Advertisements
Advertisements
Question
Give reason Pure substances have fixed melting or boiling point .
Advertisements
Solution
Pure substances consists 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
RELATED QUESTIONS
Under what conditions do solids, liquids and gases change their state.
True or false.
If the container in which a gas is collected has an opening, the gas will flow out and spread itself indefinitely.
Write true or false for each statement. Rewrite the false statement correctly.
Solids can be compressed easily.
Name the phenomenon which causes the Disappearance of camphor is
What do you mean by inter-molecular forces?
What is volume?
Give a reason for the Electricity is not considered matter.
Define Element.
Match the arrangement of atoms in the three states of matter in List I with the correct state in List II.
| List I | List II |
| 1. Arrangement of atoms, very closely packed | A: Solids |
| 2. Interparticle space is maximum | B: Liquids |
| 3. Force of attraction between particles is very weak | C: Gases |
| 4. Movement of particles is about their own position | |
| 5. Particles in the state of matter are slightly compressible and not closely packed. |
Write scientific reasons.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
