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Trusted teacher: Lesson: Electrochemistry Duration: 60 minutes Grade Level: Advanced Science / Chemistry (IGCSE, A Level, IB) Main Objectives: By the end of this lesson, students should be able to: 1. Define electrochemistry and explain its importance. 2. Describe the difference between electrolytic and galvanic (voltaic) cells. 3. Write half-reactions and overall cell reactions. 4. Calculate standard electrode potentials and predict the direction of electron flow. 5. Understand practical applications of electrochemistry in everyday life. Lesson Outline / Brief Notes: 1. Introduction to Electrochemistry (10 minutes) Definition: Electrochemistry is the branch of chemistry that deals with the relationship between chemical reactions and electricity. Key Concept: Redox reactions involve the transfer of electrons. Real-life example: Batteries, electroplating, corrosion prevention. 2. Galvanic (Voltaic) Cells (15 minutes) Composed of two half-cells connected by a salt bridge. Oxidation occurs at the anode, reduction at the cathode. Example: Daniell cell Zn(s) | Zn2+(aq) || Cu2+(aq) | Cu(s) Oxidation: Zn → Zn2+ + 2e− Reduction: Cu2+ + 2e− → Cu 3. Electrolytic Cells (10 minutes) Require an external power source to drive non-spontaneous reactions. Example: Electrolysis of molten NaCl At cathode: Na+ + e− → Na At anode: 2Cl− → Cl2 + 2e- 4. Standard Electrode Potentials (10 minutes) Electrode potential measures the tendency of a species to be reduced. Example: Zn2+/Zn: -0.76 V Cu2+/Cu: +0.34 V Predict electron flow: Electrons flow from Zn to Cu in a Daniell cell. 5. Applications of Electrochemistry (5 minutes) Batteries (Li-ion, lead-acid) Electroplating (silver plating, chromium plating) Corrosion protection (galvanization) Exercise (10 minutes) 1. Short Answer Questions: a. Define electrochemistry. b. Identify the anode and cathode in a zinc-copper galvanic cell. c. Explain the difference between galvanic and electrolytic cells. 2. Calculation: Given: Zn2+/Zn: -0.76 V Cu2+/Cu: +0.34 V Calculate the standard cell potential of a Daniell cell. 3. Application Question: Describe one practical application of electrochemistry in everyday life and explain how it works.
Chemistry
Trusted teacher: 👋 Hello! I’m Latifa, A passionate and experienced teacher specializing in Classical Arabic, Moroccan Darija (dialect), and Arabic Egyptian dialect. I’m here to make your learning journey enriching and enjoyable! 🔹 Customized Lessons for All Ages and Levels: Whether you’re a primary, middle, or high school student—or an adult learner—my lessons suit your needs and level. Don’t worry if you’re a beginner; every journey starts with a first step! 🔹 Comprehensive and Engaging Teaching Methods: - 📖 Reading: Expand your vocabulary and deepen your understanding of texts. - ✍️ Writing: Master the alphabet and develop proper writing techniques. - 👂 Listening: Enhance your ability to grasp pronunciation and subtle details. - 🗣️ Speaking: Practice real-life conversations to build fluency and confidence. 🔹 Exclusive Benefits of My Classes: - 📌 Personalized study plans designed to match your goals and pace. - 📝 Homework assignments to reinforce your learning and track progress. - 📲 Continuous support via WhatsApp for questions outside lesson hours. - 🌟 Modern teaching techniques blending creativity with simplicity. 🔹 Flexible Schedules to Suit Your Needs: Available daily, including Sundays: ⏰ From 9:00 AM to 2:30 PM ⏰ From 3:00 PM to 10:00 PM 🔹 Clear Goals and Guaranteed Results: Whether you’re preparing for exams or simply aiming to enhance your language skills, I’m committed to helping you achieve your objectives with confidence and care. Don’t wait any longer! Begin your journey to mastering Arabic with me today and make it an unforgettable learning experience!
English · Arabic · Communication skills
Trusted teacher: In these neuro-divergent times, the binary division of "one language or two" in bilinguals is perhaps due some contestation, which students are capable of providing. I have always found bilingual production models (and the ubiquitous Powerpoint slide) that university teachers provide a hindrance because of their lack of explicitness and discussion - they are just not relatable as presented nor do they provide much information or examples for monolingual students. Code-switching, a by-product of bilingualism, is now a term that is even found in minority-ethnic neighbourhood grafitti ("can white people code-switch" a found example). Please note that this is a linguistic term, used for switching between two languages, and not between local or social varieties of English. My personal position is that there is no such thing as bilingualism: there is always a language that suffers attrition, and one language that prevails, mostly because of its prestigious standing over the other language. On the other hand, a child exposed to more than one language cannot be truly monolingual. For this course (very popular at universities around Europe both at undergraduate and postgraduate level) we shall go through the terms used to discuss bilingualism, in detail, and then discuss, with the help of published books and articles, who can be considered bilingual (or are we all, one other language lying dormant?). Can bilingualism be defined by the speaker, instead of the "community"? Can it be imposed by the State? Does a bilingual brain function in the same manner as a monolingual brain? These are research questions that emerge as dissertation or thesis topics both at undergraduate and postgraduate courses.
