Physics
Explain the terms vaporization and boiling point.
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Answer
The change from liquid state to gaseous state on heating at a constant temperature by absorption of heat is called vaporization.
The temperature at which a liquid changes into vapour without further increase in temperature is called the boiling point of the liquid.
Example — Water (liquid) at 100°C changes into steam (gas) at 100°C by absorbing heat.
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Related Questions
Explain the terms melting and melting point.
Some ice is taken in a beaker and its temperature is recorded after each one minute. The observations are listed below:
Time (in minute) Temperature (in °C) 0 0 1 0 2 0 3 0 4 0 5 0 6 3.8 7 7.6 8 11.4 From the above observations what conclusion do you draw about the melting point of the ice?
A liquid can change into vapour state
(a) at a fixed temperature and
(b) at all temperatures
Name the processes involved in the two cases.
Describe an experiment to demonstrate that a substance absorbs heat during melting without change in its temperature.