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प्रश्न
How will you prove by an experiment that solids occupy space ?
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उत्तर
Experiment to show that solids occupy space :
Take a glass bowl. Place a glass tumbler full of water in it. Now tie a stone with thread and lower into the water. Some water flows out of tumbler into bowl. When we remove stone from tumbler the level of water in tumbler comes down. This shows that solids occupy space.
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संबंधित प्रश्न
Give reasons:
Liquids can flow
What is volume ?
Write your observation and conclusion for the following.
When a small stone is gently dipped into a glass filled with water.
Write whether the following statement is true or false.
Solids have the largest inter-molecular space.
Gases
- cannot be compressed easily,
- occupy the entire space of the container.
- have definite shapes.
- cannot flow.
Write whether the following statement are true or false.
Intermolecular force of attraction is greater in gases than in liquids.
Write true or false for each statement. Rewrite the false statement correctly.
If the intermolecular space is more than the intermolecular force will be weaker.
Fill in the following blank with suitable words :
The smell of perfume gradually spreads across a room due to .....................
Explain the following :
When an incense stick is lighted in the corner of a room, its fragrance spreads quickly in the entire room.
Which one of the following statements is not true?
- the molecules in a solid vibrate about a fixed position
- the molecules in a liquid are arranged in a regular pattern
- the molecules in a gas exert negligibly small forces on each other, except during collisions
- the molecules of a gas occupy all the space available
