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प्रश्न
Give reasons for the following:
Water on freezing turns into ice.
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उत्तर
Every pure substance has a fired melting point or boiling point.
संबंधित प्रश्न
Give reasons for the following observation:
The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close.
Why do solids, liquids and gases differ in their physical states ?
Define the following terms.
Atom
For the following statement, say whether it describe a solid, a liquid or a gas.
Particles are quite close together.
A substance which can change its state
- wood
- oxygen
- paper
- cloth
What is volume ?
Why liquids do not have a definite shape ?
Name the three states of matter and define them.
When sugar is dissolved in water, there is no increase in the volume. Which characteristic of matter is illustrated by this observation?
Complete the statement given below by selecting the correct word.
The space between atoms in gases is maximum while in ____ is minimum,
