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प्रश्न
Give reasons for the following:
Solids have a definite shape and are highly rigid while gases have to definite shape and are least rigid.
उत्तर
Solids have very closely packed atoms with minimum spaces between them while gases have atoms which are for apart with maximum spaces between them. Solids have a definite shape and are highly rigid while gases have no definite shape and are least rigid.
संबंधित प्रश्न
Fill in the blank:
The change of water vapour into water is called ......................
What is volume ?
Write your observation and conclusion for the following:
When one of the balloons suspended to the metre scale is punctured while other remains inflated ?
Why liquids do not have a definite shape ?
Fill in the blank
Molecules in a ________ are packed very closely.
A piece of chalk can be broken into small particles by hammering but a piece of iron cannot be taken into small particles by hammering. Which characteristic of the particles of matter is illustrated by these observations?
Which one of the following statements is not true?
- the molecules in a solid vibrate about a fixed position
- the molecules in a liquid are arranged in a regular pattern
- the molecules in a gas exert negligibly small forces on each other, except during collisions
- the molecules of a gas occupy all the space available
Define: interconversion of states of matter.
Each of the three states of matter has mass. Explain with the help simple experiments – that each state of matter has mass.
You are provided with a mixture of naphthalene and ammonium chloride by your teacher. Suggest an activity to separate them with well labelled diagram.
