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प्रश्न
Describe a simple experiment to illustrate that molecules are not at rest, but they constantly move.
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उत्तर
Take a beaker. Fill it partly with water. Add some lycopodium powder in the beaker containing water. Stir the contents of the beaker with a glass rod. Take out a few drops of this suspension on a glass plate. Place it on the table and illuminate it with a table lamp. Observe the glass plate through a microscope. It is found that the fine particles of lycopodium powder move rapidly in a random manner and their path is zig zag as shown in the figure below.
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संबंधित प्रश्न
Fill in the blank
_______ can flow.
Write whether the following statement are true or false.
There is no difference between evaporation and boiling.
Give two examples for the following :
Substances that are rigid and not compressible.
The molecules in a substance are in motion. What type of path do they follow?
Name the smallest particle from which matter is made up.
What are molecules?
What are fluids? Give two examples.
Give a reason for the Electricity is not considered matter.
Differentiate between the following:
Atoms and molecules
Write whether the following statement is true or false.
Solids have the largest inter-molecular space.
