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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Give Reason Liquids Can Flow Easily

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प्रश्न

Give reason Liquids can flow easily 

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उत्तर

In liquids intermolecular force is weaker than that of solids. So molecules in a liquids can slip over one another and liquids can flow unlike solids.

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अध्याय 1: Matter and Its Composition - Additional questions

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एस पी सिंग Concise Chemistry [English] Class 7 ICSE
अध्याय 1 Matter and Its Composition
Additional questions | Q 21.2

संबंधित प्रश्न

Give reason for the following.

Pure substances have fixed melting or boiling points.


How will you prove by an experiment that solids occupy space ?


Write true or false for statement. Rewrite the false statement correctly.

Solids can be compressed easily.


The state of matter which has no definite shape or volume is called

  1. solid
  2. liquid
  3. gas
  4. water

Give an experiment to explain that there are intermolecular spaces between water molecules.


Fill in the blank

The molecules are at a greater distance in ______ compared to liquids.


Fill in the following blank with suitable words :

The smell of perfume gradually spreads across a room due to .....................


When a beam of sunlight enters a room through a window, we can see tiny particles X suspended in a gas (or rather a mixture of gases) Y which are moving rapidly in a very haphazard manner.

  1. What could particles X be ?
  2. Name the gas (or mixture of gases) Y.
  3. What is the phenomenon exhibited by particles X known as ?
  4. What is causing the movement of particles X ?
  5. What conclusion does the existence of this phenomenon give us about the nature of matter ?

What are the two conditions for the interconversion of states of matter?


A measuring cylinder is filled with water to a particular mark. A piece of solid is immersed inside the measuring cylinder. State why the level of water in the measuring cylinder will rise up. If the solid is removed, what will be the new level of the water in the measuring cylinder? Give a reason for your answer.


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