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condensation

Evaporation, Transpiration and Condensation

Last Updated on November 23, 2020 By Mrs Shilpi Nagpal 1 Comment

Drops of water on outer surface of glass

Question 1 Define the term evaporation? Question 2 How are clouds formed? Question 3 Why do water drops appear on the outer surface of a glass containing ice-cold water? Question 4 What is transpiration? Question 5 We hang our wet clothes out to dry on a rope.What happens to the water in the clothes? Question 6 Give few examples of evaporation in daily … [Read more...] about Evaporation, Transpiration and Condensation

Vapour Pressure

Last Updated on March 20, 2019 By Mrs Shilpi Nagpal Leave a Comment

vapour pressure temperature curves for some liquids

In a liquid, the molecules are quite close together so that there are considerable forces of attraction between them and hence they are held together in a definite volume. The liquids possess fluidity like gases but incompressibility like solid. Properties of Liquid (1) Liquids have no definite shape: They take up the shape of the vessel in which they are put. This is … [Read more...] about Vapour Pressure

Change in state of matter

Last Updated on March 20, 2019 By Mrs Shilpi Nagpal 3 Comments

change in state

Question 1 What are the ways in which physical state of matter can be changed ? Question 2  What is boiling ? Question 3 What is condensation? Question 4 What is freezing? Question 5 What do you mean by inter-conversion of matter? Question 6 What is melting or fusion. Question 7 What does higher melting point indicate ? Question 8 How does a solid changes … [Read more...] about Change in state of matter

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