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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.
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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.
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संबंधित प्रश्न
Which of the following are matter?
Chair, air, love, smell, hate, almonds, thought, cold, lemon water, smell of perfume.
What are the characteristics of particles of matter?
Define the following term.
Element
Fill in the blank:
Water is a matter because it has mas and occupies....................
Fill in the blank:
Water boils at ............
Fill in the blank:
The physical state of a substance, which has a fixed volume but no fixed shape is .........
Write true or false for statement. Rewrite the false statement correctly.
Solids can be compressed easily.
Give two examples of the following:
Substances which do not change their states.
Match the characteristics of the three states of matter in List I with their correct answer from List II.
| List I | List II |
| 1. Have no definite shape, volume or free surface | A: Solids only |
| 2. Are highly compressible and least rigid | B: Liquids only |
| 3. Have a definite volume, no definite shape and are slightly diffusable | C: Gases only |
| 4. Are not compressible and have no diffusability | D: Liquids and gases only |
| 5. Have mass and occupy space | E: Solids and gases only |
| F: Solids, liquids and gases |
Mr. Raghu returns home on a hot summer day and wants to have buttermilk. Mrs. Raghu has the only curd. What can she do to get buttermilk? Explain
