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प्रश्न
Give reasons for the following:
Water on freezing turns into ice.
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उत्तर
Every pure substance has a fired melting point or boiling point.
संबंधित प्रश्न
Fill in the blank:
The physical state of a substance, which has a fixed volume but no fixed shape is .........
Write whether the following statement is true or false.
Solids have the largest inter-molecular space.
All kinds of matter
- occupy space and have definite mass
- have mass and definite shape
- can change their states
- have definite volume
The process by which a solid changes into a liquid is called
- freezing
- melting
- condensation
- evaporation
What is mass ?
Fill in the blank.
Water is a matter because it has mass and occupies _______
Describe simple experiment to show that particles of matter are closely packed in solids and less in liquids.
‘Inter-particle attraction between atoms of gases is very weak’. State five properties of gases which correlate as a consequence of the weak inter-particle attraction between particles of gases.
Air is not compressible.
Mr. Raghu returns home on a hot summer day and wants to have buttermilk. Mrs. Raghu has the only curd. What can she do to get buttermilk? Explain
