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प्रश्न
Give reason of We can walk through air.
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उत्तर
The molecules of air are far apart i.e. large gaps and we can walk through air easily.
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संबंधित प्रश्न
Give reasons:
Liquids can flow
Fill in the blank:
The temperature at which a liquid starts changing into its vapour state is ______.
Why do solids, liquids and gases differ in their physical states ?
Name the three states of matter and define them.
Match the following
| Column A | Column B |
| (a) Solids | (1) Can flow in all directions. |
| (b) Sublimation | (2) The temperature at which a liquid changes into its gaseous state. |
| (c) Boiling point | (3) Any number of free surfaces. |
| (d) Gases | (4) Gaps between particles. |
| (e) Intermolecular space | ro(5) Change of state fm solid to gas. |
All kinds of matter
- occupy space and have definite mass
- have mass and definite shape
- can change their states
- have definite volume
Bromine particles are almost twice as heavy as chlorine particles. Which gas will diffuse faster; bromine (vapour) or chlorine? Explain your answer.
State in which of the three states of matter:
The movement of the particles is neither about their own positions nor in any random direction.
Fill in the blank:
Particles in a gas possess ___________ kinetic energy.
Mention any two characteristics of the particles of matter.
