Why is an explosion of crackers considered a chemical change?

Important Questions on Physical and Chemical Changes

MEDIUM

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 6 - Physical and Chemical Changes>Exercise>Q 4

Does the change in chemical properties take place during a chemical change?

MEDIUM

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 6 - Physical and Chemical Changes>Exercise>Q 5

Ram and Raheem are best friends. Raheem goes to Ram’s house to celebrate Diwali. Both are burning crackers. Suddenly, a spark falls on Raheem’s arm. Ram immediately washes Raheem’s hand and applies a cream for burns.

Which type of change is the burning of crackers?

EASY

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 6 - Physical and Chemical Changes>Exercise>Q 5

Ram and Raheem are best friends. Raheem goes to Ram’s house to celebrate Diwali. Both are burning crackers. Suddenly, a spark falls on Raheem’s arm. Ram immediately washes Raheem’s hand and applies a cream for burns.

Do you think, burning crackers are good for our environment?

MEDIUM

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 6 - Physical and Chemical Changes>Exercise>Q 5

Ram and Raheem are best friends. Raheem goes to Ram’s house to celebrate Diwali. Both are burning crackers. Suddenly, a spark falls on Raheem’s arm. Ram immediately washes Raheem’s hand and applies a cream for burns.