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प्रश्न
Name the three states of matter and define them.
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उत्तर
The three states of matter are solid, liquid and gaseous.
- Solid State: A solid has a definite shape and a definite volume. Molecules in the solid state are packed very close to each other. Intermolecular space is almost negligible, while the intermolecular force of attraction between the molecules is very strong in solids.
- Liquid State: A liquid has a definite volume but no definite shape. The molecules in the liquid are less closely packed than in solids. The intermolecular space is greater than solids. The molecules have a weaker intermolecular force of attraction; therefore, the liquid molecules have greater movement than solids, and hence, a liquid flows.
- Gaseous state: A gas has neither a definite shape nor a definite volume. The molecules in a gas are far apart. The intermolecular force of attraction between the molecules is very weak, and the intermolecular space is large.
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संबंधित प्रश्न
The temperature of a substance remains unaffected during its change of state.
Discuss the three states of matter solid, liquids and gas on the basis of molecular model.
Fill in the blank
The inter-molecular spacing is .......... in solids ........... in liquids and ............... in gases.
A gas has neither a definite volume nor a definite shape. Describe the molecular model to explain it.
Give a reason for the Liquids can flow easily.
Fill in the blank
Any matter which has a definite ................. but no definite shape is called a ...............
Write whether the following statement is true or false.
The intermolecular force of attraction is the weakest in gases.
Write true or false for the statement. Rewrite the false statement correctly.
If the intermolecular space is more than the intermolecular force will be weaker.
Give two examples for of the following
Substances which are rigid and not compressible.
What are the similarities between a gas and a liquid?
