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प्रश्न
Name the three states of matter.
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उत्तर
The three states of matter are solids, liquids, and gases.
Solids: A solid has a definite shape and definite volume.
Example: wood, stone, iron, ice, etc
Liquid: A liquid has a definite volume but no definite shape.
Example: water, juice, milk, oil, etc.
Gases: A gas neither has definite shape nor a definite volume.
Example: air, hydrogen, oxygen, water vapour, etc.
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संबंधित प्रश्न
Water evaporates only at 100°C.
.............. process is just reverse of melting.
Distinguish between solids, liquids, and gases on the basis of their following properties :
(a) compressibility
(b) fluidity
(c) rigidity
(d) expansion on heating
State the general properties of a solid.
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.
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.
Sulphur is a yellow amorphous powder insoluble in water.
Match the characteristics of the three states of matter in List I with their correct answer from List II.
| List I | List II |
| 1. Are highly rigid and have a definite shape | A: Solids and gases only |
| 2. Have no definite shape | B: Solids only |
| 3. Have definite volume but no definite shape | C: Liquids and gases only |
| 4. Are highly compressible and least rigid | D: Gases only |
| 5. Have no definite volume | E: Solid, liquids and gases |
| 6. Have no definite shape and volume |
F: liquids only |
| 7. Occupy space | G: Solids and liquids only |
| 8. Are not compressible | |
| 9. Are slightly compressible | |
| 10. Have mass |
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 |
For removing grains from stalks, the ______ method is used.
