Tabulate the differences in the characteristics of states of matter. - Science


Tabulate the differences in the characteristics of states of matter.



Sr. No Solid state Liquid state Gaseous state
1. Definite shape and volume. No definite shape. Liquids attain the shape of the vessel in which they are kept. Gases have neither a definite shape nor a definite volume.
2. Incompressible Compressible to a small extent. Highly compressible
3. There is little space between the particles of a solid. These particles have a greater space between them. The space between gas particles is the greatest.
4. These particles attract each other very strongly. The force of attraction between liquid particles is less than solid particles. The force of attraction is least between gaseous particles.
5. Particles of solid cannot move freely. These particles move freely. Gaseous particles are in a continuous, random motion.
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Chapter 1: Matter in Our Surroundings - Intext Questions [Page 6]


NCERT Science Class 9
Chapter 1 Matter in Our Surroundings
Intext Questions | Q 2.1 | Page 6


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 chimney, honey, water, chalk, cotton, and iron.

Give reason for the following observation. Naphthalene balls disappear with time without leaving any solid.

Give reason for the following observation. We can get the smell of perfume sitting several metres away.

Which of the following diffuses fastest and which the slowest?
Solid, Liquid, Gas Give reasons for your answer.

Give one example of diffusion of gases in a liquid.

Explain how, the smell of food being cooked in the kitchen reaches us even from a considerable distance.

Explain why, diffusion occurs more quickly in a gas than in a liquid.

Why do gases not have fixed shape?

The space between ______ particles is the greatest one.

______ is not affected by gravity.

How does the substance of gaseous particles change to a liquid state?

Comment upon the following:-


Comment upon the following:- 


Comment upon the following:-

kinetic energy

Which of the following is false for gases?

Explain why?

  1. A gas fills a vessel completely?
  2. Camphor disappears without leaving any residue.

Which of the following is TRUE about gaseous state?

Fig. I Fig. II

In figure-I, an air column of length ℓ1 is entrapped by a column of Hg of length 8 cm. In figure-II length of same air column at the same temperature is ℓ2. The `ℓ_1/ℓ_2` is:
(1 atm = 76 cm of Hg)

2 litre He gas at 2 atm and 300 K is inserted into a 4 litre rigid container containing N2 at 600 K and 4 atm. Finally mixture is maintained at 600 K temperature. The final pressure of gaseous mixture would be ______ torr.

Two gases A and B having molecular weights 60 and 45 respectively are enclosed in a vessel. The wt. of A is 0.50 g and that of B is 0.2 g. The total pressure of the mixture is 750 mm. The partial pressure of the gases B is ______ mm Hg.

A gaseous mixture of He and O2 is found to have a density of 0.518 gL-1 at 25° C and 720 torr. The mass percent of helium in this mixture is ______.


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