Write the characteristics of particle of matter? describe any two of it with example and activity?
Answers
The characteristics of particles of matter are-...
1.the particles are continuously moving.
2.they have spaces between them.
3.they are very small.
4.they attract each other.
Answer - The characteristics of particles of matter are-...
1.the particles are continuously moving.
2.they have spaces between them.
3.they are very small.
4.they attract each other.
The particles of matter are very, very small:
The very, very small size of particles of matter can be shown by performing the following experiment by using potassium permanganate and water.
Take 2-3 crystals of potassium permanganate and dissolve them in 100 ml of water in a beaker. We will get a deep purple colored solution of potassium permanganate in water.
Take out approximately 10 ml of this solution and put it into 90 ml of clear water in the second beaker. Due to this dilution, the color of the potassium permanganate solution in the second beaker becomes a bit lighter.
Take out 10 ml of this solution and put it into another 90 ml of clear water in the third beaker. The color of the solution will become still lighter.
Keep diluting the solution like this 5 to 8 times.
In this way, we get a very dilute solution of potassium permanganate in water but the water is still colored.
This experiment shows that just a few crystals of potassium permanganate can color a large volume of water.
So we conclude that there must be millions of tiny particles in just one crystal of potassium permanganate, which keeps on dividing themselves into smaller and smaller particles.
The particles of matter have space between them:
The spaces between the particles of matter can be shown by performing the following experiment by using water and sugar.
Take a 100 ml beaker.
Fill half the beaker with water and mark the level of water.
Dissolve some sugar (50gm) with the help of a glass rod.
We will find that the level of sugar solution in the beaker is at the same mark where the water level was initially in the beaker.
When sugar is dissolved in water, its crystals separate into very fine particles. These particles of sugar go into the spaces between the various particles of water due to which there is no change in the volume of water on dissolving sugar in it.
The fact that there is no change in volume on dissolving sugar in the water tells us that there are spaces between the particles of water.
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