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Answer 1

Answer:

Answer:1. Solid to Liquid : Ice changes into water.

(Melting)

Reason : when a solid reaches the temperature of it's melting point it starts converting into liquid.

Reason : when a solid reaches the temperature of it's melting point it starts converting into liquid.2. Liquid to Solid : Water changes into ice. (Freezing)

Reason : A liquid turns into a solid when its temperature is lowered to or below its freezing point.

Reason : A liquid turns into a solid when its temperature is lowered to or below its freezing point.3. Liquid to Gas : Water changes into water vapours.

(Evaporation)

Reason : When water reaches its boiling point of 100ºC, water molecules are moving so fast that they break free of the attractions that hold them together in the liquid state.

Reason : When water reaches its boiling point of 100ºC, water molecules are moving so fast that they break free of the attractions that hold them together in the liquid state. 4. Gas to Liquid : Water vapours changes into water.

(Condensation)

Reason : When the water vapor contacts cooler surfaces,it cools and loses energy. The cooler water particles no longer have enough energy to overcome the forces of attraction between them. They come together and form droplets of liquid water.

5. Solid to Gas : Dry ice changes into vapours.

(Sublimation)

Reason : It occurs when the particles of a solid absorb enough energy to completely overcome the force of attraction between them.

6. Gas to Solid : Vapours changes into Dry ice.

(Deposition)

Reason : Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. Deposition is a thermodynamic process. The reverse of deposition is sublimation and hence sometimes deposition is called desublimation.

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