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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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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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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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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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Qualitative and quantitative analysis of hydrates: Practical
In this practical, it is quantitatively determined how many water molecules bind per salt molecule of a hydrate (for example that of copper sulphate). It is also qualitatively demonstrated that a hydrate has a different color than its …
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Microscopy and chemical identification: Solve the mystery
During this lab, your students will investigate a crime. Three pieces of evidence were found at the scene of the crime. It's about animal hair, soil type and fibers. After a chemical and microscopic examination, the students can determine which …
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Thermochemistry: Theory and exercises
This is a comprehensive course on thermochemistry. Various reactions are discussed that give rise to a heat effect and may or may not be accompanied by a volume change. In addition to the numerous detailed issues, there are many additional …
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Reaction rate and thermodynamics: Practical
This is a simple practical about the factors that influence the reaction rate in the reaction that takes place between chalk and hydrochloric acid. Students can also determine whether this is an endothermic or exothermic reaction.
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Biochemistry: Saccharides and Nutrients - WEZO 5
The following learning resource contains a practice test or task on the theme of saccharides and nutrients.
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Risk analysis: Student practicals with example
The teacher is personally required to perform a risk assessment for each chemical the students use. You can do this easily and quickly in the free program dgbs on hazardous substances.
Each teacher must include this in his lesson preparation in his …
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