Advertisements
Advertisements
Question
Name the three states of matter and define them.
Advertisements
Solution
There are three states of matter
- Solid State : The molecules are very close to each other hence intermolecular spaces are small and intermolecular force is strong.
Hence solids have definite volume, rigid, retain definite shape and are incompressible.
- Liquids : The molecules are less closely packed have more intermolecular spaces than solid, less stronger forces than solids.
Hence liquids have definite volume but no definite shape. They take the shape of container in which they are put. - Gases: The molecules in the gases are for apart with weakest force of attraction. Hence gases have neither definite volume nor definite shape and compressible.
- Liquids : The molecules are less closely packed have more intermolecular spaces than solid, less stronger forces than solids.
APPEARS IN
RELATED QUESTIONS
Give reasons:
Liquids can flow
Give two example of the following:
The substances which do not change their state on heating.
Fill in the blank:
Liquids have a definite ............
Match the following
| Column A | Column B |
| (a) Solids | (1) Can flow in all directions. |
| (b) Sublimation | (2) The temperature at which a liquid changes into its gaseous state. |
| (c) Boiling point | (3) Any number of free surfaces. |
| (d) Gases | (4) Gaps between particles. |
| (e) Intermolecular space | ro(5) Change of state fm solid to gas. |
Give two examples of the following:
Substances which are rigid and not compressible.
Write whether the following statement are true or false.
Solids have the largest inter-molecular space.
Give reasons for the following:
Water on freezing turns into ice.
A glass beaker is half-filled with water and an empty glass tumbler is inverted & lowered inside the glass beaker. State your observations on tilting the tumbler below the level of the water in the glass beaker. Give a reason for your answer.
A crystal of iodine is placed in a closed flat bottom flask and heated. State how you would conclude from the observations seen, that interparticle space is minimum in solids and maximum in gases.
Fill in the blank:
Particles in a gas possess ___________ kinetic energy.
