EASY
7th Tamil Nadu Board
IMPORTANT
Earn 100

Look at the following list. Identify the physical and chemical changes and fill in the given table.

(rusting of iron, digestion of food, boiling egg, rotting banana, mixing sand and water, chopping wood, crushing a can, mixtures of different coloured buttons, burning of wood).

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Important Questions on Changes Around Us

MEDIUM
7th Tamil Nadu Board
IMPORTANT
When food gets spoiled, it produces a foul smell. Shall we call this change as a chemical change?
MEDIUM
7th Tamil Nadu Board
IMPORTANT
You know that plant produce their food by a process called photosynthesis. Can we call photosynthesis a chemical change?
EASY
7th Tamil Nadu Board
IMPORTANT
What types of clothes are worn in winter?
EASY
7th Tamil Nadu Board
IMPORTANT
What are the clothes that we wear in summer?
EASY
7th Tamil Nadu Board
IMPORTANT
When a woolen yarn is knitted to get a sweater, the change can be classified as _____ .
MEDIUM
7th Tamil Nadu Board
IMPORTANT
_____ of the following are endothermic changes.
EASY
7th Tamil Nadu Board
IMPORTANT
The chemical change is _____.
EASY
7th Tamil Nadu Board
IMPORTANT
_____ is an example of a periodic change.