describe two simple experiments to demonstrate that diffusion occurs in the air and water
Answers
Answer:
For the first simple experiment, you will need a clear container filled with water, food coloring, a darker color such as red is best, and you will need a watch. To start, add a single drop of coloring to the water’s edge in the container and start timing the moment the drop hits the water. Stop timing as soon as the color first reaches the opposite edge of the container. Repeat the procedure after cooling the water in the freezer or heating it up in the microwave or on the stove and compare the results.
Considerations
Make sure that the water stays calm throughout the experiment. For additional variability, you could also use clear liquids other than water, such as vinegar. Use caution when testing other liquids as they may be hazardous, especially when heated or cooled.
Expected Results
At higher temperatures, the water molecules in the container are moving more rapidly, which should cause the food coloring molecules to move more rapidly from one end of the container to the other. The opposite is true when the water is cold.
After some time, crystal of copper sulphate disappears and its particles get equally distributed throughout the water. Results: Molecules of the copper sulphate move from the region of higher concentration, i.e., crystal, to the region of lower concentration, i.e., water, and thus show the phenomenon of diffusion