CBSE · Class 7 · ScienceChapter 5NCERT

CBSE Sample Paper for Class 7 Science — Physical and Chemical Changes

Distinguishing physical from chemical changes; everyday examples.

Free AI-powered sample paper for NCERT Science, Class 7, Chapter 5.

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Indian context — what this NCERT chapter centres on

Class 7 Science Chapter 5 (Physical and Chemical Changes) is taught through these India-specific anchors in the NCERT textbook. The sample paper above is pre-loaded with these so the output reflects the way the chapter is actually taught in Indian classrooms.

Preparation of curd from milk
Rusting of iron in coastal areas
Cooking of food (e.g., making chapatis)
Burning of crackers during Diwali

Key terms — Class 7 Science (Physical and Chemical Changes)

PHYSICAL CHANGECHEMICAL CHANGEREVERSIBLEIRREVERSIBLEEXOTHERMICENDOTHERMIC

Teaching tips for Physical and Chemical Changes

1Conduct a simple experiment to demonstrate rusting using iron nails and water, discussing its relevance in coastal regions of India.
2Use local examples like the preparation of traditional sweets to illustrate chemical changes.
3Encourage students to observe and report physical and chemical changes in their daily lives, such as during festivals or cooking.
4Incorporate discussions on the impact of chemical changes in agriculture, such as fertilizers and pesticides used in Indian farming.

Board exam relevance

Questions may include MCQs on definitions, short answer questions on identifying changes, and 5-mark long answer questions requiring explanations of examples from everyday life.