What are the characteristics of the particles of matter?

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Chapter 1 NCERT Class 9 Science SOLUTIONS

4. What are the characteristics of the particles of matter?

Question:

What are the characteristics of the particles of matter?

Answer:

Following are the characteristics of the particles of matter:

(i) Particles of matter are continuously moving.

(ii) Particles of matter have space between them.

(iii) Particles of matter attract each other.

More NCERT Questions

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(All Q's of this Chapter solved)

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Name A, B, C, D E and F in the following diagram showing change in its state.

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Arrange the following matters according to increase of force between their particles. (a) Water (b) Sugar (c) oxygen

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Convert the following temperatures into Kelvin Unit. (a) 25°C (b) 373°C

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Convert the following temperatures into celsius unit— (a) 293K (b) 470K

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Suggest a method to liquify atmospheric gases.

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For any substance, why does the temperature remain. Constant during the change of state ?

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What is the physical state of water at : (a) 250ºC (b) 100ºC

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Convert the following temperature to celsius scale : (a) 300 K (b) 573 K

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Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out Why?

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Give reasons : (a) A gas fills completely the vessel in which it is kept. (b) A gas exerts pressure on the walls of the container. (c) A wooden table should be called a solid. (d) We can easily move our hand in air but to do the same through a solid block of wood we need a karate expert.

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Tabulate the differences in the characteristics of states of matter. (b) Comment upon the following: Rigidity, Compressibility, fluidity, filling a gas container, shape, kinetic energy and density.

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The mass per unit volume of a substance is called density (density = mass/ volume). Arrange the following in order of increasing density-air, exhaust from chaimnays, honey, water, chalk, cotton and iron.

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A diver is able to cut through water in a swimming pool. Which property of matter does this observation show ?

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The smell of hot sizzling foods reaches your several metres away, but to get the smell from cold, food, you have to go to close.

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Which of the following are matters ? Chair, air, affection, smell, hate, almond, thoughts, cold, cold drink, fragrance of perfume.

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