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प्रश्न
Discuss the three states of matter solid, liquids and gas on the basis of molecular model.
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उत्तर
Solids
Here the molecules are very tightly packed that there is no or very less intermolecular space and there is a high intermolecular force of attraction (force of cohesion). The molecules in a solid can only vibrate to and fro about their mean positions. They do not leave their positions.
Liquids
Here the molecules are less tightly packed as compared to solids and also there is a lesser force of intermolecular attraction. The intermolecular distance is greater than that in the solids. Thus, they do not have a definite shape but acquire the shape of the vessel in which they are contained but have a definite volume at a given temperature.
Gases :
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संबंधित प्रश्न
At high altitudes, water boils above 100° C.
Why do solids, liquids, and gases differ in their physical states?
What are the two conditions for the interconversion of states of matter?
Fill in the blank
Any matter which has a definite ................. but no definite shape is called a ...............
Fill in the blank
The temperature at which a liquid boils is called the ................. point of that liquid.
Give two examples for of the following
Substances which do not change their states.
Multiple choice question.
Which of the following is a property of the liquids?
The molecules move only within the boundary of
Give two examples for each type of matter
Match the arrangement of atoms in the three states of matter in List I with the correct state in List II.
| List I | List II |
| 1. Arrangement of atoms is far apart | A: Solids |
| 2. Force of attraction between atoms is very strong | B: Liquids |
| 3. Movement of atoms is in any random direction | C: Gases |
| 4. Particles diffuse very easily | |
| 5. Particles show movement about their own position |
