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Question
- Match the following :
Column 1 Column 2
(a) Solids
(i) Can flow in all directions.
(b) Sublimation
(ii) The temperature at which a liquid changes into its gaseous state.
(c) Boiling point
(iii) Can have any number of free surfaces.
(d) Gases
(iv) Gaps between particles.
(e) Intermolecular space
(v) Change of state directly from solid to gas.
- Match the following :
| Column 1 | Column 2 |
|---|---|
(a) Solids |
(i) Can flow in all directions. |
(b) Sublimation |
(ii) The temperature at which a liquid changes into its gaseous state. |
(c) Boiling point |
(iii) Can have any number of free surfaces. |
(d) Gases |
(iv) Gaps between particles. |
(e) Intermolecular space |
(v) Change of state directly from solid to gas. |
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Solution
Explanation:
(a) Solids -(iii) Can have any number of free surfaces.
- As the particles of solid are held firmly with each other.
- This is due to greater intermolecular force of attraction between the particles of solids.
- As a result there are a number of free spaces present in the case of solids.
(b) Sublimation-(v) Change of state directly from solid to gas.
- Sublimation is a process in which a solid substance directly changes into gas or vice versa without coming into the liquid state.
- For example camphor directly changes from a solid-state into the gaseous state without coming into the liquid state.
(c )Boiling point-(ii) The temperature at which a liquid changes into its gaseous state.
- When we supply heat to a liquid substance, the intermolecular force present between them brokes down and thus converts into a vapour state.
- It is the fixed temperature at which a liquid substance changes into a gaseous state at atmospheric pressure.
- For example the boiling point of water is 100°C ( 373K).
(d) Gases-(i) Can flow in all directions.
- Th intermolecular molecular force of attraction present between the gas molecules is very weak.
- due to weak intermolecular forces of attraction, they have a greater amount of freedom.
- As a result gas molecules flow in all directions.
(e) intermolecular space-(iv) Gaps between particles.
- The gaps present between the particles is known as intermolecular space.
- Solids have the least, liquids have moderate whereas gases have larger intermolecular space.
Column A
Column B
(a) Solids (iii) Can have any number of free surfaces. (b) Sublimation (v) Change of state directly from solid to gas (c )Boiling point (ii) The temperature at which a liquid changes into its gaseous state. (d) Gases (i) Can flow in all directions. (e) intermolecular space (iv) Gaps between particles.
Explanation:
(a) Solids -(iii) Can have any number of free surfaces.
- As the particles of solid are held firmly with each other.
- This is due to greater intermolecular force of attraction between the particles of solids.
- As a result there are a number of free spaces present in the case of solids.
(b) Sublimation-(v) Change of state directly from solid to gas.
- Sublimation is a process in which a solid substance directly changes into gas or vice versa without coming into the liquid state.
- For example camphor directly changes from a solid-state into the gaseous state without coming into the liquid state.
(c )Boiling point-(ii) The temperature at which a liquid changes into its gaseous state.
- When we supply heat to a liquid substance, the intermolecular force present between them brokes down and thus converts into a vapour state.
- It is the fixed temperature at which a liquid substance changes into a gaseous state at atmospheric pressure.
- For example the boiling point of water is 100°C ( 373K).
(d) Gases-(i) Can flow in all directions.
- Th intermolecular molecular force of attraction present between the gas molecules is very weak.
- due to weak intermolecular forces of attraction, they have a greater amount of freedom.
- As a result gas molecules flow in all directions.
(e) intermolecular space-(iv) Gaps between particles.
- The gaps present between the particles is known as intermolecular space.
- Solids have the least, liquids have moderate whereas gases have larger intermolecular space.
Column A | Column B |
| (a) Solids | (iii) Can have any number of free surfaces. |
| (b) Sublimation | (v) Change of state directly from solid to gas |
| (c )Boiling point | (ii) The temperature at which a liquid changes into its gaseous state. |
| (d) Gases | (i) Can flow in all directions. |
| (e) intermolecular space | (iv) Gaps between particles. |
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