Advertisements
Advertisements
प्रश्न
Give reason :
When an empty gas jar is inverted over a gas jar containing a coloured gas, the gas also spreads into the empty jar.
Advertisements
उत्तर
This shows that gases can fill up all the space that they get, and they have neither a fixed shape nor a fixed volume. They have no free surfaces, either.
APPEARS IN
संबंधित प्रश्न
Name the terms for the process due to which a solid directly changes into its vapours.
Classify the following into solids, liquids and gases.
Oxygen, milk, common salt, wax, stone, water vapour, carbon-dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.
Fill in the blank
_______ can flow.
Write true or false for each statement. Rewrite the false statement correctly.
Solids and liquids can flow.
For the following statements, say whether it describes a solid, a liquid or a gas.
Particles are quite close together
Gases
Define Molecule.
Give reason :
When a teaspoon of sugar is added to half a glass of water and stirred, the water level in the glass does not rise.
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, very closely packed | A: Solids |
| 2. Interparticle space is maximum | B: Liquids |
| 3. Force of attraction between particles is very weak | C: Gases |
| 4. Movement of particles is about their own position | |
| 5. Particles in the state of matter are slightly compressible and not closely packed. |
Write scientific reasons.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
