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Biomass conversion: Practical
The Biomass Conversion lesson series consists of a practical with accompanying questions and assignments.
In the practical, the students see how wood contains cellulose, and they show that cellulose in turn consists of glucose. Students become …
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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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Separation techniques: Corner work
During this corner work, the students experience the different separation techniques. The separation techniques discussed are:
- filter,
- seven,
- centrifugation,
- evaporate,
- extract.
The evaporation laboratory is studied using a video.
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Conductivity: Practical
Four research questions are addressed in this practical.
- How does concentration affect the conductivity of a substance?
- How does temperature affect the conductivity of a substance?
- How does the ionic radius affect the conductivity of a substance? …
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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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Towards an integrated approach to MEAV
This research investigates how the subject MEAV can be approached in an integrated manner. This approach provides more depth, students will make deeper connections and multiple objectives can be achieved at the same time so that more time can be …
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Friendship bread: Home assignment
Update: Herman the friendship bread, prepared as an assignment for home.
Source: Herman the friendship bread: Step-by-step plan by Lien Rönne
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Flame tests with tea light holders
Metal salts dissolved in methanol color beautifully in the flame. These are very simple
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Synthesis of gold colloids from electronic waste
In this article, we discuss the synthesis of starch stabilized gold colloids, starting from gold recovered from electronic waste. The recycled gold was cleaned with concentrated nitric acid and dissolved in aqua regia. After evaporating the acidic …
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