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Cosmography: Stars
This digital exercise will help you learn more about stars. While completing the multiple choice questions and fill-in exercises you will learn more about:
- characteristics;
- spectral class;
- star formation;
- end of light stars;
- end of stars like the …
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Rubber
This exercise will include:
- production,
- applications,
- additives,
- rubber allergy,
- natural rubber
- synthetic rubber,
- risk explanation.
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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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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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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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