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प्रश्न
Fill in the blank
When a gas is cooled, its molecules ________ energy,
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उत्तर
When a gas is cooled, its molecules loose energy,
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संबंधित प्रश्न
Give two example of the following:
The substances which sublime.
Write whether the following statement is true or false.
Only water can exist in three different states.
Write whether the following statement is true or false.
A gas has no free surface.
Give two examples of the following:
Substances which do not change their states.
Give an experiment to explain that there are intermolecular spaces between water molecules.
Write whether the following statement are true or false.
Intermolecular force of attraction is greater in gases than in liquids.
A crystal of iodine is placed in a closed flat bottom flask and heated. State how you would conclude from the observations seen, that interparticle space is minimum in solids and maximum in gases.
With reference to the liquid state of matter – answer the following
How does the stored energy, have an effect on inter-particles space.
Give the reason for the following
Particles of matter move more rapidly on the application of heat.
Match the following.
| Property | Example |
| Breaks easily (Brittle) | Metal pan |
| Bends readily | Rubber band |
| Can be stretched easily | Cotton wool |
| Gets compressed easily | Mud pot |
| Gets heated readily | Plastic wire |
