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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
A diver is able to cut through water in a swimming pool. Which property of matter does this observation show?
Fill in the blank:
The process in which a solid directly changes into a gas is called ....................
How will you prove by an experiment that solids occupy space ?
Write true or false for statement. Rewrite the false statement correctly.
Solids and liquids can flow.
Give reason of A gas fills up the space available to it.
Fill in the blank
The physical state of a substance, which has a fixed volume but no fixed shape is _______
There are large intermolecular gaps in
On what basis are the three states classified of matter.
Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to shape.
Match the characteristics of the three states of matter in List I with their correct answer from List II.
| List I | List II |
| 1. Have no definite shape, volume or free surface | A: Solids only |
| 2. Are highly compressible and least rigid | B: Liquids only |
| 3. Have a definite volume, no definite shape and are slightly diffusable | C: Gases only |
| 4. Are not compressible and have no diffusability | D: Liquids and gases only |
| 5. Have mass and occupy space | E: Solids and gases only |
| F: Solids, liquids and gases |
