State two examples of periodic changes.

Important Questions on Changes Around Us

EASY

7th Tamil Nadu Board

IMPORTANT

Tamil Nadu Board Class 7 Science Term 2>Chapter 3 - Changes Around Us>Evaluation>Q VII

Mention any two exothermic reactions.

EASY

7th Tamil Nadu Board

IMPORTANT

Tamil Nadu Board Class 7 Science Term 2>Chapter 3 - Changes Around Us>Evaluation>Q VII

Cold milk is heated and it becomes hot. Which type of change it is?

EASY

7th Tamil Nadu Board

IMPORTANT

Tamil Nadu Board Class 7 Science Term 2>Chapter 3 - Changes Around Us>Evaluation>Q VII

What type of change is the artificial ripening of fruit?

EASY

7th Tamil Nadu Board

IMPORTANT

Tamil Nadu Board Class 7 Science Term 2>Chapter 3 - Changes Around Us>Evaluation>Q VII

What type of change is the colouring of a paper?

EASY

7th Tamil Nadu Board

IMPORTANT

Tamil Nadu Board Class 7 Science Term 2>Chapter 3 - Changes Around Us>Evaluation>Q VII

Growing of nails is a periodic change. Why?

MEDIUM

7th Tamil Nadu Board

IMPORTANT

Tamil Nadu Board Class 7 Science Term 2>Chapter 3 - Changes Around Us>Evaluation>Q VII

What type of energy changes is associated when ice melts?

MEDIUM

7th Tamil Nadu Board

IMPORTANT

Tamil Nadu Board Class 7 Science Term 2>Chapter 3 - Changes Around Us>Evaluation>Q VIII

Distinguish physical and chemical changes.

MEDIUM

7th Tamil Nadu Board

IMPORTANT

Tamil Nadu Board Class 7 Science Term 2>Chapter 3 - Changes Around Us>Evaluation>Q VIII

How can a change occur in a substance?