Part 2 – Collection of particles during the combustion
Material:
Dry plant material matches or pocket-lighter a fire place a fire resistant vessel for the burning process a vacuum cleaner a larger funnel a piece of white filter paper (as used for example in coffee machines) adhesive tape optionally a microscope
Procedure
The funnel is fixed with the tape on the intake tube of the vacuum cleaner in a way that the run out of the funnel is directed into the pipe. With the help of the tape the filter paper is fixed in the funnel so that the paper covers the hole of the funnel run out.
While the plant material is burning, the funnel is positioned close to the plume from the fire. (Attention, not too close to or over the burning zone.) The emitted air including particles is sucked trough the filter paper by the vacuum cleaner.
After 5 mins of sampling the changes on the filter paper are discussed.
If a microscope is available the clean filter and the filter after sampling can be compared under the microscope.
Result:
The combustion produces solid particles which are suspended in the air.
Interpretation:
Question: Which meaning does this experiment have for the reality?
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