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प्रश्न
What happens when a solid is heated ?
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उत्तर
When a solid is heated, its molecules gain energy and vibrate faster. A stage comes when they overcome intermolecular force of attraction and start moving from each other. This results in melting of solid.
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संबंधित प्रश्न
Write true or false for statement. Rewrite the false statement correctly.
Solids and liquids can flow.
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. |
A substance which can change its state
- wood
- oxygen
- paper
- cloth
The process by which a solid changes into a liquid is called
- freezing
- melting
- condensation
- evaporation
Why liquids do not have a definite shape ?
When sugar is dissolved in water, there is no increase in the volume. Which characteristic of matter is illustrated by this observation?
Explain why, we can easily move our hand in air but to do the same through a plank of wood, we need a karate expert.
Give reasons for the following:
Solids have a definite shape and are highly rigid while gases have to definite shape and are least rigid.
In which of the three states of matter – solids, liquids, or gases is the movement of atoms about their own position. Give a reason for the same.
Select the correct answer from A, B, C, D & E for the statement given below:
The state of matter, where the inter-particle attraction between particles is maximum.
