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प्रश्न
Give reasons for the following:
Water on freezing turns into ice.
उत्तर
Every pure substance has a fired melting point or boiling point.
संबंधित प्रश्न
Give reasons:
A gas can fill the whole vessel in which it is enclosed.
Give reasons:
Solids cannot be compressed.
Define the following terms.
Atom
Name the phenomenon which cause the following change:
Disappearance of camphor.
The state of matter which has no definite shape or volume is called
- solid
- liquid
- gas
- water
Give reason Electricity is not considered matter .
Fill in the blank.
Water is a matter because it has mass and occupies _______
Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to mass
State the term which refers to the conversion of a substance on heating from.
- solid-state to liquid state
- liquid state to vapour state
- vapour state to liquid state
- liquid state to solid-state.
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.
