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Microbial fuel cell
Microorganisms can supply electrons by decomposing organic materials and in this way generate a potential difference. For example, a biofuel cell can function as a battery.
The document contains instructions for use that describe how to make a …
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The equilibrium constant Kc is not dimensionless
The equilibrium constant Kc is a fundamental quantity in solving chemical equilibrium problems.
Many secondary school chemistry textbooks use a dimensionless concentration fraction, which they usually represent with the symbol K. Both the …Translated by
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Atomic construction: Crack the code
Simple exercise about atomic structure and ions that can be used, for example, as a formative test.
The aim is to answer each question with the correct number (number of valence electrons, charge, period...). The sum of these numbers is the atomic …
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Electron microscope: Task
This learning resource contains an assignment about electron microscopes. To better understand the material, your students watch two videos that illustrate the possibilities and operation of electron microscopes.
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PSEmini: Escape the box
Studying chemistry for the first time is like studying a new language. First limit yourself to the basic vocabulary of the language.
That is what PSEmini does: the large periodic table of elements is limited to the first 18 elements and to …
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Response Patterns: Additional Exercises
Extra challenging exercises about reaction patterns in the course material of inorganic compound classes. You will also find an improvement key for these exercises here.
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Acids and acid residues: Bingo game
You can use the bingo sheets to practice the basic acids and associated acid residues in a fun way in the fourth year.
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Using BookWidgets Scientific Calculator: Guide
This is a guide to the BookWidgets scientific calculator. The students initially do not find this a useful calculator because they are not used to working with it and there are quite a few buttons on it that they are not familiar with.
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Electrolysis in a potato: Practical
Use a potato and copper electrodes to perform electrolysis. Copper oxidizes at the anode, water present in the potato reduces at the cathode. You can detect H2 there and observe with an indicator that a base is being formed.
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Temperature control setup: Assignments
These assignments about temperature control are based on a didactic setup . In addition to this downloadable teaching material, a learning path is also available.
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Temperature control setup: Manual
This manual has a step-by-step plan for building a temperature control setup. This didactic material helps students to process the associated assignments or i-exercises .
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Chemical arithmetic: Practical
This document contains the instructions for the students.
I gave each pair a different combination of volume of 1 mol/l sulfuric acid solution and a certain mass of sodium carbonate, some having one in excess and others having the other. The amount …
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