Matter in Our Surroundings (Practice Sheet, Class 9)

(1) Radha saw frost on the window in winter. Explain the phenomenon.

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(2)We apply ice or cold water when we get burn on our skin. Why?

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(3)A glass is half filled with water. Identify the different state of matter (including glass).

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(4) Raja is boiling water and put lid on the pot. After some time he find few drops on the lid. Write down the change of state of matter at different stages of work.

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(5) Write the factors affecting evaporisation.

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(6) Rani spread clothes to dry in open. She felt that clothes become dry in summer rather than rainy season. Give reason.

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(7) Write the difference between latent heat of fusion and latent heat of vaporization.

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(8) Write down the differences between sublimation and deposition.

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(9) Convert the following temperatures to the Celsius scale-

(a) 273 K     (b) 500 K

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(10) Identify the state of matter and give reason in sport of your answers.Matter in our surroundings, gas, diagram, NCERT,class 9                                  Matter in our surroundings, solid, diagram, NCERT,class 9

(a)                                                            (b)

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Helping Topics

Matter in our surroundings

NCERT solutions, class 9

Differences between sublimation and deposition

Differences between latent heat of fusion and latent heat of vaporisation

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