieve better grades in exams/tests in all branches of Physics & Maths
- clearly explain and break down topics
- give context and or example applications of topics (to improve understanding and memorization)
- help with ADHD & other learning disabilities
- give practical advice for university applications (eg. UCAS in the UK) and discuss the exciting Physics research/work and projects you can work on later in life.

Physics has a plethora of useful and fascinating applications, from the detection of Gravitational Waves and Gamma-Ray Bursts to the development of novel Medical Imaging techniques and Nano-technology (eg: smartphones). It is a subject that I am very passionate about and I hope to make use of my years of experience and extensive knowledge to help you understand and love the subject! My lessons will always be tailored to the individual needs of the student, so please do not hesitate to contact me if you have questions!

Mohamed

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(4)

Teaching the entire mathematics curriculum to students from the third grade to the third preparatory grade, while following up on the student’s level and working on the lessons with which he faces difficulty in understanding, with a focus on the solution to master any skill that the student must master, you will feel the necessary confidence before entering the exam.

Robert

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(4)

As a Franco-Belgian teacher, I offer private lessons in physics, chemistry and biology for secondary and higher levels. I specialize in secondary level up to 5th year Belgian.

I travel, if necessary, to your home in the Brussels region as well as in Walloon and Flemish Brabant, with a minimum course duration of 2 hours. With extensive experience, I offer numerous exercises to consolidate knowledge. Distance learning is also possible via platforms such as Skype, Facebook, etc. For students in France, lessons are done exclusively remotely.

Do not hesitate to contact me to organize your lessons according to your needs and availability. I am here to help you strengthen your skills in these subjects in an effective and personalized way. Courses tailored to your needs will allow you to progress quickly.

Benson

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Work with me in your IB journey. I have over 6 years of teaching experience with international students from Europe, Asia and America. I give home works and assignments on a regular basis.
Book a session with me in IB to get started. I interact with my students during lessons. After each lesson, i give students home works and assignment.

The International Baccalaureate (IB) offers several programs in Europe, including the IB Diploma Programme, the European Baccalaureate, and the IB's Primary Years Programme, Middle Years Programme, and Career-related Programme:

Prashil

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(4)

Welcome to my Foundation Course in Science and Maths, specially designed for primary, secondary, and high school students in Amsterdam. This course aims to build a strong foundation in these critical subjects, ensuring students excel academically and develop a genuine love for learning.

My teaching approach is focused on making learning enjoyable and engaging. I incorporate interactive activities and hands-on experiments to bring Science and Maths concepts to life. By involving students in these dynamic learning experiences, I aim to transform abstract concepts into tangible understanding. Each session is thoughtfully designed to keep students interested and motivated, minimizing fatigue and maximizing retention.

I believe in simplifying complex topics, breaking them down into easy-to-understand segments. This approach helps students grasp and retain challenging concepts with ease. Techniques such as mnemonic devices, visual aids, and real-life examples are integral to my method, ensuring that formulas and concepts are not just memorized, but truly understood.

Regular assessments are conducted to track student progress and identify areas needing improvement. These tests also prepare students for their school exams, ultimately boosting their confidence. I understand the importance of keeping parents informed and involved in their child’s academic journey. That's why I provide weekly reports detailing their child’s progress, strengths, and areas for improvement. This continuous feedback loop ensures that parents are aware of their child’s development and can support their learning at home.

Encouraging words and positive feedback are integral to my teaching method. I strive to build students' self-confidence and to instill a love for learning through positive reinforcement. Setting achievable goals for each student, I celebrate their successes and motivate them to strive for excellence. This goal-setting approach not only drives academic success but also fosters a sense of accomplishment and self-worth.

As a tutor, my satisfaction comes from seeing my students excel and reach their full potential. My ultimate goal is to empower students with the knowledge and skills they need to succeed in Science and Maths. I am always available to support my students, offering additional help and resources as needed to ensure their success.

I foster an open environment where students feel comfortable asking questions, no matter how simple they may seem. This curiosity drives deeper understanding and encourages a proactive approach to learning. By incorporating games, puzzles, and interesting activities, I ensure that learning remains fun and engaging, keeping students excited about the subjects.

Join my Foundation Course in Science and Maths and watch your child develop a strong foundation, confidence, and a genuine love for these essential subjects. Let’s work together to achieve academic excellence and make learning a fun and rewarding experience. “Excel in Subjects, Soar in Confidence!”

Dr.Ibrahim

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This course offers an integrated introduction to the core areas of science, including biology, physics, earth science, and environmental science. Students will explore scientific concepts, principles, and methods through hands-on experiments, observations, and problem-solving activities. Emphasis is placed on developing scientific literacy, critical thinking, and an understanding of the scientific method. The course encourages curiosity about the natural world and prepares students to apply scientific knowledge to everyday life and future academic study.

Eugene

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(4)

I am a 2021 IGCSE graduate and a 2023 IB graduate, now studying Veterinary Medicine at the University of Edinburgh. Having recently completed these programmes myself, I understand the challenges students face and how to overcome them effectively.

With 1 year of experience teaching the IGCSE syllabus and 1 year of experience teaching the IB syllabus, I specialize in helping students master subject content, strengthen exam techniques, and build confidence. My lessons are tailored to each learner’s pace and goals, ensuring steady progress and measurable results.

What I offer:
- IB & IGCSE syllabus coverage across core and extended levels
- Exam preparation with past paper practice and detailed feedback
- Structured guidance for Internal Assessments (IA), Extended Essays (EE), and coursework
- Study and time-management strategies designed to reduce stress and boost performance
- A supportive, relatable learning environment from someone who has recently been through the same exams successfully

Rimsha

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(4)

I just love making chemistry click for you. I'll turn every difficult concept into a story you will remember lifetime. My students go from “I’m doomed” to crushing tests with better scores. Learning is fun... You just need a teacher who refuses to let it be anything else. I guarantee you better results.

Nicolas

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(4)

I am a dynamic and demanding teacher who gives private lessons in Physics-Chemistry as well as Mathematics.

I graduated from teaching seven years ago, after a masters in physical sciences with honors, and I teach in college and high school since.
I have also been preparing students for the Baccalaureate Science for many years, all of whom have been awarded very good honors.
I also prepare my students for different exams (Matu, Bac, preparation for EPFL, etc...)

I make sure to rework the basics so that the student can progress quickly. It is important to me that my students acquire a solid foundation of knowledge.
I also give effective work methods that will allow him to progress much more quickly and so he can regain self-confidence.

I can travel to the student's home or also conduct the lesson via Zoom/Google Meet.

Ashish

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(4)

🚀 Master Physics and Maths with Confidence – Your Success Story Starts Here!

Struggling with Physics? You’re not alone—and I’m here to change that.
With 20+ years of teaching experience and having guided 20,000+ students worldwide, I know exactly how to help you master Physics with clarity, confidence, and long-term understanding.

📘 What I Teach (All Levels – All Exams)
🔵 Physics

✓ AP Physics 1
✓ AP Physics 2
✓ AP Physics C (Mechanics & E&M)
✓ Cambridge A-Level / AS / IGCSE / O-Level Physics
✓ IB Physics HL/SL (Including IA support)
✓ CBSE / ICSE / ISC Physics (Grades 6–12)
✓ JEE Main & Advanced Physics
✓ NEET Physics
✓ SAT Subject Physics
✓ NTSE, Olympiads, KVPY
✓ University-Level Physics (B.Sc, B.Tech, Engineering