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Monofunctional compounds: Skeleton notation
Students often wonder what the skeletal notation looks like when functional groups are added to the carbon chain. This is a summary that I made at the request of students.
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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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Measurements of length, area and volume: Conversion tables
Conversion tables for length dimensions, surface dimensions and volume dimensions. Useful for converting units and calculating length, circumference, area, volume, capacity.
The most common units were used. Little-used units such as square decameter …
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Educational videos: Overview document
This document contains several educational videos divided by subject:
- chemistry,
- biology,
- entrance exams,
and by theme. Almost all of the chemistry and biology curriculum for the third grade finality is covered in a Dutch video.
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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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Scientific method: Schema
A diagram of a scientific method. The following steps are taken during the investigation:
- observation,
- research question & hypothesis,
- research or experiment,
- data or analysis,
- conclusion or result.
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World Water Day@school 2024: Educational package
In the context of World Water Day@school on March 22, 2024, Goodplanet and Join For Water developed the educational project: 'Pip a tile and let it penetrate'
Get started with water research with your class. Examine the playground through blue-green …
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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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Fire safety: Assignment bundle
Individual assignment bundle on fire safety: assignments on fire prevention and control, safety and first aid for burns.
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Take a closer look at your region: Inspiration booklet
With this inspiration booklet you put yourself in the shoes of a researcher to discover your own region. With various questions, tips and assignments, De Helix invites you to look at the environment with an open and different view.
The booklet …
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Lab material: Puzzle
This is an exercise on the names of the lab materials.
On this first sheet you see twelve images of objects from the lab, each with a number from 1 to 12. On the next sheet (answer sheet) you see twelve boxes with the names of the material. …
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Faith in young people: Reading assignment and reflection
Questions about the informative text about the World Youth Days in Lisbon from the magazine Don Bosco magazine . There are also questions for reflection on faith and meaning among young people.
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