Grammar · Social studies · Child development
Trusted teacher: Hi, Tutor Kelvin here. Your MATHS and SCIENCE Tutor. MATHS; Many students fail Maths because of unsharpened analytical skills. As an experienced Tutor, my aim is to bridge in that gap.No, student must ever be troubled with a concept that do have a solution . Q.Why you will love Maths after the lessons? 1.I will help break down concepts to the level of your understanding. 2.I will make sure that I explain all the steps required per topic. 3.At the end of the day, I could've made sure you know and understand the requirements for each question.This will be achieved by exposing you my student to final examination papers. NOTE; I am a straight forward Tutor who strives to bring out the best in every student on time.I am always innovative by using interactive mode of Teaching Methodology. I use well structured notes and past papers.Once I teach my student/s a topic, I make sure the lesson is concluded by attempting Examination Questions together. In addition, each lesson takes 1 hour (60 minutes) duration.That time , is fair enough to have had all the lesson objectives met. I look forward to take you through in SCIENCE which comprises of: •Chemistry This branch mainly contains atomic structure, the periodic table, rates of reactions, oxides, electro chemistry, acids, bases and salts etc •Physics This branch contains matter and how energy is converted from one form to another.That means, force is included, electricity, motion, electronics, uses of metals, among others. •Biology This branch of science deals with living and non living things.Scope of living things; Cells, tissues,organs, systems, organisms such as trees, frogs, worms, bacteria, human beings etc On the other hand, non living things includes; Air, Soil, Water and Sun Light Note: I take keen interest in providing quality lessons to all students regardless of their conditions.In addition, I make sure I use the best tactics that suits each student for effective learning. I also apply where necessary the utmost psychological skills to each student so that i ignite the learning zeal. That ensures meeting the need of each student so that I help bring out the best in each student. Every student is valued 🏆 and I strive to bring out his/her best in approaching all the science based subjects Booking me for a class guarantees excellent grades. Once you book me, I look forward to take you through as your Tutor. Best regards, ~Kelvin
Earth and life sciences · Science
Trusted teacher: The skype courses are optimized thanks to the fiber and by a high definition web camera, which allows a course in optimal conditions. Plastic arts course, college and high school, plastic arts baccalaureate file. ST2A applied arts course, pre-competition by skype. Initiation or improvement in the different techniques of drawing and painting, observation drawing, portrait, study of perspective followed by urban sketches outside, travel diary and watercolor. Portrait technique, sketches of characters, perspective, using the various drawing tools pencil, charcoal, red chalk, markers and watercolors. The basics and improvement of oil painting. The basics of fundamental drawing adapted to children and adolescents with pedagogy, adapted to the rhythms and to the sensitivity of each one. Experience with children from 6 years old and adolescents in private lessons and for institutions. Applied arts course, preparation for the applied arts baccalaureate and preparation, plastic arts baccalaureate file. MANA from applied arts schools, professional bac. The courses are adapted according to the levels and the expectations of the pupils, a pedagogical progression will be developed. Professional artist, with 20 years of experience, exhibition in Parisian galleries. 17 years of experience in teaching adults within a works council of a large company. Preparation for competitions: Fine arts, Applied arts. Applied Arts upgrade. Follow-up in bac ST2A, preparation for competitions: Gobelins, Max. Vox ... School of Fine Arts in Paris. Plastic arts option tray folder
Drawing & sketching · Painting
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Private Math Tutoring by Experienced Teacher For all Levels. (Rome)
Hamid
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rating green star
Dr. Ettayyebi is by far one of the most patient educators I’ve ever met. Not only is he deeply knowledgeable in mathematics and logical reasoning, but he’s also incredibly personable and easy to talk to. I’m embarrassingly bad at math, yet he’s never made me feel ashamed of it—something I can’t say for most tutors I’ve had in the past. Instead, he’s gone the extra mile to create a tailored learning path for me and all his students, one that meets our goals while strengthening our weak spots. I highly recommend Dr. Ettayyebi for learners of any age—whether you’re brushing up on existing material or prepping for an entrance exam. If you’re looking for a customized educational plan with a hands-on approach (though he also offers online sessions), Dr. Ettayyebi is your guy.
Review by SYLVIE
Cito Training & Tutoring for Primary School – All Subject Areas and Groups! (Eindhoven)
Hala
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rating green star
My daughter has had a few lessons with Hala and they have been great. I already see a shift in her confidence with regard to her ability to solve maths problems she was having difficulty with. We hope to continue to work with Hala as my daughter progresses through basisschool.
Review by LISA
Private lessons in Science (physics, chemistry and biology) - Secondary level, CESS, French, European & International Baccalaureates (Schaarbeek)
Sarah
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rating green star
Sarah is a serious subject expert and talented conveyor of complex information - totally committed to getting the best possible student experience and transfer of knowledge in highly competent and state-of-the art manner either in person or in a virtual setting.
Review by DAVID
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