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Class 7 Science Solved Q&A

Nutrition in Plants Nutrition in Animals Fibre to Fabric Heat Acids, Bases and Salts Physical and Chemical Changes Weather,Climate And Adaptation Wind Storms and Cyclones Soil Respiration in Organisms Transportation in Animals and Plants Reproduction in Plants Motion and Time Electric Current and its Effect Light Water A Precious Resource Forests: Our Lifeline Waste Water Story

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CBSE Science Class 7

Physical and Chemical Changes

Physical and Chemical Changess - Chapter Wise CBSE Solved Question and Answer Based On NCERT

Points To Remember:

There are two types of changes namely physical and chemical changes
Physical changes refers to the changes in the physical properties of substances
Chemical changes refers to the changes in the chemical properties of substances
No new substances are formed in physical changes
A new substance is formed in chemical changes
Rusting of iron is an example of chemical changes
The process of deposition of a layer of zinc on iron is called galvanisation
Some substances can be obtained in pure state from their solutions by crystallisation

Chapter 6

Physical and Chemical Changes

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