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प्रश्न
Even two or three crystals of potassium permanganate can impart colour to a very large volume of water. Which characteristic of particles of matter is illustrated by this observation?
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उत्तर
When crystals of potassium permanganate are placed at the bottom of a beaker of water, water in the whole beaker turns pink on its own. This process represents that matter is made up of small particles which diffuse from a region of higher concentration to a region of lower concentration. The phenomenon involved is known as diffusion.
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संबंधित प्रश्न
Why can a piece of chalk be broken easily into smaller pieces while a coal piece cannot be broken easily?
Match the columns.
| (1) iron and gold | (a) molecules are very far apart |
| (2) melting | (b) pure substance |
| (3) intermolecular space | (c) non - metals |
| (4) compound | (d) the space between the molecules |
| (5) gases | (e) change from solid to liquid |
| (f) metals |
Name the phenomenon which cause the following change:
Conversion of water into steam.
A solid is a state of matter that has
- no definite shape.
- large intermolecuiar space.
- high intermolecuiar force of attraction.
- no definite volume.
Define: interconversion of states of matter.
Complete the statement given below by selecting the correct word.
The space between atoms in gases is maximum while in ____ is minimum,
Define the Gas and give two examples.
Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to shape.
In which of the three states of matter – solids, liquids, or gases is the movement of atoms about their own position. Give a reason for the same.
With reference to the liquid state of matter – answer the following
State why the inter-particles attraction decreases to negligible.
