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प्रश्न
Name the three states of matter. Give one example of each.
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उत्तर
The three states of matter and their examples are as follows:
- Solid: wood
- Liquid: water
- Gas: air
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संबंधित प्रश्न
Comment upon the following:
rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy and density.
Give reasons:
A gas fills completely the vessel in which it is kept.
Give reasons:
A gas exerts pressure on the walls of the container.
Fill in the following blank with suitable words :
Solid, liquid and gas are the three ........................ of matter.
Fill in the following blank with suitable words :
At room temperature, the forces of attraction between the particles of solid substances are ....................... then those which exist in the gaseous state.
State two characteristic properties of a gas.
Why does a gas exert pressure?
A student placed a gas jar containing air in the upside down position over a gas jar full of red-brown bromine vapours. He observed that the red-brown colour spread upwards into the jar containing air. Based on this observation, the student concluded that it is only the bromine vapour which moves up and diffuses into air in the upper jar, the air from the upper jar does not move down by diffusion into the lower jar containing bromine vapours. Do you agree with this conclusion of the student? Give reason for your answer.
How does the substance of gaseous particles change to a liquid state?
Comment upon the following:-
compressibility
