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Note : - Melting of a candle is a physical change , while burning

of a candle is a chemical change .

Iron rust is a formation of a brittle brown layer due to exposure

of iron to a wet air ( oxygen + water ) .

Question on Lesson 4

Complete the following statements :

1. Matter can change from one state to another

by........... Or...........
There are two kinds of changes that occur to matter

2. which are

.....

.....

. Change and........... Change.

The dissolving of sugar in water is

3. a...................... Change.
The..........change is a change in the shape and the

4. . appearance of

Matter.

Melting of ice is considered

5. a........... Change.
The physical change is a change in

6. the.................. of the substance

Without any change in

it's...........
.............And............. Are forms of physical

7. . ... changes

Grinding a quantity of sugar ............ change, while burning

8. is a .. of

sugar is a Change.

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