Phase Changes and Properties of Matter
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Questions and Answers

What is the temperature at which a liquid starts boiling at the atmospheric pressure known as?

its boiling point

What is the bulk phenomenon in which particles from the bulk of the liquid gain enough energy to change into the vapour state?

Boiling

What is the temperature of boiling point of water in Kelvin?

373 K

What is the energy required to change the state of matter from liquid to vapour known as?

<p>latent heat of vaporisation</p> Signup and view all the answers

How can the state of matter be changed into another state?

<p>by changing the temperature</p> Signup and view all the answers

What is the process of changing directly from solid state to gaseous state and vice versa without changing into the liquid state?

<p>Sublimation</p> Signup and view all the answers

What happens to the particles when the pressure is increased or decreased?

<p>The particles come closer or move farther apart</p> Signup and view all the answers

What is observed when camphor is heated slowly in the activity?

<p>Sublimation of camphor</p> Signup and view all the answers

What is the effect of applying pressure on the particles of matter?

<p>Particles of matter can be brought close together</p> Signup and view all the answers

What is the SI unit of temperature?

<p>Kelvin</p> Signup and view all the answers

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