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प्रश्न
Give two examples for of the following
Substances which do not change their states.
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उत्तर
Paper, sugar.
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संबंधित प्रश्न
Boiling takes place at all temperatures.
Evaporation takes place at ...............temperature.
Discuss the three states of matter solid, liquids and gas on the basis of molecular model.
Write true or false For the following Statement
The molecules in a substance arc in random motion.
Fill in the blank
In a solid, the molecules ............................................ but they remain at their fixed positions.
Fill in the blank
The inter-molecular forces are the weakest in ...............
Explain the change of a solid into a liquid at a constant temperature.
What happens when a solid is heated?
For the following statement, say whether it describes a solid, a liquid, or a gas.
Particles move about very quickly.
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 |
