What are the uses of leaf chromatography
Material for grades 5 - 6
This experiment consists of two parts. In the first part, a burning piece of paper is successfully extinguished with water. In the second part, the same method of extinguishing a gasoline fire is used, but the fire continues to burn.
This experiment illustrates the fact that fire burns only with oxygen and that there are other gases that suffocate the fire. It follows on from the V1 experiment.
This experiment illustrates the fact that fire only burns in contact with air. It follows on from experiment V1 and offers an alternative to experiment V2.
This experiment shows in an impressive way how dangerous an attempt to extinguish a grease fire with water can end.
With this experiment, every student can safely understand the principle of a carbon dioxide fire extinguisher with home remedies.
In this experiment, the pupils can explore the principle of the fire triangle themselves in a simple, safe way.
The worksheet covers the basic principles of fire fighting. The topics of flammability, fire and candles are assumed, as well as knowledge of the fire triangle and the basics of handling the Bunsen burner, for which the preceding topics are suitable.
The fire fighting lesson for grades 5 & 6 contains four teacher experiments and two student experiments. The student experiments deal with solid and gas fires and the safe extinguishing with the help of the fire triangle, which was dealt with in a previous lesson. The teacher's experiments deal with liquid and grease fires and not only show successful extinguishing attempts, but also show in an impressive way what can happen if the fire class is misjudged or ignored.
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