SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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liquid
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vapor
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volume
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oxgyen
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Detailed explanation-1: -A substance is in liquid state at room temperature and changes into gaseous state upon heating. This gaseous state is known as vapours.
Detailed explanation-2: -Water vaporThe distinction between a gas and a vapor is subtle: the term vapor refers to the gaseous form of a substance that is a liquid or a solid under normal conditions (25°C, 1.0 atm).
Detailed explanation-3: -The gas state of a substance that is normally a solid or a liquid at room temperature is called vapor. For example water is normally a liquid at room temperature.
Detailed explanation-4: -Vapor refers to a gas phase at a temperature where the same substance can also exist in the liquid or solid state, below the critical temperature of the substance. (For example, water has a critical temperature of 374 °C (647 K), which is the highest temperature at which liquid water can exist.)
Detailed explanation-5: -There are 11 elements which are in gaseous state at room temperature. They are Hydrogen, Helium, Neon, Argon, Krypton, Xenon, Radon, Fluorine, Chlorine, nitrogen and oxygen.