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प्रश्न
Give reason We need to classify things .
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उत्तर
We need to classify things in order to distinguish them. In this way, things can be categorized and can be easily studied.
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संबंधित प्रश्न
Name the terms for the process due to which a solid directly changes into its vapours.
Fill in the blank
Water boils at ______
Write whether the following statement are true or false.
There is no difference between evaporation and boiling.
Write whether the following statement are true or false.
A gas has no free surface.
Define Matter.
Define Molecule.
Write your observation and conclusion for the following:
When one of the balloons suspended to the metre scale is punctured while other remains inflated?
Fill in the blank
Molecules in a ............ are packed very closely.
Multiple choice question.
A kind of matter which can sublime is
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. |
