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4. The process by which solid changes into liquid is called _____________.
a. melting b. freezing

c. evaporation d. condensation

B. Fill in the blanks.

1. The process by which a liquid changes into a solid on cooling is called _____________.
2. The process by which a liquid changes into gaseous form on heating is called
_____________.

3. The process by which gas changes into a liquid on cooling is called _____________.

4. The solid which dissolves in the liquid is called _____________.
5. _____________ have no fixed shape but have fixed volume.

6. Matter exists in _____________ states.
7. The liquid obtained after dissolving a solute in a solvent is called _____________.

8. The particles cannot move _____________ in solids.

C. State whether the following statements are true or false:

1. Solids cannot flow. ______
2. Liquids do not have fixed volume. ______

3. Gases can flow in all directions. ______

4. The particles are not packed closely to each other in solids. ______

D. Short Answer Questions:

1. What is matter?
2. What is a solid?

3. How does a solute dissolve in a solvent?

4. What is condensation?
5. What is freezing?

6. Write any three properties of gas.

E. Fill in the three boxes to show the arrangement of molecules in:

Solid Liquid Gas

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