Chapter: Changes Around Us (Worksheet)
CBSE Class 6 - Science
Fill in the blanks
1. Metals generally __________ on heating.
2. A change in which new substance is formed is called __________ change.
3. A black material used by road construction workers for repairing a road is __________ .
4. A change may occur by __________ a substance or by mixing it with some other.
5. Changing state from solid to liquid to gas and back again is a ___________ change.
6. If we bake the roti on a Tawa, we cannot change the baked roti into the ball of dough again. So, baking a roti is an ____________ change.
7. Burning of incense stick is an _________ change.
8. Mixing substances always causes a reversible change. State True or False?
9. Melting is an example of a reversible change. State True or False?
10. Growing of trees is an irreversible change. State True or False?
Answers:
1: expand
2: chemical
3: coal tar
4: heating
5: reversible
6: irreversible
7: chemical
8: False. It can cause an irreversible change.
9: True
10: True
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