Explain the process to change state of matter with two examples each
Answers
Answer:
Changes of state are physical changes in matter. They are reversible changes that do not involve changes in matter's chemical makeup or chemical properties. Common changes of state include melting, freezing, sublimation, deposition, condensation, and vaporization.
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VAPORIZATION:(change of liquid to gas): The process of change of liquid into vapor is called vaporization.
Example: When water is heated after reaching at 100°C water starts boiling. At this temperature water turns into vapour. Since, water boils at 100°C, hence 100°C is called the boiling point of water.
Condensation:(change of gas to liquid): The change of vapor into liquid because of decrease in temperature is called condensation. Condensation is the reverse of vaporization. When the temperature of vapor decreases it changes into liquid, this process is known as condensation.
Example : Water vapour will condense on temperatures lower than 100 degree celsius and form liquid water.
Ethyl Alcohol vapours can also condense to form liquids.
MELTING:(CHANGE OF SOLID INTO LIQUID) The change of solid into liquid due to increase in temperature is known as melting.
Example: Ice, which is a solid melts, i.e. changes into water at 0 degree C.
Sugar can also melt at a high temperature.
Sublimation: Change of a solid directly to gas without going through the liquid state is called sublimation
Example: Iodine and Ammonium Chloride will directly for gasses without melting to form liquids.
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