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प्रश्न
Differentiate between the following.
Liquids and gases .
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उत्तर
Liquids and gases
| Liquids | Gases |
| Have definite volume but no | Have no definite shape or |
| definite shape | volume |
| Intermolecular force of attraction | Intermolecular force of |
| is weaker than that in solids | attraction is the weakest (almost negligible) |
| Molecules are not as tightly | Intermolecular space is the |
| packed as in solids and intermol | maximum and the |
| ecular space is more than that in solids. | molecules are far apart. |
| Molecules have no fixed position | Molecules move around freely |
| Can be compressed slightly | Can be easily compressed |
| Are capable of flowing | Can flow in all directions. |
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संबंधित प्रश्न
Define: Gas.
Fill in the blank:
The molecules are made up of ________
Classify the following into solid, liquid and gas:
Coal, kerosene, wood, oxygen, sugar, blood, water vapour, milk, wax.
Fill in the blank
Liquids have no definite ______
Describe a simple experiment to illustrate that molecules are not at rest, but they constantly move.
Fill in the blank
The molecules are at a greater distance in ........ compared to liquids.
Write a scientific reason.
Hydrogen is combustible, oxygen helps combustion, but water helps to extinguish fire.
State the correct term from A, B, C, D, E or F in List II which represents the – change of state of matter or its relevant property from List I
| List I | List II |
| 1. Solid 'X' to a liquid 'Y' | A: Liquefaction |
| 2. Liquid 'Y' to its vapour 'Z' | B: Vaporization |
| 3. 'Z' to 'Y' | C: Melting |
| 4. 'Y' to 'X' | D: Solidification |
| 5. The temperature at which 'Y' changes to 'Z' | E: Melting Point |
| F: Boiling point |
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
