Advertisements
Advertisements
प्रश्न
Give a reason for the Pure substances have fixed melting or boiling points.
Advertisements
उत्तर
Pure substances consist of only one kind of matter. All the particles of a pure substance are alike. It has a definite composition and similar properties. This is the reason that pure substances have fixed melting or boiling points.
APPEARS IN
संबंधित प्रश्न
Select the correct alternative
The solids are
Explain the change of a solid into a liquid at a constant temperature.
Give reason :
Liquids have a definite volume but no definite shape.
Fill in the blank
When a gas is cooled, its molecules .............. energy.
Write whether the following statement is true or false.
Only water can exist in three different states.
For the following statement, say whether it describes a solid, a liquid, or a gas.
Particles are quite close together.
Multiple choice question.
Gases
One kind of matter can be distinguished from another by its physical properties and chemical properties.
Fill in the blank with the correct word Given below.
From the three states of matter, _____ expand the least.
What are the similarities between a gas and a liquid?
