matter in our surroundings · fourth state of matter! plasma is known as fourth state of matter. it...
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![Page 1: MATTER IN OUR SURROUNDINGS · Fourth state of matter! Plasma is known as fourth state of matter. It is a mixture of free electrons and ions. Plasma occurs naturally in the star which](https://reader033.vdocuments.net/reader033/viewer/2022060414/5f1220c14f4f6146ca443fb4/html5/thumbnails/1.jpg)
MATTER IN OUR SURROUNDINGS
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RECAPITULATION
What is evaporation?
What are the factors which affects the rate of evaporation?
Why increased surface area make evaporation faster?
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Evaporation cause cooling
A liquid for evaporation takes latent heat of vaporisation from its surroundings and as surroundings lose heat so it leads to cooling.
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Nail polish remover cools the hand!
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Sprinkle water and cool down!
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Water kept in earthen pot cools down. How?
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Desert cooler cools better on a hot dry day!
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Perspiration maintains our body temperature
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Wear cotton clothes in summer.
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Are water vapors present in air?
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Fourth state of matter!Plasma is known as fourth state of matter.
It is a mixture of free electrons and ions.
Plasma occurs naturally in the star which is created due to high temperature .
The fluorescent tubes and neon sign bulbs are also consists of plasma.
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Bose-Einstein CondensateThis is the fifth state of matter for
which calculations were done by Indian scientist S.N Bose in 1920 and based on these calculations Albert Einstein predicted its existence.
It is obtained by cooling a gas of extremely low density to super low temperatures
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HAPPY LEARNING!