Question

explain with activity matter is made up of particles?

Answer 1

For a long time, two schools of thought prevailed regarding the nature of matter. One school believed matter to be continuous like a block of wood, whereas, the other thought that matter was made up of particles like sand. Let us perform an activity to decide about the nature of matter – is it continuous or particulate?
Activity ______________ 1.1
Take a 100 mL beaker.
Fill half the beaker with water and mark the level of water.
Dissolve some salt/ sugar with the help of a glass rod.
Observe any change in water level.
What do you think has happened to the salt?
Where does it disappear?
Does the level of water change?
In order to answer these questions we need to use the idea that matter is made up of particles. What was there in the spoon, salt or sugar, has now spread throughout water. See figure .

Answer 2

Hi,

Thanks for asking this question.

Here is the required answer:-

All forms of matter is made up of very small particles which can not be seen by naked eyes.
Activity: We have to take two or three crystals of Potassium Permanganate. We have to add them in 100ml of water. We will observe that the colour of water changes. Now we have to take 10ml of this solution and add it to 100ml of fresh water. Now we will observe that the colour of water will change again but it would less dark as compared to first case. Now, we must repeat this process three or more times until we observe that the colour of water gets fainter and fainter as we repeat the process.

This clearly proves that the matter is made up of many tiny particles.

Here, when we mixed crystals of Potassium Permanganate with water again and again, the colour of water changed always. This shows that the matter, i.e. Potassium Permanganate, is made up of many tiny particles which always gets mixed with water.


Hope it helped.