Advertisements
Advertisements
प्रश्न
A gas has neither a definite volume nor a definite shape. Describe the molecular model to explain it.
Advertisements
उत्तर
Here the molecules are far apart from each other i.e. have the greatest intermolecular distance which results in the weakest intermolecular forces of attraction. The molecules as are not

bound by any strong force move about freely and thus gases do not have a definite shape and also do not have any definite volume.
APPEARS IN
संबंधित प्रश्न
Ice melts at 100°C.
What is meant by the intermolecular forces of attraction? How do they vary in solids, liquids and gases?
Discuss the three states of matter solid, liquids and gas on the basis of molecular model.
Describe the molecular model for a liquid. I-low does it explain that a liquid has no definite shape, but has a definite Volume?
What do you mean by the change of state of matter?
Explain the change of a solid into a liquid at a constant temperature.
Differentiate between the following:
Liquids and gases
Write whether the following statement is true or false.
The intermolecular force of attraction is the weakest in gases.
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 'X' | A: Condensation |
| 2. Liquid 'Y' to its vapour 'Z' | B: Vaporization |
| 3. 'Z' to 'Y' | C: Melting |
| 4. 'Y' to 'X' | D: Freezing |
| 5. The temperature at which 'Y' changes to 'Z' | E: Melting point |
| F: Boiling point |
Gas like the state of Matter that exists at extremely cold temperatures used in the field of cryogenics.
