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48929 private teachers in Rns

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48929 private teachers in Rns

Piano · Music theory
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: 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
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DELE C1 specialist with proven records of success. Let’s achieve your goals. (San Juan de Alicante)
Maria
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Maria is an excellent teacher who can adapt her teaching style according to her student. My daughter and I both had lessons with her and we both found the lessons both enjoyable and challenging. We both feel we made progress. My daughter has had several tutors over the years and thinks Maria is, for her, perfect. She makes the lessons fun while having a structure and aim for each lesson so progress is always made.
Review by TIM
Mathematics, Statistics and English Tutoring at Various Levels (The Hague)
Natalia
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I have been working with Natalia for quite a while now and I can say every class with her is enlightening, fun, and most importantly super helpful. I study Statistics with her, and it is not at all my strong suit, however, Natalia made it possible for me to pass courses that otherwise I would have not been able to pass. I would 100% recommend her to anyone who is struggling or would like to improve.
Review by SZOFI
FLE French course - tutoring - FOS (French objective) - I deliver French lessons to children, teens and adults. (Auderghem)
Jérôme
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I have really enjoyed my classes with Jérôme! I really appreciate Jérôme's structured way of teaching, where I will always know the next steps of the process. During the first class we set goals for my learning and the classes are giving me the tools to reach that goal. Jérôme is very encouraging and has help me to get more comfortable with speaking French!
Review by ANNINA
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