Interconvertibility of the States of Matter

Concept Explanation

Interconvertibility of the States of Matter

Interconvertibility of the States of Matter:

All the three states of matter are interconvertible i.e. matter can be changed from one state to another.For example: ordinary water. When water is cooled at 0°C, it is transformed into ice (solid). Heated to 100°C, it begins to boil and goes into the gaseous state (vapours). On cooling, water vapour gradually passes into the liquid state and finally to the solid state (ice).

Explanation:

Heating increases kinetic energy of the particles of the solid (ice). As a result, the vibration of the particles about their mean position of rest is also enhanced. The heat energy which is supplied is consumed in overcoming the intermolecular forces of attraction between the particles. The particles now move freely with increased speeds. This results in melting of ice.

The temperature at which solid goes into liquid state at atmospheric pressure is known as melting point of solid. The melting point of ice is 0°C (or 273.15 K). The conversion of a solid into liquid is called fusion of the solid. The heat supplied to the ice does not increase its temperature as the heat is used to overcome the intermolecular forces of attraction between the particles. This heat, thus, remains stored in the contents of the beaker and is called the latent heat of fusion.

The amount of heat energy absorbed when 1kg of a substance changes from solid to liquid at its melting point is called latent heat of fusion of the solid. On further heating, the particles of the liquid gain more energy and begin to vibrate more vigorously. They become so energetic that they break the intermolecular forces of attraction. They are now free to leave the liquid and go into the gaseous state. The liquid then begins to boil. The temperature at which a liquid is converted into gas or vapour is known as the boiling point of the liquid.

At normal pressure (1 atm) the boiling point of water is 100°C (373.15 K). During boiling, the temperature of a liquid does not rise despite heating. Instead, the supplied heat energy goes to raise the kinetic energy of the particles. When the particles acquire enough energy, they overcome the attractive forces of other particles and go into vapour state. As the heat energy received by the liquid remains hidden inside the bulk of liquid, it is called the latent heat of vaporization.

The amount of heat energy absorbed when 1kg of a substance changes from liquid to vapour at its boiling point is called latent heat of vaporization of liquid. On cooling, reverse process occurs i.e. gas or vapour when cooled is converted into liquid. The process by which the change in state from gaseous to liquid takes place is called condensation or liquefaction. When the liquid is further cooled, it is transformed into solid.

The temperature at which the change in state from liquid to solid takes place is called the freezing point of the liquid and the process by which such a change takes place is called freezing.

Sample Questions

(More Questions for each concept available in Login)

Question : 1

______________________ is change from solid to gaseous state without going through a liquid state.
A. Melting	B. Boiling	C. Evaporation	D. Sublimation
Right Option : D
View Explanation

Question : 2

Which of the following processes is known as fusion?
A. Change of liquid to solid	B. Change of solid to liquid	C. Change of liquid to vapour	D. Change of gaseous state to solid state
Right Option : B
View Explanation

Question : 3

The states of matter are __________________
A. Very difficult to understand	B. Non - convertible	C. Interconvertible	D. None of these
Right Option : C
View Explanation

Video Link - Have a look !!!

Language - English

Students / Parents Reviews [20]

Being a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from m...

Prisha Gupta

8th

Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.

Om Umang

10th

When I have not joined Abhyas Academy, my skills of solving maths problems were not clear. But, after joining it, my skills have been developed and my concepts of science and SST are very well. I a...

Sharandeep Singh

7th

Abhyas is good institution and a innovative institute also. It is a good platform of beginners.Due to Abhyas,he has got knoweledge about reasoning and confidence.My son has improved his vocabulary ...

Manish Kumar

10th

In terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...

Aman Kumar Shrivastava

10th

The experience was nice. I studied here for three years and saw a tremendous change in myself. I started liking subjects like English and SST which earlier I ran from. Extra knowledge gave me confi...

Aman Kumar Shrivastava

10th

Abhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are v...

Abhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...

Shreya Shrivastava

8th

My experience with Abhyas academy is very nice or it can be said wonderful. I have been studying here from seven class. I have been completing my journey of three years. I am tinking that I should ...

Hridey Preet

9th

Third consective year,my ward is in Abhyas with nice experience of admin and transport support.Educational standard of the institute recumbent at satisfactory level. One thing would live to bring in notice that last year study books was distributed after half of the session was over,though study ...

Ayan Ghosh

8th

Abhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.