17. List the properties of the particles of matter
18. Why do gases exert pressure ? 19. A gas fills the containing vessel fully. Why?
20. Why does the temperature remain constant during melting of ice?
21. Temperature remain constant during boiling of a liquid. Why?
Answers
Answer:
17. The characteristics of particles of matter are:
All matter is composed of very small particles which can exist independently.
Particles of matter have spaces between them.
Particles of matter are continuously moving.
Particles of matter attract each other.
18. Reason: Gases have a negligible intermolecular force of attraction between the particles of gas. As a result, the random motion of particles in all directions is experiencing in the vessel. Hence, the gas fills the vessel in which it is kept.
A Lustrous Non Metal Is: 1 Atmospheric Press...
Fusion Takes Place When: What Are The Raw ...
20. The extra heat supplied is used in the melting of ice which is called the latent heat of fusion. Similarly, when a liquid starts boiling the temperature of the liquid does not change instead of a continuous supply of heat. ... That's why the temperature of a substance remains constant during its melting or boiling.
21. During the boiling of water the temperature stays constant while heat is supplied continuously. It is because the heat provided by the water particles is consumed, and this heat increases their kinetic energy. ... Therefore, the temperature stays constant only though heat is continually supplied to the water.
Explanation:
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