Advertisements
Advertisements
प्रश्न
Give reason:
A drop of ink added to water in a glass turns whole water blue.
Advertisements
उत्तर
This is because tfie water as well as ink particles (molecules) are in continuous random motion. Due to motion, the blue coloured particles of the ink spreads all over and give blue colour to the water.
APPEARS IN
संबंधित प्रश्न
Why do solids, liquids and gases differ in their physical states ?
Define the following terms.
Atom
Fill in the blank:
The physical state of a substance, which has a fixed volume but no fixed shape is .........
If an object weighs 6 N on earth what will be its weight on moon. What will be the change in its mass?
Fill in the blank :
Air is a matter because it has ________ and _______ and it can be _________
Give reason
A red ink drop added to small amount of water in a glass turns water red in some time.
Define: interconversion of states of matter.
Give a reason why –
Solids have a definite volume & a definite shape.
Fill in the blank:
Particles in a gas possess ___________ kinetic energy.
Match the following.
| Property | Example |
| Breaks easily (Brittle) | Metal pan |
| Bends readily | Rubber band |
| Can be stretched easily | Cotton wool |
| Gets compressed easily | Mud pot |
| Gets heated readily | Plastic wire |
