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प्रश्न
Explain the term ‘interconversion of matter’ with ice as a starting material.
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उत्तर
The phenomenon of change from one state to the other and then back to the original state without any change in its chemical composition is called ‘interconversion of matter.’
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संबंधित प्रश्न
Which of the following are matter?
Chair, air, love, smell, hate, almonds, thought, cold, lemon water, smell of perfume.
Fill in the blank:
The temperature at which a liquid starts changing into its vapour state is ______.
What are fluids ? Give two examples.
Match the columns.
| (1) iron and gold | (a) molecules are very far apart |
| (2) melting | (b) pure substance |
| (3) intermolecular space | (c) non - metals |
| (4) compound | (d) the space between the molecules |
| (5) gases | (e) change from solid to liquid |
| (f) metals |
All kinds of matter
- occupy space and have definite mass
- have mass and definite shape
- can change their states
- have definite volume
Give reason:
A drop of ink added to water in a glass turns whole water blue.
Even two or three crystals of potassium permanganate can impart colour to a very large volume of water. Which characteristic of particles of matter is illustrated by this observation?
Give reasons for the following:
Water on freezing turns into ice.
Give reasons for the following:
A bottle of perfume on opening evolves an odour which can be sensed over a long distance.
Fill in the blank:
Particles in a gas possess ___________ kinetic energy.
