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Setting up reaction equations: Guided practice
Do you have difficulties drawing up chemical reaction equations? These guided exercises will help you arrive at the correct reaction equation quickly and easily.
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Drawing up a reaction equation: Tips
Difficulties with formulating reaction equations? These tips will help you or your students to prepare reaction equations easily and correctly. A separate video has been developed for the exercises.
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Reaction patterns between inorganic substance classes
Reaction patterns or coherence between the inorganic substance classes: an overview of the different reactions that can take place between the inorganic substance classes. In this lesson we will discuss the five basic reactions:
- metal + oxygen gas …
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Precipitation reactions: Theory and detailed exercises
A video about the basic chemical principles behind precipitation reactions and explanations of exercises with precipitation reactions.
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Sign of sine, cosine and tangent: Exercises
Exercises on the sign of sine, cosine or tangent (positive, negative, 0, 1 or -1).
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Sine, cosine and tangent in a right triangle: Exercise
Exercises on the sine, cosine and tangent in a right triangle.
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Derive fraction from figure
The figures are divided into boxes and partly colored. The number of colored boxes must be expressed as a fraction.
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Lesson questions: Worksheet
Exercises and presentation to repeat the question sentence. Both closed questions and question word questions.
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Statistical research: ICT exercise
Online exercise in which students perform statistical processing of a small study. The students learn in Excel:
- typing a data table;
- generate formulas (mean, median, minimum and maximum);
- enter a formula yourself (variation width);
- draw up a …
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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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Similar Triangles: Exercises
These BookWidgets cover exercises on similar figures, the similarity factor and calculating a missing side.
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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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