Advertisements
Advertisements
प्रश्न
Distinguish between the three states of matter—solid, liquid, and gas on the basis of their molecular models
Advertisements
उत्तर
Solids:
Here the molecules are very tighty packed that there is no or very less inteimolecular space and there is high intermolecular force of attraction (force of cohesion).
The molecules do not move about their mean position and thus solids have a definite shape and volume.
Liquids:
Here the molecules are less tightly packed as compared to solids and also there is lesser force of intermolecular attraction. The intermolecular distance is greater than that in the solids. Thus, they donot 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:
Here the molecules are far apart from each other i.e. have the greatest intermolecular distance which result into 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
Write true or false for the following statement
The liquids are less viscous than the gases.
Fill in the blank
The inter-molecular spacing is .......... in solids ........... in liquids and ............... in gases.
Give a reason for the Gases can be compressed easily.
Fill in the blank
......... can flow.
Write whether the following statement is true or false
All solids, on heating, first change to the liquid and then to the gaseous state always.
Fill in the blanks:
Water is a matter because it has ______ and occupies ______.
One kind of matter can be distinguished from another by its physical properties and chemical properties.
State what would you observe if
(a) sugar is added to pebbles take in a plastic beaker
(b) sand is added to glass balls in a beaker. What would you conclude from this imaginative demonstration?
State the property of the following substance.
Hydrogen sulphide gas has a strong rotten egg odour.
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 |
