The following experiment shows that matter is made up of particles -Take 50ml water in a beaker.Mark the level of the water in the beaker. Now add some salt in the beaker and stir well with the help of a spoon. Observe the level of water now.Add some more salt and repeat the above procedure.It will be observed that salt disappears after being added to water. However, their is no change in the level of water in the beaker. This observation can be explained if we assume that matter is made up of particles. A chunk of salt consists of numerous salt crystals. These particles becomes dissociated from each other and spread uniformly between the particles of water. Thus,the level of the water in the beaker remains the same. These particles are soo small that we can't see with our naked eyes.Hence, it can be concluded that matter is made up of particles.....

Activity to Show that Matter is Made up of Particles

To demonstrate that matter is composed of particles, we can conduct the following simple experiment:

Materials required:
- A clear glass or plastic container
- Water
- A pinch of salt or sugar
- A spoon or stirrer
- A magnifying glass (optional)

Procedure:
1. Take the clear glass or plastic container and fill it with water, leaving some space at the top.
2. Add a pinch of salt or sugar into the water and stir it gently until it dissolves completely.
3. Observe the solution carefully.

Observations:
1. Upon stirring the solution, the salt or sugar particles will seem to disappear into the water.
2. The solution will appear uniform and transparent to the naked eye.

Explanation:
This activity demonstrates the presence of particles in matter. Even though we cannot see the individual salt or sugar particles with the naked eye, their presence can be inferred based on the changes observed in the solution.

When the salt or sugar is added to the water and stirred, the particles of salt/sugar dissolve in the water due to their small size. The dissolving process occurs at the molecular level, where the water molecules surround and separate the salt/sugar particles, causing them to become dispersed in the water.

The particles in the solution are too small to be seen without magnification. However, if a magnifying glass is used, one may be able to observe the individual particles suspended in the water.

Conclusion:
Through this activity, it becomes evident that matter is composed of particles. The dissolution of salt or sugar in water highlights the presence of tiny particles that constitute matter. This experiment also demonstrates how matter can exist in a dispersed form, where particles are evenly distributed in a solution.